Gold catalysts supported on CeO2 and CeO2-Al2O3 for NOx reduction by CO

被引：111

作者：

Ilieva, L

Pantaleo, G

Ivanov, I

Venezia, AM

Andreeva, D

机构：

[1] Bulgarian Acad Sci, Inst Catalysis, Acad G Bonchev, BU-1113 Sofia, Bulgaria

[2] Univ Palermo, Dipartimento Chim Inorgan & Analit, I-90128 Palermo, Italy

[3] CNR, Ist Mat Nanostrutturati, I-90146 Palermo, Italy

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2006年 / 65卷 / 1-2期

关键词：

gold; ceria; ceria-alumina; NOx reduction by CO; XRD; TPR; XPS; Raman spectroscopy;

D O I：

10.1016/j.apcatb.2005.12.014

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：

The reduction of NO, by CO was studied over gold catalyst supported on ceria and ceria-lumina. The mixed supports with different CeO2/Al2O3 ratios were prepared by co-precipitation. The catalysts were characterized by means of XRD. TPR, XPS and Raman spectroscopy. The addition of alumina led to a slight enlargement of the gold particles, while the ceria particle size was decreased. Deeper oxygen vacancies formation in the presence of alumina was detected by TPR, XPS and Raman spectroscopy, compared to the pure ceria support. The samples exhibited a high and stable activity and 100% selectivity towards N-2 was reached at 200 degrees C. (c) 2006 Published by Elsevier B.V.

引用

页码：101 / 109

页数：9

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[21] TEMPERATURE-PROGRAMMED REDUCTION - PARAMETRIC SENSITIVITY AND ESTIMATION OF KINETIC-PARAMETERS [J].