文献类型：期刊文献

英文题名：Controlled synthesis of highly active mesoporous Co₃O₄ polycrystals for low temperature CO oxidation

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

年份：2012

卷号：111

起止页码：461

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000300528500053)】；

基金：This study was supported by National Nature Science Foundation of China, Grant no. 21073059, Program for Changjiang Scholars and Innovative Research Team in University (IRT0825) and the Fundamental Research Funds for the Central Universities no. WK1013001.

语种：英文

外文关键词：Cobalt oxide; Catalyst; Mesoporous materials; CO oxidation

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.