Impact Factor:

5.1

DOI number:

10.1016/j.ceramint.2012.10.199

Affiliation of Author(s):

重庆工商大学

Teaching and Research Group:

化学工程系

Journal:

ceramics international

Funded by:

重庆市科技局，重庆工商大学，催化基础国家重点实验室

Key Words:

Ce–Cu composite oxide catalyst; Ordered mesoporous structure; Hard-template method; Complex method

Abstract:

Ce-Cu composite oxide catalysts were prepared by a hard-template method (CeCu-HT) and a complex method (CeCu-CA). The prepared CeCu composite oxide catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer–Emmett–Teller (BET) analyses. The catalytic properties of the prepared CeCu composite oxide catalysts were also investigated by the catalytic combustion of toluene in air. XRD results showed that the synthesized CeCu composite oxide catalysts had different phase components and crystallinities but similar CeO2CuO solid solution phases. Low-angle XRD, TEM, and BET results indicated that the prepared CeCu-HT catalyst had a developed ordered mesoporous structure and a large specific surface area of 206.1 m2 g−1. Toluene catalytic combustion results indicated that the CeCu-HT catalyst had higher toluene catalytic combustion activity in air than the CeCu-CA catalyst. The minimum reaction temperature at which toluene conversion exceeded 90% for toluene catalytic combustion on the CeCu-HT catalyst was 225 °C. The toluene catalytic combustion conversion on the CeCu-HT catalyst at 240 °C exceeded 99.3% with decreased toluene concentration in air to below 70 ppm. On the other hand, the toluene catalytic combustion conversion on the CeCu-CA catalyst was only 92% even when the reaction temperature reached 280 °C. The differences between the toluene catalytic combustion performances of the CeCu composite oxide catalysts prepared by different methods can be attributed to their discrepant compositions and structures.

First Author:

Guilin Zhou

Co-author:

兰海,杨晓青,杜琴香,XHM,傅敏

Indexed by:

源刊论文

Correspondence Author:

周桂林

Document Code:

DVD1A82K4L5PKKZ0AP5S3W7ZGYNHY8HS

Discipline:

Engineering

First-Level Discipline:

Chemical Engineering and Technology

Document Type:

Journal Article

Volume:

39

Issue:

4

Page Number:

3677–3683

Translation or Not:

no

Date of Publication:

2013-04-01

Links to published journals:

https://doi.org/10.1016/j.ceramint.2012.10.199