文献类型：期刊文献

英文题名：The effect of A-site substitution by Sr, Mg and Ce on the catalytic performance of LaMnO3 catalysts for the oxidation of vinyl chloride emission

作者：Zhang, Chuanhui[1,2,3];Hua, Wenchao[1,2];Wang, Chao[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, CNRS, UMR 5256, IRCELYON,Inst Rech Catalyse & Environm Lyon, F-69626 Villeurbanne, France

年份：2013

卷号：134

起止页码：310

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20130816038802);WOS:【SCI-EXPANDED(收录号:WOS:000316583500036)】；

基金：This 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). The authors gratefully acknowledge the 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：Vinyl chloride; Catalytic oxidation; Perovskite catalyst; Reducibility; Adsorbed oxygen

摘要：Catalytic oxidation of vinyl chloride (VC) emission was carried out over LaMnO3 and La(0.8)A(0.2)MnO(3) (A = Sr, Mg and Ce) perovskite oxides synthesized via co-precipitation method. Numerous characterization techniques were performed to investigate the relationship between the catalytic performance and its physicochemical properties. It was found that the partial substitution of lanthanum by cerium and magnesium had a positive effect on the catalytic performance for VC oxidation, whereas strontium involved a negative effect. Under the reaction conditions (VC concentration = 1000 ppm, GHSV = 15,000 h(-1)), the overall catalyst ranking in terms of the catalytic activity from the best to the worst performance was La0.8Ce0.2MnO3 > La0.8Mg0.2MnO3 > LaMnO3 > La0.8Sr0.2MnO3 with regard to the temperature of T-50 and T-90. The Ce-doped perovskite catalyst showed the optimum catalytic performance due to its higher specific surface area and its ability to promote the low-temperature reducibility. Moreover, as the active species, the increased surface adsorbed oxygen was also responsible for the enhancement of the catalytic performance. (C) 2013 Elsevier B.V. All rights reserved.