CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
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
2015
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
Volume176Pages:542—552
Subtype期刊文献
AbstractHerein, 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.
KeywordOxygen Storage Capacity Mixed-oxide Catalysts High-surface-area Low-temperature Raman-spectroscopy Total Oxidation Co Oxidation Composite Oxide Solid-solution Ch4 Oxidation
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24480
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
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.,...&Li, XG.(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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