CeO2/CuO catalysts prepared by surfactant-template method for preferential CO oxidation in H2-rich stream

被引：0

作者：

Fan, Qi-Yuan ^{[1
]}

Bai, Xue ^{[1
]}

Zeng, Shang-Hong ^{[2
]}

机构：

[1] School of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China

[2] School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2014年 / 42卷 / 05期

关键词：

Catalyst activity - Catalytic oxidation - Copper oxides - Fluorspar - Oxygen vacancies - Particle size - Particle size analysis - Surface active agents - X ray diffraction;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A series of CeO2/CuO catalysts were prepared by surfactant-template method and characterized by high resolution transmission electron microscope (HRTEM), X-ray diffraction (XRD), temperature-programmed reduction (H2-TPR) and N2 sorption; their catalytic performance for preferential oxidation of CO (CO-PROX) in H2-rich stream was investigated. The results show that the 4 nm CeO2 particles with cubic fluorite structure are agglomerated into small clusters and dispersed on the bulk CuO; CeO2/CuO may belong to a type of reverse supported catalyst on the basis of particle size distribution. There are two kinds of active sites in the CeO2/CuO system, i.e. the CuO sites for CO chemisorption and the CeO2 sites supplying oxygen vacancies; the coexistence of two-kind surface sites on the contact interface is capable of promoting the preferential oxidation of CO.

引用

页码：603 / 608