Effect of the doped alkaline-earth metals on the catalytic performance of CeO2

被引：0

作者：

Li, Ping ^{[1
]}

Duan, Huijuan ^{[2
]}

机构：

[1] Institute of Environmental Science, Shanxi University, Taiyuan,Shanxi,030006, China

[2] Department of Applied Chemistry, Taiyuan University of Technology, Taiyuan,Shanxi,030024, China

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2016年 / 35卷 / 11期

关键词：

Alkaline earth metals - Magnesia - Barium compounds - Particle size;

D O I：

10.16085/j.issn.1000-6613.2016.11.022

中图分类号：

学科分类号：

摘要：

Nano-CeO2(20nm)was prepared by hydrothermal method,and then alkaline-earth metal oxides(MgO, CaO and BaO)of different concentrations were introduced into the nano-CeO2. The catalytic results showed that the doping of these three alkaline-earth metal oxides all had negative effects on the catalytic performance of nano-CeO2. In addition,the prepared nano-CeO2 were characterized with TEM,XRD,BET,XPS and TPD. The results show that a small amount of doped alkaline-earth metal oxideswere in the form of disorder and they couldn't lead to the lattice deformation and showed little effects on the morphology,particle size and textural properties,but they had great effect on the ratio of Ce(IV)/Ce(III) as well as the amount of the acid and base sites. In addition,high ratio of Ce(IV)/Ce(III) and a large amount of acid and base sites are essential for the catalytic performance of nano-CeO2. © 2016, Chemical Industry Press. All right reserved.

引用

页码：3529 / 3535