Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts
Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influence...
Ausführliche Beschreibung
Autor*in: |
Brijaldo, Maria H. [verfasserIn] |
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Englisch |
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2020transfer abstract |
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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.] |
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Übergeordnetes Werk: |
volume:45 ; year:2020 ; number:53 ; day:30 ; month:10 ; pages:28732-28751 ; extent:20 |
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DOI / URN: |
10.1016/j.ijhydene.2020.07.205 |
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520 | |a Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. | ||
520 | |a Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. | ||
650 | 7 | |a Hydrogen |2 Elsevier | |
650 | 7 | |a Bio-oil |2 Elsevier | |
650 | 7 | |a Decomposition |2 Elsevier | |
650 | 7 | |a Metal |2 Elsevier | |
650 | 7 | |a Acetic acid |2 Elsevier | |
700 | 1 | |a Caytuero, Alexander E. |4 oth | |
700 | 1 | |a Martínez, José J. |4 oth | |
700 | 1 | |a Rojas, Hugo |4 oth | |
700 | 1 | |a Passos, Fabio B. |4 oth | |
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10.1016/j.ijhydene.2020.07.205 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001242.pica (DE-627)ELV051726793 (ELSEVIER)S0360-3199(20)32832-9 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Brijaldo, Maria H. verfasserin aut Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts 2020transfer abstract 20 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Hydrogen Elsevier Bio-oil Elsevier Decomposition Elsevier Metal Elsevier Acetic acid Elsevier Caytuero, Alexander E. oth Martínez, José J. oth Rojas, Hugo oth Passos, Fabio B. 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:45 year:2020 number:53 day:30 month:10 pages:28732-28751 extent:20 https://doi.org/10.1016/j.ijhydene.2020.07.205 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 45 2020 53 30 1030 28732-28751 20 |
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10.1016/j.ijhydene.2020.07.205 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001242.pica (DE-627)ELV051726793 (ELSEVIER)S0360-3199(20)32832-9 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Brijaldo, Maria H. verfasserin aut Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts 2020transfer abstract 20 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Hydrogen Elsevier Bio-oil Elsevier Decomposition Elsevier Metal Elsevier Acetic acid Elsevier Caytuero, Alexander E. oth Martínez, José J. oth Rojas, Hugo oth Passos, Fabio B. 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:45 year:2020 number:53 day:30 month:10 pages:28732-28751 extent:20 https://doi.org/10.1016/j.ijhydene.2020.07.205 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 45 2020 53 30 1030 28732-28751 20 |
allfields_unstemmed |
10.1016/j.ijhydene.2020.07.205 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001242.pica (DE-627)ELV051726793 (ELSEVIER)S0360-3199(20)32832-9 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Brijaldo, Maria H. verfasserin aut Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts 2020transfer abstract 20 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Hydrogen Elsevier Bio-oil Elsevier Decomposition Elsevier Metal Elsevier Acetic acid Elsevier Caytuero, Alexander E. oth Martínez, José J. oth Rojas, Hugo oth Passos, Fabio B. 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:45 year:2020 number:53 day:30 month:10 pages:28732-28751 extent:20 https://doi.org/10.1016/j.ijhydene.2020.07.205 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 45 2020 53 30 1030 28732-28751 20 |
allfieldsGer |
10.1016/j.ijhydene.2020.07.205 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001242.pica (DE-627)ELV051726793 (ELSEVIER)S0360-3199(20)32832-9 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Brijaldo, Maria H. verfasserin aut Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts 2020transfer abstract 20 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Hydrogen Elsevier Bio-oil Elsevier Decomposition Elsevier Metal Elsevier Acetic acid Elsevier Caytuero, Alexander E. oth Martínez, José J. oth Rojas, Hugo oth Passos, Fabio B. 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:45 year:2020 number:53 day:30 month:10 pages:28732-28751 extent:20 https://doi.org/10.1016/j.ijhydene.2020.07.205 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 45 2020 53 30 1030 28732-28751 20 |
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10.1016/j.ijhydene.2020.07.205 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001242.pica (DE-627)ELV051726793 (ELSEVIER)S0360-3199(20)32832-9 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Brijaldo, Maria H. verfasserin aut Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts 2020transfer abstract 20 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. Hydrogen Elsevier Bio-oil Elsevier Decomposition Elsevier Metal Elsevier Acetic acid Elsevier Caytuero, Alexander E. oth Martínez, José J. oth Rojas, Hugo oth Passos, Fabio B. 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:45 year:2020 number:53 day:30 month:10 pages:28732-28751 extent:20 https://doi.org/10.1016/j.ijhydene.2020.07.205 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 45 2020 53 30 1030 28732-28751 20 |
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hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts |
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Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts |
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Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. |
abstractGer |
Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. |
abstract_unstemmed |
Acetic acid decomposition to produce hydrogen was studied over Pd/Al2O3, Pt/Al2O3, Ni/Al2O3, and Co/Al2O3 catalysts. Pd/Al2O3 and Pt/Al2O3 systems exhibited high levels of conversion and hydrogen selectivity, with Pt/Al2O3 showing a hydrogen selectivity of 51.3% at 973 K. This behavior was influenced by the high dispersion and small particle size of Pt as well as the dissociative adsorption of acetic acid (acetate species) as exhibited by Pt/Al2O3 and Pd/Al2O3 systems. Additionally, Ni/Al2O3 and Co/Al2O3 were less active and presented low selectivity to hydrogen. These catalysts exhibited low dissociation of acetic acid on their surfaces, therefore hindering acetic acid transformation and hydrogen generation. However, when Ni/Al2O3 and Co/Al2O3 were reduced at 973 K, the conversion of acetic acid and hydrogen formation increased favorably. Co/Al2O3 showed less deactivation during time on stream. Deposited carbon on catalysts corresponded to the formation of carbon filaments for Pd/Al2O3 and Co/Al2O3 and of carbon nanotubes in the case of Ni/Al2O3. |
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Hydrogen production from acetic acid decomposition as bio-oil model molecule over supported metal catalysts |
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Caytuero, Alexander E. Martínez, José J. Rojas, Hugo Passos, Fabio B. |
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