Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst
Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were c...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Park, Jung Eun [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2014transfer abstract |
|---|
| Schlagwörter: |
|---|
| Umfang: |
11 |
|---|
| Übergeordnetes Werk: |
Enthalten in: External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs - Dedhia, Kavita ELSEVIER, 2018, official journal of the International Association for Hydrogen Energy, New York, NY [u.a.] |
|---|---|
| Übergeordnetes Werk: |
volume:39 ; year:2014 ; number:22 ; day:24 ; month:07 ; pages:11517-11527 ; extent:11 |
| Links: |
|---|
| DOI / URN: |
10.1016/j.ijhydene.2014.05.130 |
|---|
| Katalog-ID: |
ELV012322296 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | ELV012322296 | ||
| 003 | DE-627 | ||
| 005 | 20230625110641.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 180602s2014 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.ijhydene.2014.05.130 |2 doi | |
| 028 | 5 | 2 | |a GBVA2014011000026.pica |
| 035 | |a (DE-627)ELV012322296 | ||
| 035 | |a (ELSEVIER)S0360-3199(14)01512-2 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 082 | 0 | |a 660 |a 620 | |
| 082 | 0 | 4 | |a 660 |q DE-600 |
| 082 | 0 | 4 | |a 620 |q DE-600 |
| 082 | 0 | 4 | |a 610 |q VZ |
| 084 | |a 44.94 |2 bkl | ||
| 100 | 1 | |a Park, Jung Eun |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst |
| 264 | 1 | |c 2014transfer abstract | |
| 300 | |a 11 | ||
| 336 | |a nicht spezifiziert |b zzz |2 rdacontent | ||
| 337 | |a nicht spezifiziert |b z |2 rdamedia | ||
| 338 | |a nicht spezifiziert |b zu |2 rdacarrier | ||
| 520 | |a Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. | ||
| 520 | |a Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. | ||
| 650 | 7 | |a Methanol steam reforming |2 Elsevier | |
| 650 | 7 | |a Deactivation |2 Elsevier | |
| 650 | 7 | |a Cu/ZnO/Al2O3 |2 Elsevier | |
| 650 | 7 | |a Cu/ZnO/ZrO2 |2 Elsevier | |
| 650 | 7 | |a Cu dispersion |2 Elsevier | |
| 700 | 1 | |a Yim, Sung-Dae |4 oth | |
| 700 | 1 | |a Kim, Chang Soo |4 oth | |
| 700 | 1 | |a Park, Eun Duck |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Dedhia, Kavita ELSEVIER |t External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |d 2018 |d official journal of the International Association for Hydrogen Energy |g New York, NY [u.a.] |w (DE-627)ELV000127019 |
| 773 | 1 | 8 | |g volume:39 |g year:2014 |g number:22 |g day:24 |g month:07 |g pages:11517-11527 |g extent:11 |
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.ijhydene.2014.05.130 |3 Volltext |
| 912 | |a GBV_USEFLAG_U | ||
| 912 | |a GBV_ELV | ||
| 912 | |a SYSFLAG_U | ||
| 912 | |a SSG-OLC-PHA | ||
| 936 | b | k | |a 44.94 |j Hals-Nasen-Ohrenheilkunde |q VZ |
| 951 | |a AR | ||
| 952 | |d 39 |j 2014 |e 22 |b 24 |c 0724 |h 11517-11527 |g 11 | ||
| 953 | |2 045F |a 660 | ||
| author_variant |
j e p je jep |
|---|---|
| matchkey_str |
parkjungeunyimsungdaekimchangsooparkeund:2014----:tarfrigfehnlvrunzo |
| hierarchy_sort_str |
2014transfer abstract |
| bklnumber |
44.94 |
| publishDate |
2014 |
| allfields |
10.1016/j.ijhydene.2014.05.130 doi GBVA2014011000026.pica (DE-627)ELV012322296 (ELSEVIER)S0360-3199(14)01512-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Park, Jung Eun verfasserin aut Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion Elsevier Yim, Sung-Dae oth Kim, Chang Soo oth Park, Eun Duck oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:39 year:2014 number:22 day:24 month:07 pages:11517-11527 extent:11 https://doi.org/10.1016/j.ijhydene.2014.05.130 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 39 2014 22 24 0724 11517-11527 11 045F 660 |
| spelling |
10.1016/j.ijhydene.2014.05.130 doi GBVA2014011000026.pica (DE-627)ELV012322296 (ELSEVIER)S0360-3199(14)01512-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Park, Jung Eun verfasserin aut Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion Elsevier Yim, Sung-Dae oth Kim, Chang Soo oth Park, Eun Duck oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:39 year:2014 number:22 day:24 month:07 pages:11517-11527 extent:11 https://doi.org/10.1016/j.ijhydene.2014.05.130 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 39 2014 22 24 0724 11517-11527 11 045F 660 |
| allfields_unstemmed |
10.1016/j.ijhydene.2014.05.130 doi GBVA2014011000026.pica (DE-627)ELV012322296 (ELSEVIER)S0360-3199(14)01512-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Park, Jung Eun verfasserin aut Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion Elsevier Yim, Sung-Dae oth Kim, Chang Soo oth Park, Eun Duck oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:39 year:2014 number:22 day:24 month:07 pages:11517-11527 extent:11 https://doi.org/10.1016/j.ijhydene.2014.05.130 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 39 2014 22 24 0724 11517-11527 11 045F 660 |
