Insight into the improvement effect of the Ce doping into the SnO2 catalyst for the catalytic combustion of methane

	Insight into the improvement effect of the Ce doping into the SnO2 catalyst for the catalytic combustion of methane
	Liu, C; Xian, H; Jiang, Z; Wang, LH; Zhang, J; Zheng, LR; Tan, YS; Li, XG; Zhang J(张静); Zheng LR(郑黎荣)
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2015
卷号	176 页码:542-552
关键词	Ce dopant SnO2 catalyst Catalytic combustion of methane Surface Sn4+ cations Mars-van Krevelen model
英文摘要	Herein, we report the performance of the catalytic combustion of methane over the Ce-doped SnO2 catalysts. Doping with Ce increases the surface areas, decreases the crystallite sizes, and activates both the surface metal cations and surface oxygen species. Upon methane combustion, the surface Sn4+ cations are active sites, and the surface lattice oxygen plays an important role, as well. Kinetics results suggest that the activation energy (E-a) and pre-exponential factor (A) are determined by the reducibility and the area-specific quantity of the surface Sn4+ cations, respectively. The Sn0.7Ce0.3O2 catalyst exhibits the highest area-specific rate because of its lowest E-a and relatively bigger A values. Its turnover frequency is five times higher, as compared with the SnO2. The reaction pathways upon the Sn-rich catalysts (SnO2 phase) follow the Mars-van Krevelen model, while they become more complex upon the Ce-rich ones (CeO2 phase). Additionally, these SnO2-based catalysts display the high water resistance. (C) 2015 Elsevier B.V. All rights reserved.
学科主题	Chemistry; Engineering
类目[WOS]	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
收录类别	SCI ; EI
WOS记录号	WOS:000356549200054
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228386]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Liu, C,Xian, H,Jiang, Z,et al. Insight into the improvement effect of the Ce doping into the SnO2 catalyst for the catalytic combustion of methane[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2015,176:542-552.
APA	Liu, C.,Xian, H.,Jiang, Z.,Wang, LH.,Zhang, J.,...&郑黎荣.(2015).Insight into the improvement effect of the Ce doping into the SnO2 catalyst for the catalytic combustion of methane.APPLIED CATALYSIS B-ENVIRONMENTAL,176,542-552.
MLA	Liu, C,et al."Insight into the improvement effect of the Ce doping into the SnO2 catalyst for the catalytic combustion of methane".APPLIED CATALYSIS B-ENVIRONMENTAL 176(2015):542-552.