High performance CuO-CeO2 catalysts for selective oxidation of CO in excess hydrogen: Effect of hydrothermal preparation conditions

被引：31

作者：

Zhu, Pengfei ^{[1
,2
]}

Li, Jing ^{[1
]}

Huang, Qinqin ^{[1
]}

Yan, Siming ^{[2
]}

Liu, Mei ^{[2
]}

Zhou, Renxian ^{[1
]}

机构：

[1] Zhejiang Univ, Inst Catalysis, Hangzhou 310028, Zhejiang, Peoples R China

[2] SW Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China

来源：

JOURNAL OF NATURAL GAS CHEMISTRY | 2009年 / 18卷 / 03期

关键词：

selective oxidation; CO; excess hydrogen; CuO-CeO2; catalyst; hydrothermal; preparation condition; CARBON-MONOXIDE; PREFERENTIAL OXIDATION; FUEL-CELL; CUO/CEO2; CATALYSTS; COPPER-CERIA; H-2-RICH GAS; RICH STREAM; H-2; OXIDE; TEMPERATURE;

D O I：

10.1016/S1003-9953(08)60119-X

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

High performance CuO-CeO2 catalysts for selective oxidation of CO in excess hydrogen were prepared by a hydrothermal method under different preparation conditions and evaluated for catalytic activities and selectivities. By changing the n(CTAB)/n(Ce) ratio and hydrothermal aging time, the catalytic activity of the CuO-CeO2 catalysts increased and the operating temperature window, in which the CO conversion was higher than 99%, was widened. XRD results showed no peaks of CuOx species and Cu-Ce-O solid solution were observed. On the other hand, Cu+ species in the CuO-CeO2 catalysts, which was associated with a strong interaction between copper oxide clusters and cerium oxide and could be favorable for improving the selective oxidation performance of CO in excess H-2, were detected by H-2-TPR and XPS techniques.

引用

页码：346 / 353

页数：8

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