文献类型：期刊文献

英文题名：Catalytic oxidation of vinyl chloride emission over LaMnO3 and LaB0.2Mn0.8O3 (B = Co, Ni, Fe) catalysts

作者：Zhang, Chuanhui[1,2,3];Wang, Chao[1,2];Zhan, Wangcheng[1,2];Guo, Yanglong[1,2];Guo, Yun[1,2];Lu, Guanzhong[1,2];Baylet, Alexandre[3];Giroir-Fendler, Anne[3]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[3]Univ Lyon 1, IRCELYON, CNRS, Inst Rech Catalyse & Environm Lyon,UMR 5256, F-69626 Villeurbanne, France

年份：2013

卷号：129

起止页码：509

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20130115869759);WOS:【SCI-EXPANDED(收录号:WOS:000312689500056)】；

基金：The work was financially supported by the National Basic Research Program of China (2010CB732300), the National High Technology Research and Development Program of China (2011AA03A406) and 111 Project (B08021). Thanks are also due to China Scholarship Council for the Joint-Training Scholarship Program with Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON) and the Universite Claude Bernard Lyon 1 (UCBL1).

语种：英文

外文关键词：CVOCs; Vinyl chloride; Catalytic oxidation; Perovskite; Reducibility; Adsorbed oxygen

摘要：The LaMnO3 and LaB0.2Mn0.8O3 (B = Co, Ni, Fe) perovskite-type oxides were prepared by the conventional co-precipitation method and studied as catalysts for the oxidation of vinyl chloride emission in the temperature range of 50-350 degrees C. Their physicochemical properties were characterized by ICP-AES, N-2 adsorption, XRD, H-2-TPR, O-2-TPD and XPS. Catalytic performances were evaluated for the oxidation of 1000 ppm of VC in air at a GHSV of 15,000 h(-1). The substituted LaB0.2Mn0.8O3 samples showed higher catalytic activity than pure LaMnO3. Characterization results revealed that the catalytic activity of the perovskite oxides was greatly related to the low-temperature reducibility of the B site and the amount of adsorbed oxygen species and vacancies on the surface. The surface adsorbed oxygen species played a key role in the catalytic reaction and oxygen vacancies promoted the oxygen mobility. A reaction mechanism of vinyl chloride oxidation over LaMnO3-based perovskite oxides was proposed. (C) 2012 Elsevier B.V. All rights reserved.