Yuzhou Deng1; Shengpan Peng1; Haidi Liu1; Shuangde Li1; Yunfa Chen1
Source Publication中国环境科学与工程前沿英文版
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.
Document Type期刊论文
Affiliation1.State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences
3.Center for Excellence in Regional Atmospheric Environment,Institute of Urban Environment,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Yuzhou Deng,Shengpan Peng,Haidi Liu,et al. mechanismofdichloromethanedisproportionationovermesoporoustio2underlowtemperature[J]. 中国环境科学与工程前沿英文版,2019,013(002):12.
APA Yuzhou Deng,Shengpan Peng,Haidi Liu,Shuangde Li,&Yunfa Chen.(2019).mechanismofdichloromethanedisproportionationovermesoporoustio2underlowtemperature.中国环境科学与工程前沿英文版,013(002),12.
MLA Yuzhou Deng,et al."mechanismofdichloromethanedisproportionationovermesoporoustio2underlowtemperature".中国环境科学与工程前沿英文版 013.002(2019):12.
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