Low temperature methanol synthesis from carbon monoxide and hydrogen over ceria supported copper catalyst

被引:29
作者
Shen, WJ [1 ]
Ichihashi, Y [1 ]
Matsumura, Y [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Ikeda, Osaka 5638577, Japan
关键词
methanol synthesis; copper; cerium oxide; TPR; XRD; EXAFS; formation of copper oxides;
D O I
10.1016/j.apcata.2004.12.046
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
High catalytic activity in the methanol synthesis from carbon monoxide and hydrogen can be produced with ceria supported copper catalysts prepared by a coprecipitation method at a reaction temperature below 200 degrees C. In comparison with commercial copper-zinc catalysts, the equivalent activity is obtained it a lower reaction temperature by 60 degrees C, while it is still unstable. Although the reaction atmosphere is reductive, metallic copper particles formed in the pretreatment with hydrogen are oxidized and the catalyst is highly activated. The size of the copper oxide species produced is significantly small, showing dispersion of copper on cerium oxide during the reaction. Hence, the interaction between copper and cerium oxide is probably indispensable for the appearance of the high catalytic activity. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:221 / 226
页数:6
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