Controlled synthesis of highly active mesoporous Co3O4 polycrystals for low temperature CO oxidation

被引：137

作者：

Feng, Yingjun ^{[1
]}

Li, Liang ^{[1
]}

Niu, Shufan ^{[1
]}

Qu, Yan ^{[1
]}

Zhang, Qian ^{[1
]}

Li, Yongsheng ^{[1
]}

Zhao, Wenru ^{[1
]}

Li, Hua ^{[1
]}

Shi, Jianlin ^{[1
,2
]}

机构：

[1] E China Univ Sci & Technol, Sch Mat Sci & Engn, Lab Adv Funct Mat, Shanghai 200237, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2012年 / 111卷

关键词：

Cobalt oxide; Catalyst; Mesoporous materials; CO oxidation; GOLD CATALYSTS; MANGANESE; SUPPORT; OXYGEN; WATER;

D O I：

10.1016/j.apcatb.2011.10.035

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：

Polycrystalline mesoporous Co3O4 has been successfully fabricated using a simple but efficient controlled thermal decomposition approach and their catalytic activities for low temperature CO oxidation were evaluated. In such a synthesis, micrometer-sized polyhedral cobalt oxalate crystals were first prepared and used as precursor. Mesoporosity was then generated via the pyrolysis of the cobalt oxalate precursor and the resultant nano-sized Co3O4 crystallites connected together to form mesoporous structure within the original micrometer-sized particles. The as-prepared material by calcination at 300 degrees C at a heating rate of 0.5 degrees C/min possessed high surface area and showed extraordinarily high catalytic activity for low temperature CO oxidation, the full CO conversion can be achieved at as low as -70 degrees C. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：461 / 466

页数：6

共 21 条

[1] Characterization and tests of planar Co3O4 model catalysts prepared by chemical vapor deposition [J].