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
学科分类Chemistry; Engineering
DOI10.1016/j.apcatb.2015.04.042
文章类型Article
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.
类目[WOS]Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
收录类别SCI ; EI
WOS记录号WOS:000356549200054
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228386
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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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.
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