A comparative study of palladium and copper catalysts in methanol synthesis

被引：29
|
作者：
Shen, WJ
Ichihashi, Y
Matsumura, Y
机构：
[1] Natl Inst Adv Ind Sci & Technol, Osaka 5638577, Japan
[2] Res Inst Innovat Technol Earth, Kyoto 6190292, Japan
来源：
CATALYSIS LETTERS | 2002年 / 79卷 / 1-4期
关键词：
methanol synthesis; copper; palladium; cerium oxide; silica; EXAFS;
D O I：
10.1023/A:1015334914620
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：
Catalytic activity of copper supported on cerium oxide (Cu/CeO2) in methanol synthesis from carbon monoxide and hydrogen at 473 K is similar to that of ceria-supported palladium (Pd/CeO2) Both catalysts contain 0.3 mmol g(-1) of the active metals and the activities on a mole basis of the active metals are significantly higher than that of a commercial copper catalyst. Analyses by EXAFS suggest that the particle size of copper in Cu/CeO2 is similar to that of palladium in Pd/CeO2. The activity of copper supported on silica is very low even at 523 K although the particle size of copper is close to that in Cu/CeO2. Hence, cerium oxide promotes the activity of copper as can be seen in Pd/CeO2.
引用
收藏
页码：125 / 127
页数：3
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