Effects of the structure of Ce-Cu catalysts on the catalytic combustion of toluene in air
发布时间：2024-10-10
点击次数：
- 影响因子：
- 5.1
- DOI码：
- 10.1016/j.ceramint.2012.10.199
- 所属单位：
- 重庆工商大学
- 教研室：
- 化学工程系
- 发表刊物：
- ceramics international
- 项目来源：
- 重庆市科技局，重庆工商大学，催化基础国家重点实验室
- 关键字：
- Ce–Cu composite oxide catalyst; Ordered mesoporous structure; Hard-template method; Complex method
- 摘要：
- Ce-Cu composite oxide catalysts were prepared by a hard-template method (CeCu-HT) and a complex method (CeCu-CA). The prepared CeCu 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 CeCu composite oxide catalysts were also investigated by the catalytic combustion of toluene in air. XRD results showed that the synthesized CeCu composite oxide catalysts had different phase components and crystallinities but similar CeO2CuO 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 CeCu composite oxide catalysts prepared by different methods can be attributed to their discrepant compositions and structures.
- 第一作者：
- 周桂林
- 合写作者：
- 兰海,杨晓青,杜琴香,谢红梅,傅敏
- 论文类型：
- 源刊论文
- 通讯作者：
- 周桂林
- 论文编号：
- DVD1A82K4L5PKKZ0AP5S3W7ZGYNHY8HS
- 学科门类：
- 工学
- 一级学科：
- 化学工程与技术
- 文献类型：
- Journal Article
- 卷号：
- 39
- 期号：
- 4
- 页面范围：
- 3677–3683
- 是否译文：
- 否
- 发表时间：
- 2013-04-01