Active nonmetallic Au and Pt species on ceria-based water-gas shift catalysts

被引：2702

作者：

Fu, Q ^{[1
]}

Saltsburg, H ^{[1
]}

Flytzani-Stephanopoulos, M ^{[1
]}

机构：

[1] Tufts Univ, Dept Chem & Biol Engn, Medford, MA 02155 USA

来源：

SCIENCE | 2003年 / 301卷 / 5635期

关键词：

D O I：

10.1126/science.1085721

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Traditional analysis of reactions catalyzed by supported metals involves the structure of the metallic particles. However, we report here that for the class of nanostructured gold - or platinum-cerium oxide catalysts, which are active for the water-gas shift reaction, metal nanoparticles do not participate in the reaction. Nonmetallic gold or platinum species strongly associated with surface cerium-oxygen groups are responsible for the activity.

引用

页码：935 / 938

页数：4

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