Effect of Ca doping on the catalytic performance of CuO-CeO2 catalysts for methane combustion

被引：22

作者：

Qiao, Dongsheng ^{[1
,2
]}

Lu, Guanzhong ^{[1
,2
,3
]}

Mao, Dongsen ^{[3
]}

Liu, Xiaohui ^{[1
,2
]}

Li, Hongfeng ^{[1
,2
]}

Guo, Yun ^{[1
,2
]}

Guo, Yanglong ^{[1
,2
]}

机构：

[1] E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China

[2] E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China

[3] Shanghai Inst Technol, Res Inst Appl Catalysis, Shanghai 200235, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2010年 / 11卷 / 09期

关键词：

Methane; Catalytic combustion; CuO-CeO2; Ca doping; DOPED CERIA; COMPOSITE CATALYSTS; MICROSTRUCTURE; CO; REDUCTION; OXIDATION; OXIDES; RAMAN; CEO2; PD;

D O I：

10.1016/j.catcom.2010.03.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Methane catalytic combustion was carried out over a series of Ca doped Ce0.9 - xCu0.1CaxO delta (0 < x <= 0.3) catalysts prepared by the citric acid complexation-combustion method. The catalyst with x = 0.05 showed the optimum activity, with T-50 = 478 degrees C. 60 degrees C lower than that of Ca undoped catalyst. The Ca doping promoted the formation of oxygen vacancies of the catalyst. With the increase in Ca amount, more carbonate species were formed on the catalyst surfaces. The carbonate species produced on the catalysts after long-term reaction, were proposed to be responsible for the activity loss of the catalysts. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：858 / 861

页数：4

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