Selective removal of CO in methanol reformed gas over Cu-supported mixed metal oxides

被引：102

作者：

Sekizawa, K ^{[1
]}

Yano, S ^{[1
]}

Eguchi, K ^{[1
]}

Arai, H ^{[1
]}

机构：

[1] Kyushu Univ, Grad Sch Engn Sci, Dept Mat Sci & Technol, Kasuga, Fukuoka 816, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 1998年 / 169卷 / 02期

关键词：

CO-shift reaction; CO oxidation; Cu catalyst;

D O I：

10.1016/S0926-860X(98)00018-0

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：

Copper catalysts supported on alumina-based mixed oxides (Cu/Al2O3-MOx; M=Al, Ce, Co, Cr, Fe, Mg, Mn, Sn, Zn, and Zr) were investigated for CO removal in the methanol steam reformed gas. Cu/Al2O3-ZnO demonstrated excellent activity. The order of the activity for Cu/Al2O3-MOx with different M was Zn>Al>Cr>Mn>Mg. The highest catalytic activity is strongly related to the panicle size of Cu. Spinel type Cu-Al-Zn oxides, formed after the preparation, gave rise to fine Cu particles which deposited on the support by reduction so that high catalytic activity is led by small Cu particles. Excess amount of Cu (>30 wt%) leads to low dispersion and causes formation of large particles and deterioration of catalytic activity. Although it is difficult to remove the trace CO in the reformed gas through water-gas-shift reaction, addition of O-2 to the reformed gas is effective to enhance the CO removal through CO oxidation. (C) 1998 Elsevier Science B.V.

引用

页码：291 / 297

页数：7

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