Catalytic combustion of lean methane over a core-shell structured Pd-Co3O4@SiO2 catalyst

被引：0

作者：

Lu, Nan ^{[1
,2
]}

Wu, Zhi-Wei ^{[1
]}

Lei, Li-Jun ^{[1
,2
]}

Qin, Zhang-Feng ^{[1
]}

Zhu, Hua-Qing ^{[1
]}

Luo, Li ^{[1
,2
]}

Fan, Wei-Bin ^{[1
]}

Wang, Jian-Guo ^{[1
]}

机构：

[1] State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan,030001, China

[2] University of Chinese Academy of Sciences, Beijing,100049, China

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2015年 / 43卷 / 09期

关键词：

Catalysis - Catalyst activity - Cobalt compounds - Combustion - Methane - Shells (structures) - Sintering - Thermodynamic stability;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A core-shell structured Pd-Co3O4@SiO2 catalyst was prepared by a simple self-assemble method and used in lean methane combustion. The results of catalytic tests indicate that the core-shell Pd-Co3O4@SiO2 catalyst exhibits high activity in lean methane combustion and superior stability at high temperature. The results of TEM, XRD, and H2-TPR characterization suggest that the high activity of Pd-Co3O4@SiO2 is mainly ascribed to the strong interaction between CoOx and PdO species inside the SiO2 shell. Meanwhile, as the active Pd and CoOx species in Pd-Co3O4@SiO2 are enshielded in the core-shell structure, which is effective to protect the active phase from sintering at high temperature, the core-shell structured Pd-Co3O4@SiO2 catalyst is thus far superior in thermal stability against high temperature to the supported Pd/Co3O4@SiO2 and Pd/Co3O4-SiO2 catalysts. ©, 2015, Science Press. All right reserved.

引用

页码：1120 / 1127