| allfieldsGer |
10.1016/j.ijhydene.2014.05.130 doi GBVA2014011000026.pica (DE-627)ELV012322296 (ELSEVIER)S0360-3199(14)01512-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Park, Jung Eun verfasserin aut Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion Elsevier Yim, Sung-Dae oth Kim, Chang Soo oth Park, Eun Duck oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:39 year:2014 number:22 day:24 month:07 pages:11517-11527 extent:11 https://doi.org/10.1016/j.ijhydene.2014.05.130 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 39 2014 22 24 0724 11517-11527 11 045F 660 |
| allfieldsSound |
10.1016/j.ijhydene.2014.05.130 doi GBVA2014011000026.pica (DE-627)ELV012322296 (ELSEVIER)S0360-3199(14)01512-2 DE-627 ger DE-627 rakwb eng 660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Park, Jung Eun verfasserin aut Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst 2014transfer abstract 11 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion Elsevier Yim, Sung-Dae oth Kim, Chang Soo oth Park, Eun Duck oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:39 year:2014 number:22 day:24 month:07 pages:11517-11527 extent:11 https://doi.org/10.1016/j.ijhydene.2014.05.130 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 39 2014 22 24 0724 11517-11527 11 045F 660 |
| language |
English |
| source |
Enthalten in External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs New York, NY [u.a.] volume:39 year:2014 number:22 day:24 month:07 pages:11517-11527 extent:11 |
| sourceStr |
Enthalten in External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs New York, NY [u.a.] volume:39 year:2014 number:22 day:24 month:07 pages:11517-11527 extent:11 |
| format_phy_str_mv |
Article |
| bklname |
Hals-Nasen-Ohrenheilkunde |
| institution |
findex.gbv.de |
| topic_facet |
Methanol steam reforming Deactivation Cu/ZnO/Al2O3 Cu/ZnO/ZrO2 Cu dispersion |
| dewey-raw |
660 |
| isfreeaccess_bool |
false |
| container_title |
External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |
| authorswithroles_txt_mv |
Park, Jung Eun @@aut@@ Yim, Sung-Dae @@oth@@ Kim, Chang Soo @@oth@@ Park, Eun Duck @@oth@@ |
| publishDateDaySort_date |
2014-01-24T00:00:00Z |
| hierarchy_top_id |
ELV000127019 |
| dewey-sort |
3660 |
| id |
ELV012322296 |
| language_de |
englisch |
| fullrecord |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV012322296</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230625110641.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">180602s2014 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.ijhydene.2014.05.130</subfield><subfield code="2">doi</subfield></datafield><datafield tag="028" ind1="5" ind2="2"><subfield code="a">GBVA2014011000026.pica</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV012322296</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S0360-3199(14)01512-2</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2=" "><subfield code="a">660</subfield><subfield code="a">620</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">660</subfield><subfield code="q">DE-600</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">620</subfield><subfield code="q">DE-600</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">44.94</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Park, Jung Eun</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2014transfer abstract</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">11</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Methanol steam reforming</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Deactivation</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Cu/ZnO/Al2O3</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Cu/ZnO/ZrO2</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Cu dispersion</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Yim, Sung-Dae</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Kim, Chang Soo</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Park, Eun Duck</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier</subfield><subfield code="a">Dedhia, Kavita ELSEVIER</subfield><subfield code="t">External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs</subfield><subfield code="d">2018</subfield><subfield code="d">official journal of the International Association for Hydrogen Energy</subfield><subfield code="g">New York, NY [u.a.]