CAS OpenIR  > 中科院上海应用物理研究所2011-2019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
2015
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
Volume168Pages:141—155
Subtype期刊文献
AbstractCeO2 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,
KeywordVolatile 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
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24408
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
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.
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