INVESTIGATION OF LA-3+-MODIFIED AL2O3-SUPPORTED CEO2

被引：26

作者：

GRAHAM, GW

SCHMITZ, PJ

USMEN, RK

MCCABE, RW

机构：

[1] Ford Motor Company, Dearborn, 48121-2053, MI, Mail Drop 3179, Bldg. SRL

来源：

CATALYSIS LETTERS | 1993年 / 17卷 / 1-2期

关键词：

LANTHANA-MODIFIED ALUMINA; ALUMINA-SUPPORTED CERIA; OXYGEN STORAGE; 3-WAY CATALYST; X-RAY PHOTOELECTRON SPECTROSCOPY;

D O I：

10.1007/BF00763940

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：

X-ray photoelectron spectroscopy measurements indicate that the Ce3+ fraction in Al2O3-supported CeO2 can be decreased by the incorporation of La3+. If La3+ is incorporated into the Al2O3 before CeO2 is added, a higher CeO2 dispersion and a greater range of reversible reducibility of the CeO2 may also be obtained. These changes offer potential for improvement in the oxygen storage capacity provided by CeO2 in three-way catalysts.

引用

页码：175 / 184

页数：10

共 15 条

[1] VALENCE FLUCTUATIONS IN NARROW-BAND OXIDES [J].