CO2 reforming of CH4 on doped Rh/Al2O3 catalysts

被引：38
|
作者：
Sarusi, I. [1 ]
Fodor, K. [1 ]
Baan, K. [1 ]
Oszko, A. [1 ]
Potari, G. [1 ]
Erdohelyi, A. [1 ,2 ]
机构：
[1] Univ Szeged, Inst Phys Chem & Mat Sci, H-6725 Szeged, Hungary
[2] Hungarian Acad Sci, React Kinet Lab, Chem Res Ctr, H-6725 Szeged, Hungary
来源：
CATALYSIS TODAY | 2011年 / 171卷 / 01期
关键词：
Dry reforming of methane; Reaction of methane with carbon dioxide; Promoted alumina supported Rh catalyst; Dissociation of carbon dioxide; SUPPORTED RH CATALYSTS; PROMOTED RH/SIO2 CATALYSTS; RHODIUM CATALYSTS; SURFACE INTERACTION; CARBON-DIOXIDE; METHANE; HYDROGENATION; ACTIVATION; OXIDATION; SELECTIVITY;
D O I：
10.1016/j.cattod.2011.03.075
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The reforming of methane with carbon dioxide has been investigated at 773 K on Rh/Al2O3 promoted with TiO2 and V2O5. In addition, the dissociation of carbon dioxide and methane has also been examined. TPR and XPS results revealed that during the pre-treatment of the catalysts not only Rh reduced but also TiO2 slightly and V2O5 significantly to V4+ below 600 K. The dissociation of carbon dioxide occurred most easily on vanadia promoted catalyst. Vanadia and titania promoted Rh/Al2O3 was found to be more active in the CO2 + CH4 reaction than the Rh/Al2O3. The increase of the conversion observed on V2O5 and TiO2 promoted Rh/Al2O3 catalysts could be attributed to the oxygen vacancies which formed on the additives during the pretreatment and the reaction. (C) 2011 Elsevier B. V. All rights reserved.
引用
收藏
页码：132 / 139
页数：8
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