Preferential CO oxidation on Ce-promoted Pt/γ-Al2O3 catalysts under H2-rich atmosphere

被引：33

作者：

Liu Huanling ^{[1
]}

Lei, Ma ^{[1
]}

Shao Saibing ^{[1
,2
]}

Li Zenghe ^{[2
]}

Wang Aiqin ^{[1
]}

Huang Yanqiang ^{[1
]}

Tao, Zhang ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

[2] Beijing Inst Chem Technol, Beijing 100029, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2007年 / 28卷 / 12期

关键词：

platinum; cerium; alumina; co-deposition-precipitation; carbon monoxide; preferential oxidation; fuel cell;

D O I：

10.1016/S1872-2067(08)60008-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Preferential CO oxidation (PROX) under hydrogen-rich atmosphere was investigated over Ce-promoted Pt/gamma-Al2O3 catalysts. The preparation procedures and conditions, including co-deposition-precipitation (CP) sequential deposition-precipitation (SP), and deposition-precipitation temperature, had great impacts on the catalytic activity. Among the catalysts investigated, the Pt-Ce/gamma-Al2O3-CP-80 catalyst prepared by co-deposition-precipitation at 80 degrees C showed the best catalytic performance with the maximum CO conversion of 85% at 120 degrees C. The catalysts prepared under different conditions were further characterized by temperature-programmed reduction (H-2-TPR) and in situ DRIFTS, and the promoting role of Ce was clarified.

引用

页码：1077 / 1082

页数：6

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