Citation: YUAN Shan-liang, LAN Hai, BO Qi-fei, ZHANG Biao, XIAO Xi, JIANG Yi. Effect of TiO₂ doping on methane catalytic combustion deoxidation of CuMnCe/Al₂O₃ catalyst[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(2): 243-248. shu

Effect of TiO₂ doping on methane catalytic combustion deoxidation of CuMnCe/Al₂O₃ catalyst

YUAN Shan-liang ^1,2 ,
LAN Hai ^1,2 ,
BO Qi-fei ^1,2 ,
ZHANG Biao ¹ ,
XIAO Xi ^1,2 ,
JIANG Yi ^1,*,,

1.
Chengdu Organic Chemicals Co., Ltd., Chinese Academy of Sciences, Chengdu Institute of Organic Chemistry, Chengdu 610041, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: JIANG Yi, yjiang@cioc.ac.cn
Received Date: 10 November 2016
Revised Date: 23 December 2016

Figures(4)

CuMnCe/TiO₂-Al₂O₃ 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 Al₂O₃support has no effect on the crystalline structure of the active ingredient.But it can effectively improve Al₂O₃ support sintering resistance and thermal stability, furthermore, it increases content of Ce³⁺/(Ce³⁺+Ce⁴⁺) in the CuMnCe/Al₂O₃ catalysts, which improves the mobility of oxygen.Besides, the content of adsorbed oxygen O_sur/(O_sur+O_latt) and reducible species in the catalyst surface are increased.Thus, effectively, doping some TiO₂ into the Al₂O₃support improved the catalytic activity of deoxygenation catalyst for methane combustion.CuMnCe/4% TiO₂-Al₂O₃ exhibited optimum catalytic activity and oxygen conversion rate reached 100% at 387℃.
- titania,
- alumina,
- deoxygenation,
- CuMnCe catalyst,
- adsorbed oxygen
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Effect of TiO2 doping on methane catalytic combustion deoxidation of CuMnCe/Al2O3 catalyst

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Effect of TiO₂ doping on methane catalytic combustion deoxidation of CuMnCe/Al₂O₃ catalyst