燃料化学学报2017，Vol.45Issue(2)：243-248,6.
TiO2掺杂CuMnCe/Al2 O3催化剂对甲烷催化燃烧脱氧反应的影响
Effect of TiO2 doping on methane catalytic combustion deoxidation of CuMnCe/Al2 O3 catalyst
袁善良 1兰海 2薄其飞 1张彪 2肖熙 1蒋毅2
作者信息
- 1. 中国科学院成都有机化学有限公司，中国科学院成都有机化学研究所，四川 成都 610041
- 2. 中国科学院大学，北京 100049
- 折叠
摘要
Abstract
CuMnCe/TiO2-Al2 O3 catalysts with different TiO2 contents were prepared by the co-impregnation method and characterized by BET, XRD, XPS and H2-TPR techniques. The catalytic performance in methane deoxidation reaction were investigated using CGK-5A fixed bed reactor. Results showed that doping some TiO2 in the Al2 O3 support has no effect on the crystalline structure of the active ingredient. But it can effectively improve Al2 O3 support sintering resistance and thermal stability, furthermore, it increases content of Ce3+/( Ce3++Ce4+) in the CuMnCe/Al2 O3 catalysts, which improves the mobility of oxygen. Besides, the content of adsorbed oxygen Osur/( Osur+Olat ) and reducible species in the catalyst surface are increased. Thus, effectively, doping some TiO2 into the Al2 O3 support improved the catalytic activity of deoxygenation catalyst for methane combustion. CuMnCe/4%TiO2-Al2 O3 exhibited optimum catalytic activity and oxygen conversion rate reached 100% at 387℃.关键词
TiO2/Al2 O3/脱氧/CuMnCe催化剂/吸附氧Key words
titania/alumina/deoxygenation/CuMnCe catalyst/adsorbed oxygen分类
化学化工引用本文复制引用
袁善良,兰海,薄其飞,张彪,肖熙,蒋毅..TiO2掺杂CuMnCe/Al2 O3催化剂对甲烷催化燃烧脱氧反应的影响[J].燃料化学学报,2017,45(2):243-248,6.
