Effect of Ce addition on Cr/gamma-Al2O3 catalysts for methane catalytic combustion

Indexed by:

Journal Article

First Author:

Yuan, Xingzhou

Correspondence Author:

Zhang, YC (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dept Catalysis Chem & Engn, Sch Chem Engn, Dalian, Peoples R China.

Co-author:

Chen, Heng,Zhang, Yongchun,Chen, Shaoyun

Date of Publication:

2013-05-05

Journal:

CATALYSIS COMMUNICATIONS

Included Journals:

Scopus、EI、SCIE

Document Type:

J

Volume:

35

Page Number:

36-39

ISSN:

1566-7367

Key Words:

Methane; Chromium-based catalysts; Catalytic combustion; Catalytic cycle

Abstract:

Cerium modified and chromium-based catalysts using nano-gamma-Al2O3 as the carrier were prepared via incipient wetness impregnation method and investigated for the catalytic combustion of methane (CH4). The Cr-based catalysts promoted with 3 wt.% Ce displayed the most effective catalytic activity among all catalysts investigated. In addition, Ce significantly improved the catalytic performance of CH4 combustion by increasing the amount of reaction site [CrO4](ads) species on the surface of Cr-based catalysts. Introduction of Ce content also restrained the deactivation of catalysts at high calcination temperature. Cr-based catalysts modified with cerium seem to be a promising cheap and low-temperature catalyst for CH4 combustion. (C) 2013 Published by Elsevier B.V.