Effects of calcination temperature on the catalytic performance of Ti(SO
A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
FENG, Ru [verfasserIn] GAO, Xiu-juan [verfasserIn] YANG, Qi [verfasserIn] LI, Ming-jie [verfasserIn] ZHANG, Jun-feng [verfasserIn] SONG, Fa-en [verfasserIn] ZHANG, Qing-de [verfasserIn] HAN, Yi-zhuo [verfasserIn] TAN, Yi-sheng [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2021 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Journal of fuel chemistry and technology - Amsterdam [u.a.] : Elsevier, 2006, 49, Seite 72-79 |
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| Übergeordnetes Werk: |
volume:49 ; pages:72-79 |
| DOI / URN: |
10.1016/S1872-5813(21)60004-X |
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| Katalog-ID: |
ELV005439620 |
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| 520 | |a A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. | ||
| 650 | 4 | |a dimethyl ether | |
| 650 | 4 | |a direct oxidation | |
| 650 | 4 | |a polyoxymethylene dimethyl ethers | |
| 650 | 4 | |a calcination temperature | |
| 650 | 4 | |a Ti(SO | |
| 700 | 1 | |a GAO, Xiu-juan |e verfasserin |4 aut | |
| 700 | 1 | |a YANG, Qi |e verfasserin |4 aut | |
| 700 | 1 | |a LI, Ming-jie |e verfasserin |4 aut | |
| 700 | 1 | |a ZHANG, Jun-feng |e verfasserin |4 aut | |
| 700 | 1 | |a SONG, Fa-en |e verfasserin |4 aut | |
| 700 | 1 | |a ZHANG, Qing-de |e verfasserin |4 aut | |
| 700 | 1 | |a HAN, Yi-zhuo |e verfasserin |4 aut | |
| 700 | 1 | |a TAN, Yi-sheng |e verfasserin |4 aut | |
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10.1016/S1872-5813(21)60004-X doi (DE-627)ELV005439620 (ELSEVIER)S1872-5813(21)60004-X DE-627 ger DE-627 rda eng 540 DE-600 FENG, Ru verfasserin aut Effects of calcination temperature on the catalytic performance of Ti(SO 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. dimethyl ether direct oxidation polyoxymethylene dimethyl ethers calcination temperature Ti(SO GAO, Xiu-juan verfasserin aut YANG, Qi verfasserin aut LI, Ming-jie verfasserin aut ZHANG, Jun-feng verfasserin aut SONG, Fa-en verfasserin aut ZHANG, Qing-de verfasserin aut HAN, Yi-zhuo verfasserin aut TAN, Yi-sheng verfasserin aut Enthalten in Journal of fuel chemistry and technology Amsterdam [u.a.] : Elsevier, 2006 49, Seite 72-79 Online-Ressource (DE-627)534673082 (DE-600)2365488-0 (DE-576)284927007 1872-5813 nnns volume:49 pages:72-79 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 49 72-79 |
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10.1016/S1872-5813(21)60004-X doi (DE-627)ELV005439620 (ELSEVIER)S1872-5813(21)60004-X DE-627 ger DE-627 rda eng 540 DE-600 FENG, Ru verfasserin aut Effects of calcination temperature on the catalytic performance of Ti(SO 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. dimethyl ether direct oxidation polyoxymethylene dimethyl ethers calcination temperature Ti(SO GAO, Xiu-juan verfasserin aut YANG, Qi verfasserin aut LI, Ming-jie verfasserin aut ZHANG, Jun-feng verfasserin aut SONG, Fa-en verfasserin aut ZHANG, Qing-de verfasserin aut HAN, Yi-zhuo verfasserin aut TAN, Yi-sheng verfasserin aut Enthalten in Journal of fuel chemistry and technology Amsterdam [u.a.] : Elsevier, 2006 49, Seite 72-79 Online-Ressource (DE-627)534673082 (DE-600)2365488-0 (DE-576)284927007 1872-5813 nnns volume:49 pages:72-79 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 49 72-79 |
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10.1016/S1872-5813(21)60004-X doi (DE-627)ELV005439620 (ELSEVIER)S1872-5813(21)60004-X DE-627 ger DE-627 rda eng 540 DE-600 FENG, Ru verfasserin aut Effects of calcination temperature on the catalytic performance of Ti(SO 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. dimethyl ether direct oxidation polyoxymethylene dimethyl ethers calcination temperature Ti(SO GAO, Xiu-juan verfasserin aut YANG, Qi verfasserin aut LI, Ming-jie verfasserin aut ZHANG, Jun-feng verfasserin aut SONG, Fa-en verfasserin aut ZHANG, Qing-de verfasserin aut HAN, Yi-zhuo verfasserin aut TAN, Yi-sheng verfasserin aut Enthalten in Journal of fuel chemistry and technology Amsterdam [u.a.] : Elsevier, 2006 49, Seite 72-79 Online-Ressource (DE-627)534673082 (DE-600)2365488-0 (DE-576)284927007 1872-5813 nnns volume:49 pages:72-79 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 49 72-79 |