</subfield><subfield code="w">(DE-627)ELV000127019</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:39</subfield><subfield code="g">year:2014</subfield><subfield code="g">number:22</subfield><subfield code="g">day:24</subfield><subfield code="g">month:07</subfield><subfield code="g">pages:11517-11527</subfield><subfield code="g">extent:11</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.ijhydene.2014.05.130</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.94</subfield><subfield code="j">Hals-Nasen-Ohrenheilkunde</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">39</subfield><subfield code="j">2014</subfield><subfield code="e">22</subfield><subfield code="b">24</subfield><subfield code="c">0724</subfield><subfield code="h">11517-11527</subfield><subfield code="g">11</subfield></datafield><datafield tag="953" ind1=" " ind2=" "><subfield code="2">045F</subfield><subfield code="a">660</subfield></datafield></record></collection>
|
| author |
Park, Jung Eun |
| spellingShingle |
Park, Jung Eun ddc 660 ddc 620 ddc 610 bkl 44.94 Elsevier Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst |
| authorStr |
Park, Jung Eun |
| ppnlink_with_tag_str_mv |
@@773@@(DE-627)ELV000127019 |
| format |
electronic Article |
| dewey-ones |
660 - Chemical engineering 620 - Engineering & allied operations 610 - Medicine & health |
| delete_txt_mv |
keep |
| author_role |
aut |
| collection |
elsevier |
| remote_str |
true |
| illustrated |
Not Illustrated |
| topic_title |
660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion Elsevier |
| topic |
ddc 660 ddc 620 ddc 610 bkl 44.94 Elsevier Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion |
| topic_unstemmed |
ddc 660 ddc 620 ddc 610 bkl 44.94 Elsevier Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion |
| topic_browse |
ddc 660 ddc 620 ddc 610 bkl 44.94 Elsevier Methanol steam reforming Elsevier Deactivation Elsevier Cu/ZnO/Al2O3 Elsevier Cu/ZnO/ZrO2 Elsevier Cu dispersion |
| format_facet |
Elektronische Aufsätze Aufsätze Elektronische Ressource |
| format_main_str_mv |
Text Zeitschrift/Artikel |
| carriertype_str_mv |
zu |
| author2_variant |
s d y sdy c s k cs csk e d p ed edp |
| hierarchy_parent_title |
External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |
| hierarchy_parent_id |
ELV000127019 |
| dewey-tens |
660 - Chemical engineering 620 - Engineering 610 - Medicine & health |
| hierarchy_top_title |
External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |
| isfreeaccess_txt |
false |
| familylinks_str_mv |
(DE-627)ELV000127019 |
| title |
Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst |
| ctrlnum |
(DE-627)ELV012322296 (ELSEVIER)S0360-3199(14)01512-2 |
| title_full |
Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst |
| author_sort |
Park, Jung Eun |
| journal |
External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |
| journalStr |
External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |
| lang_code |
eng |
| isOA_bool |
false |
| dewey-hundreds |
600 - Technology |
| recordtype |
marc |
| publishDateSort |
2014 |
| contenttype_str_mv |
zzz |
| container_start_page |
11517 |
| author_browse |
Park, Jung Eun |
| container_volume |
39 |
| physical |
11 |
| class |
660 620 660 DE-600 620 DE-600 610 VZ 44.94 bkl |
| format_se |
Elektronische Aufsätze |
| author-letter |
Park, Jung Eun |
| doi_str_mv |
10.1016/j.ijhydene.2014.05.130 |
| dewey-full |
660 620 610 |
| title_sort |
steam reforming of methanol over cu/zno/zro2/al2o3 catalyst |
| title_auth |
Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst |
| abstract |
Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. |
| abstractGer |
Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. |
| abstract_unstemmed |
Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol. |
| collection_details |
GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA |
| container_issue |
22 |
| title_short |
Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst |
| url |
https://doi.org/10.1016/j.ijhydene.2014.05.130 |
| remote_bool |
true |
| author2 |
Yim, Sung-Dae Kim, Chang Soo Park, Eun Duck |
| author2Str |
Yim, Sung-Dae Kim, Chang Soo Park, Eun Duck |
| ppnlink |
ELV000127019 |
| mediatype_str_mv |
z |
| isOA_txt |
false |
| hochschulschrift_bool |
false |
| author2_role |
oth oth oth |
| doi_str |
10.1016/j.ijhydene.2014.05.130 |
| up_date |
2024-07-06T22:02:57.593Z |
| _version_ |
1803868834464006144 |
| fullrecord_marcxml |
