Citation: LU Nan, WU Zhi-wei, LEI Li-jun, QIN Zhang-feng, ZHU Hua-qing, LUO Li, FAN Wei-bin, WANG Jian-guo. Catalytic combustion of lean methane over a core-shell structured Pd-Co₃O₄@SiO₂ catalyst[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(9): 1120-1127. shu

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

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

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

Corresponding author: WU Zhi-wei, QIN Zhang-feng,
Received Date: 9 March 2015
Available Online: 18 May 2015
Fund Project: 国家自然科学基金(21227002) (21227002) 中国科学院战略性先导科技专项(XDA07060300) (XDA07060300) 山西省科技攻关项目(MQ2014-11, MQ2014-11) (MQ2014-11, MQ2014-11) 山西省自然科学基金(2012021005-3)。 (2012021005-3)

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 CoO_x and PdO species inside the SiO₂ shell. Meanwhile, as the active Pd and CoO_x 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.
- Pd-Co₃O₄@SiO₂,
- lean methane,
- catalytic combustion,
- core-shell structure,
- thermal stability,
- self-assemble method
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Catalytic combustion of lean methane over a core-shell structured Pd-Co3O4@SiO2 catalyst

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通讯作者: 陈斌, bchen63@163.com

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