Spectroscopic Study on the Nature of Active Entities in Copper-Ceria CO-PROX Catalysts

被引：24

作者：

Martinez-Arias, A. ^{[1
]}

Gamarra, D. ^{[1
]}

Fernandez-Garcia, M. ^{[1
]}

Hornes, A. ^{[1
]}

Belver, C. ^{[1
]}

机构：

[1] CSIC, Inst Catalisis & Petroleoquim, Madrid 28049, Spain

来源：

TOPICS IN CATALYSIS | 2009年 / 52卷 / 10期

关键词：

CuO-CeO2; catalysts; CO-PROX; Operando-DRIFTS; Operando-XANES; In situ Raman; Kinetic analysis; CARBON-MONOXIDE OXIDATION; AREA CUO-CEO2 CATALYSTS; PREFERENTIAL OXIDATION; SELECTIVE OXIDATION; REDOX PROPERTIES; EXCESS H-2; HYDROGEN; SURFACE; CUO/CEO2; OXIDE;

D O I：

10.1007/s11244-009-9322-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A series of oxidised copper-ceria catalysts with varying copper loadings and prepared by two different methods (impregnation of ceria and coprecipitation of the two components within reverse microemulsions) have been examined with the aim of determining the nature of active entities for the two main (CO and H-2) competing oxidation reactions that take place during preferential oxidation of CO in H-2-rich streams over this type of catalysts. The analysis is mainly based on operando spectroscopic exploration by DRIFTS and XANES as well as in situ analysis by Raman. The results allow establishing a model of the catalytic behaviour of this type of catalysts which can provide keys to control their CO-PROX catalytic properties.

引用

页码：1425 / 1432

页数：8

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