简介概要

Preparation and characterization of Cu-doped mesoporous CeO2 for CO oxidation

来源期刊:中南大学学报(英文版)2014年第2期

论文作者:TIAN Jun-jie(田俊杰) NA Wei(纳薇) WANG Hua(王华) GAO Wen-gui(高文桂)

文章页码:482 - 486

Key words:mesoporous CeO2; catalytic activity; CuO/CeO2; CO oxidation

Abstract: Mesoporous CeO2 was first synthesized by hydrothermal method, and then used to synthesize different contents of CuO)x/CeO2 (x: molar ratio of Cu to Ce) by deposition-precipitation method. These materials were characterized by X-ray diffraction (XRD), N2 adsorption and desorption, H2 temperature programmed reduction (H2-TPR) and O2 temperature programmed desorption (O2-TPD) to study the crystal structure, surface area, and the mechanism of CO oxidation. The results show that, on XRD patterns, no evidence of CuO diffraction peaks is present until Cu loading is increased to 20%. The BET surface area decreases noticeably with the increase of Cu content. Compared with other samples, the better reducibility and activity oxygen species of (CuO)10%/CeO2 coincide with its better catalytic activity.

详情信息展示

Preparation and characterization of Cu-doped mesoporous CeO2 for CO oxidation

TIAN Jun-jie(田俊杰)1, 2, 3, NA Wei(纳薇)1, 2, WANG Hua(王华)1, 2, GAO Wen-gui(高文桂)1, 2

(1. Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China;
2. State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization in
Yunnan Province, Kunming 650093, China;
3. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China)

Abstract:Mesoporous CeO2 was first synthesized by hydrothermal method, and then used to synthesize different contents of CuO)x/CeO2 (x: molar ratio of Cu to Ce) by deposition-precipitation method. These materials were characterized by X-ray diffraction (XRD), N2 adsorption and desorption, H2 temperature programmed reduction (H2-TPR) and O2 temperature programmed desorption (O2-TPD) to study the crystal structure, surface area, and the mechanism of CO oxidation. The results show that, on XRD patterns, no evidence of CuO diffraction peaks is present until Cu loading is increased to 20%. The BET surface area decreases noticeably with the increase of Cu content. Compared with other samples, the better reducibility and activity oxygen species of (CuO)10%/CeO2 coincide with its better catalytic activity.

Key words:mesoporous CeO2; catalytic activity; CuO/CeO2; CO oxidation

<上一页 1 下一页 >

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号