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

YUAN Shan-liang; LAN Hai; BO Qi-fei; ZHANG Biao; XIAO Xi; JIANG Yi

Volume 45 Issue 2

Feb. 2017

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Article Navigation > Journal of Fuel Chemistry and Technology > 2017 > 45(2): 243-248

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.

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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.

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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 Biao¹,
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

Received Date: 2016-11-10
Rev Recd Date: 2016-12-23

Available Online: 2021-01-23

Publish Date: 2017-02-10

Abstract

Abstract

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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References(21)

References

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