Synergistic catalysis of carbon dioxide hydrogenation into methanol by yttria-doped ceria/γ-alumina-supported copper oxide catalysts:: effect of support and dopant

被引：42

作者：

Wang, JB

Lee, HK

Huang, TJ ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu, Taiwan

[2] I Shou Univ, Dept Chem Engn, Kaohsiung, Taiwan

来源：

CATALYSIS LETTERS | 2002年 / 83卷 / 1-2期

关键词：

carbon dioxide; hydrogenation; methanol; copper oxide; yttria-doped ceria; interfacial metal oxide-support interaction;

D O I：

10.1023/A:1020613700495

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：

Methanol synthesis from carbon dioxide hydrogenation was studied over ceria/gamma-alumina- and yttria-doped ceria (YDC)/gamma-alumina-supported copper oxide catalysts to seek insight into the catalysis at metal-support interfaces. It was found that, in comparison with Cu/gamma-Al2O3, the Cu/CeO2/gamma-Al2O3 and Cu/YDC/gamma-Al2O3 catalysts exhibited substantial enhancement in activity and selectivity toward methanol formation. The extent of enhancement was augmented by increased ceria loading on gamma-alumina and with increased yttria doping into ceria. The enhancement is inferred to result from the synergistic effect between copper oxide and surface oxygen vacancies of ceria.

引用

页码：79 / 86

页数：8

共 51 条

[1] TRANSITION-METAL ION DIMERS FORMED IN CEO2 - AN EPR STUDY [J].