Catalytic performance of K-promoted Rh/USY catalysts in preferential oxidation of CO in rich hydrogen

被引：41

作者：

Tanaka, H ^{[1
]}

Ito, S ^{[1
]}

Kameoka, S ^{[1
]}

Tomishige, K ^{[1
]}

Kunimori, K ^{[1
]}

机构：

[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 2003年 / 250卷 / 02期

关键词：

CO oxidation; selective oxidation; preferential oxidation; rich hydrogen; potassium promoted; Rh/USY;

D O I：

10.1016/S0926-860X(03)00320-X

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：

K-promoted Rh/USY (molar ratio: K/Rh = 3) catalyst was found to exhibit high performance in preferential oxidation of CO in rich hydrogen. Such high performance was maintained in the presence of steam and CO2. The CO oxidation activity of the K-Rh/USY catalyst was independent of the partial pressure of H-2, while the activity of the unpromoted Rh/USY catalyst was decreased significantly in hydrogen-rich stream. The effect of potassium addition on the catalyst structure was investigated and is discussed in terms of the differences in the catalytic performance. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：255 / 263

页数：9

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