文献类型：期刊文献

英文题名：Catalytic oxidation of vinyl chloride emissions over Co-Ce composite oxide catalysts

作者：Wang, Chao[1,2];Zhang, Chuanhui[1];Hua, Wenchao[1];Guo, Yanglong[1];Lu, Guanzhong[1];Gil, Sonia[2];Giroir-Fendler, Anne[2]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Univ Lyon 1, CNRS, UMR 5256, IRCELYON, 2 Ave Albert Einstein, F-69626 Villeurbanne, France

年份：2017

卷号：315

起止页码：392

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20170503292280);WOS:【SCI-EXPANDED(收录号:WOS:000395212300040)】；

基金：This work was financially supported by the National Key Research and Development Program of China (2016YFC204300), the National Natural Science Foundation of China (21577035), the Commission of Science and Technology of Shanghai Municipality (15DZ1205305), 111 Project (B08021) and "Region Auvergne Rhone Alpes" (Coopera project 113955/2015). The contribution of the joint Ph.D program between the China Scholarship Council and the Institute de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), Centre National de la Recherche Scientifique (CNRS) and Universite Claude Bernard Lyon 1 (UCBL1) are also acknowledged.

语种：英文

外文关键词：Catalytic oxidation; Vinyl chloride; Co-Ce composite oxides

摘要：A series of Co-Ce composite oxide catalysts with different molar ratio were prepared by the citrate sol-gel method and evaluated for the catalytic oxidation of vinyl chloride present in air, which was selected as a model reaction for chlorinated VOCs abatement from industrial exhaust. Numerous of characterization techniques including XRD, N-2 sorption, Raman, H-2-TPR, O-2-TPD, NH3-TPD, XPS and HR-TEM were used to evaluate the influence of the physicochemical properties on the catalytic oxidation of 1000 ppm of vinyl chloride at a GHSV of 15,000 h(-1). The presence of cerium in the cobalt oxides modified the redox properties and the chemical states of the Co-Ce composite oxide catalysts, increasing the presence of Co2+ species, the oxygen vacancies, and the oxygen mobility. Among the Co-Ce composite oxide catalysts, the one with a Co/(Ce + Co) molar ratio at 0.7 presented the highest catalytic activity and stability for the oxidation of vinyl chloride, which was related to the synergetic effect derived from the high reactivity on Co2+ sites and its further oxidation by surface active oxygen species. (C) 2017 Elsevier B.V. All rights reserved.