Reduction-oxidation pretreatment enhanced catalytic performance of Co3O4/Al2O3 over CO oxidation

被引：29

作者：

Yang, Jie ^{[1
]}

Guo, Jia ^{[1
]}

Wang, Yibo ^{[1
]}

Wang, Tao ^{[1
]}

Gu, Jing ^{[1
]}

Peng, Luming ^{[1
]}

Xue, Nianhua ^{[1
]}

Zhu, Yan ^{[1
]}

Guo, Xuefeng ^{[1
]}

Ding, Weiping ^{[1
]}

机构：

[1] Nanjing Univ, Key Lab Mesoscop Chem, Sch Chem & Chem Engn, Nanjing 210093, Jiangsu, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2018年 / 453卷

基金：

中国国家自然科学基金;

关键词：

Reduction-oxidation pretreatment; CO oxidation; Surface reconstruction; Co3O4/Al2O3; LOW-TEMPERATURE; CARBON-MONOXIDE; OXIDE CATALYST; IN-SITU; CO3O4; SURFACES; BEHAVIOR; ORIGIN; OXYGEN; SIZE;

D O I：

10.1016/j.apsusc.2018.05.103

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 present work investigated the effect of reduction-oxidation(R-O) pretreatment on the CO oxidation activity of Co3O4/Al2O3 catalyst. After the reduction-oxidation treatment, the crystalline size of Co3O4 supported on the Al2O3 decreased and it exposed more Co3+, resulting in the improvement of CO oxidation activity. Compared with the as-prepared conventional Co3O4/Al2O3 catalyst, the Co3O4/Al2O3-R-O catalyst is easy to be reduced at lower temperature. The surface reconstruction occurred during the reduction-oxidation pretreatment accounting for the improvement of the catalytic activity. This study reveals the importance of R-O pretreatment as a strategy for the improvement of supported metal oxide catalyst with advanced catalytic performance.

引用

页码：330 / 335

页数：6

共 39 条

[1] Selective CO oxidation over CuO-CeO2 catalysts prepared via the urea-nitrate combustion method [J].