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10.1016/S1872-5813(21)60004-X doi (DE-627)ELV005439620 (ELSEVIER)S1872-5813(21)60004-X DE-627 ger DE-627 rda eng 540 DE-600 FENG, Ru verfasserin aut Effects of calcination temperature on the catalytic performance of Ti(SO 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. dimethyl ether direct oxidation polyoxymethylene dimethyl ethers calcination temperature Ti(SO GAO, Xiu-juan verfasserin aut YANG, Qi verfasserin aut LI, Ming-jie verfasserin aut ZHANG, Jun-feng verfasserin aut SONG, Fa-en verfasserin aut ZHANG, Qing-de verfasserin aut HAN, Yi-zhuo verfasserin aut TAN, Yi-sheng verfasserin aut Enthalten in Journal of fuel chemistry and technology Amsterdam [u.a.] : Elsevier, 2006 49, Seite 72-79 Online-Ressource (DE-627)534673082 (DE-600)2365488-0 (DE-576)284927007 1872-5813 nnns volume:49 pages:72-79 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 49 72-79 |
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10.1016/S1872-5813(21)60004-X doi (DE-627)ELV005439620 (ELSEVIER)S1872-5813(21)60004-X DE-627 ger DE-627 rda eng 540 DE-600 FENG, Ru verfasserin aut Effects of calcination temperature on the catalytic performance of Ti(SO 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. dimethyl ether direct oxidation polyoxymethylene dimethyl ethers calcination temperature Ti(SO GAO, Xiu-juan verfasserin aut YANG, Qi verfasserin aut LI, Ming-jie verfasserin aut ZHANG, Jun-feng verfasserin aut SONG, Fa-en verfasserin aut ZHANG, Qing-de verfasserin aut HAN, Yi-zhuo verfasserin aut TAN, Yi-sheng verfasserin aut Enthalten in Journal of fuel chemistry and technology Amsterdam [u.a.] : Elsevier, 2006 49, Seite 72-79 Online-Ressource (DE-627)534673082 (DE-600)2365488-0 (DE-576)284927007 1872-5813 nnns volume:49 pages:72-79 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 49 72-79 |
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FENG, Ru @@aut@@ GAO, Xiu-juan @@aut@@ YANG, Qi @@aut@@ LI, Ming-jie @@aut@@ ZHANG, Jun-feng @@aut@@ SONG, Fa-en @@aut@@ ZHANG, Qing-de @@aut@@ HAN, Yi-zhuo @@aut@@ TAN, Yi-sheng @@aut@@ |
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FENG, Ru |
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FENG, Ru ddc 540 misc dimethyl ether misc direct oxidation misc polyoxymethylene dimethyl ethers misc calcination temperature misc Ti(SO Effects of calcination temperature on the catalytic performance of Ti(SO |
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540 DE-600 Effects of calcination temperature on the catalytic performance of Ti(SO dimethyl ether direct oxidation polyoxymethylene dimethyl ethers calcination temperature Ti(SO |
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ddc 540 misc dimethyl ether misc direct oxidation misc polyoxymethylene dimethyl ethers misc calcination temperature misc Ti(SO |
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ddc 540 misc dimethyl ether misc direct oxidation misc polyoxymethylene dimethyl ethers misc calcination temperature misc Ti(SO |
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Effects of calcination temperature on the catalytic performance of Ti(SO |
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Effects of calcination temperature on the catalytic performance of Ti(SO |
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FENG, Ru GAO, Xiu-juan YANG, Qi LI, Ming-jie ZHANG, Jun-feng SONG, Fa-en ZHANG, Qing-de HAN, Yi-zhuo TAN, Yi-sheng |
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effects of calcination temperature on the catalytic performance of ti(so |
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Effects of calcination temperature on the catalytic performance of Ti(SO |
| abstract |
A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. |
| abstractGer |
A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. |
| abstract_unstemmed |
A series of Ti(SO4)2/activated carbon spheres (CS) bifunctional catalysts were designed and prepared by impregnation method, and the effect of calcination temperature of the catalysts on direct oxidation of dimethyl ether (DME)to polyoxymethylene dimethyl ethers (DMM x ) was investigated. The results showed that the performance of Ti(SO4)2/CS catalysts was closely related to the calcination temperature. The 30%Ti(SO4)2/CS catalyst calcined under O2 atmosphere at 280°Cexhibited excellent activity over which the conversion of DME reached 11.7% with the selectivity of DMM1-3 up to 75.8%,wherein, the selectivity of DMM2,3 was over 30%. The texture and surface properties of thecatalysts were characterized by SEM, XRD, Raman, TG, NH3-TPD and XPS. The suitable amount of weak acid sites and redox sites of the Ti(SO4)2/CS were beneficial to the direct oxidation of DME to DMM x . The calcination temperature changed the distribution of functional groups on the surface of CS which then affected the dispersion form of Ti(SO4)2. The type and amountof acid centers especially the ratio of weak acid and medium strong acid could also be adjusted, which can lead to different gradients of the surface acidity of the catalyst. The reasonable matching of the acidic and redox sites on the catalyst can evidently promote the growth of C–O chain. |
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