<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">ELV012322296</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230625110641.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">180602s2014 xx |||||o 00| ||eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1016/j.ijhydene.2014.05.130</subfield><subfield code="2">doi</subfield></datafield><datafield tag="028" ind1="5" ind2="2"><subfield code="a">GBVA2014011000026.pica</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)ELV012322296</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(ELSEVIER)S0360-3199(14)01512-2</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="082" ind1="0" ind2=" "><subfield code="a">660</subfield><subfield code="a">620</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">660</subfield><subfield code="q">DE-600</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">620</subfield><subfield code="q">DE-600</subfield></datafield><datafield tag="082" ind1="0" ind2="4"><subfield code="a">610</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">44.94</subfield><subfield code="2">bkl</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Park, Jung Eun</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Steam reforming of methanol over Cu/ZnO/ZrO2/Al2O3 catalyst</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2014transfer abstract</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">11</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Steam reforming of methanol was investigated over Cu–ZnO–ZrO2–Al2O3 catalysts at 473 and 573 K. The Cu:Zn:(Al + Zr) molar ratio was 3:3:4; however, the Zr:Al molar ratio was varied and the catalysts were pretreated at different calcination and reduction temperatures. The synthesized catalysts were characterized by N2 physisorption, temperature-programmed reduction with H2 (H2-TPR), X-ray diffraction, oxidized surface TPR, and infrared spectroscopy after carbon monoxide chemisorption. The crystalline size of Cu decreased on increasing the calcination temperatures from 573 to 623 K and increased on increasing the reduction temperatures from 523 to 573 K. Among the tested catalysts, the Cu–ZnO–ZrO2 catalyst exhibited the highest and lowest hydrogen-formation rates at 473 and 573 K, respectively. After the reaction at 573 K, all the tested catalysts exhibited an increase in the Cu crystalline size, causing the catalyst deactivation. Among the tested catalysts, the Cu–ZnO–ZrO2–Al2O3 catalyst, where the Cu:Zn:Al:Zr molar ratio was 3:3:2:2, showed the highest and most stable catalytic activity at 573 K. Cu dispersion and catalyst composition affected the catalytic performance for steam reforming of methanol.</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Methanol steam reforming</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Deactivation</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Cu/ZnO/Al2O3</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Cu/ZnO/ZrO2</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="650" ind1=" " ind2="7"><subfield code="a">Cu dispersion</subfield><subfield code="2">Elsevier</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Yim, Sung-Dae</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Kim, Chang Soo</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Park, Eun Duck</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier</subfield><subfield code="a">Dedhia, Kavita ELSEVIER</subfield><subfield code="t">External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs</subfield><subfield code="d">2018</subfield><subfield code="d">official journal of the International Association for Hydrogen Energy</subfield><subfield code="g">New York, NY [u.a.]</subfield><subfield code="w">(DE-627)ELV000127019</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:39</subfield><subfield code="g">year:2014</subfield><subfield code="g">number:22</subfield><subfield code="g">day:24</subfield><subfield code="g">month:07</subfield><subfield code="g">pages:11517-11527</subfield><subfield code="g">extent:11</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">https://doi.org/10.1016/j.ijhydene.2014.05.130</subfield><subfield code="3">Volltext</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_ELV</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SYSFLAG_U</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">SSG-OLC-PHA</subfield></datafield><datafield tag="936" ind1="b" ind2="k"><subfield code="a">44.94</subfield><subfield code="j">Hals-Nasen-Ohrenheilkunde</subfield><subfield code="q">VZ</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">39</subfield><subfield code="j">2014</subfield><subfield code="e">22</subfield><subfield code="b">24</subfield><subfield code="c">0724</subfield><subfield code="h">11517-11527</subfield><subfield code="g">11</subfield></datafield><datafield tag="953" ind1=" " ind2=" "><subfield code="2">045F</subfield><subfield code="a">660</subfield></datafield></record></collection>
|
| score |
7.3994293 |