CAS OpenIR
Mechanism of dichloromethane disproportionation over mesoporous TiO2 under low temperature
Deng, Yuzhou1,2; Peng, Shengpan1,2; Liu, Haidi1,3; Li, Shuangde1,3; Chen, Yunfa1,3
2019-04-01
Source PublicationFRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
ISSN2095-2201
Volume13Issue:2Pages:12
AbstractMesoporous TiO2 was synthesized via nonhydrolytic template-mediated sol-gel route. Catalytic degradation performance upon dichloromethane over as-prepared mesoporous TiO2, pure anatase and rutile were investigated respectively. Disproportionation took place over as-made mesoporous TiO2 and pure anatase under the presence of water. The mechanism of disproportionation was studied by in situ FTIR. The interaction between chloromethoxy species and bridge coordinated methylenes was the key step of disproportionation. Formate species and methoxy groups would be formed and further turned into carbon monoxide and methyl chloride. Anatase (001) played an important role for disproportionation in that water could be dissociated into surface hydroxyl groups on such structure. As a result, the consumed hydroxyl groups would be replenished. In addition, there was another competitive oxidation route governed by free hydroxyl radicals. In this route, chloromethoxy groups would be oxidized into formate species by hydroxyl radicals transfering from the surface of TiO2. The latter route would be more favorable at higher temperature. (c) Higher Education Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019
KeywordDichloromethane Disproportionation Mechanism Anatase (001) Water dissociation
DOI10.1007/s11783-019-1113-8
Language英语
WOS KeywordVOLATILE ORGANIC-COMPOUNDS ; CATALYTIC COMBUSTION ; MIXED-OXIDE ; PHOTOCATALYTIC DEGRADATION ; OXIDATION ; CHLOROBENZENE ; TRICHLOROETHYLENE ; PERFORMANCES ; CH2CL2 ; VOCS
Funding ProjectKey Program of the Chinese Academy of Sciences[ZDRW-ZS-2016-5-3] ; National Key Research and Development Program of China[2017YFC0211503]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationKey Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China
WOS IDWOS:000464615000001
PublisherHIGHER EDUCATION PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28264
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Yunfa
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Deng, Yuzhou,Peng, Shengpan,Liu, Haidi,et al. Mechanism of dichloromethane disproportionation over mesoporous TiO2 under low temperature[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2019,13(2):12.
APA Deng, Yuzhou,Peng, Shengpan,Liu, Haidi,Li, Shuangde,&Chen, Yunfa.(2019).Mechanism of dichloromethane disproportionation over mesoporous TiO2 under low temperature.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,13(2),12.
MLA Deng, Yuzhou,et al."Mechanism of dichloromethane disproportionation over mesoporous TiO2 under low temperature".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 13.2(2019):12.
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