Catalytic total oxidation of 1,2-dichloroethane over highly dispersed vanadia supported on CeO2 nanobelts

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Catalytic total oxidation of 1,2-dichloroethane over highly dispersed vanadia supported on CeO2 nanobelts
	Dai, QG; Bai, SX; Li, H; Liu, W; Wang, XY; Lu, GZ
刊名	APPLIED CATALYSIS B-ENVIRONMENTAL
	2015
卷号	168 页码:141—155
关键词	VOLATILE ORGANIC-COMPOUNDS DOPED CERIA CATALYSTS SOLID-STATE REACTION GAS SHIFT REACTION V2O5/TIO2 CATALYSTS V2O5-WO3/TIO2 CATALYST ZEOLITE CATALYSTS OXIDE CATALYSTS DEEP OXIDATION FLUE-GAS
英文摘要	CeO2 nanobelts were synthesized via a facile aqueous-phase precipitation route under mild conditions (template-free and non-hydrothermal), and then the highly dispersed vanadia catalysts with a wide range of VOx loadings were prepared by a conventional incipient-wetness impregnation method. The target VOx/CeO2 catalysts were characterized in detail and used in catalytic combustion of 1,2-dichloroethane (DCE). The results revealed that the monolayer dispersed VOx (6.0%VOx/CeO2) exhibited the most outstanding initial and stable activities, however, the main product containing carbon was CO2 not desired CO2. A reaction mechanism of DCE total oxidation was proposed based on the study of TPSR and in situ FTIR. The first step of this mechanism was considered to be a dissociative adsorption of C-Cl bonds on Lewis acid sites (such as Ce4+/3+, V5+/4+ or Ce3+-O2--V5+) via Cl abstraction, and then the dissociated DCE can be oxidized directly to CO2 by surface active oxygen species over pure CeO2. Whereas, over VOx/CeO2 catalysts, the formation of intermediate acetaldehyde was a key step via C-H bond activation and hydrogen transfer on VOx species, subsequently, partially oxidized to CO by the lattice oxygen of VOx. (C) 2014 Elsevier B.V. All rights reserved,
收录类别	SCI
语种	英语
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/24408]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Dai, QG,Bai, SX,Li, H,et al. Catalytic total oxidation of 1,2-dichloroethane over highly dispersed vanadia supported on CeO2 nanobelts[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2015,168:141—155.
APA	Dai, QG,Bai, SX,Li, H,Liu, W,Wang, XY,&Lu, GZ.(2015).Catalytic total oxidation of 1,2-dichloroethane over highly dispersed vanadia supported on CeO2 nanobelts.APPLIED CATALYSIS B-ENVIRONMENTAL,168,141—155.
MLA	Dai, QG,et al."Catalytic total oxidation of 1,2-dichloroethane over highly dispersed vanadia supported on CeO2 nanobelts".APPLIED CATALYSIS B-ENVIRONMENTAL 168(2015):141—155.