文献类型：期刊文献

英文题名：An efficient SnyMn1-yOx composite oxide catalyst for catalytic combustion of vinyl chloride emissions

作者：Hua, Wenchao[1]; Zhang, Chuanhui[2]; Guo, Yanglong[1]; Chai, Guangtao[1]; Wang, Chao[2]; Guo, Yun[1]; Wang, Li[1]; Wang, Yunsong[1]; Zhan, Wangcheng[1]

机构：[1] Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China

年份：2019

卷号：255

外文期刊名：Applied Catalysis B: Environmental

收录：EI(收录号：20192407047140)

语种：英文

外文关键词：Molar ratio - Catalyst activity - Precipitation (chemical) - Volatile organic compounds - Combustion - Tin oxides - Catalysis - Manganese oxide - Catalytic oxidation - Catalyst poisoning

摘要：A series of SnyMn1-yOx composite oxide catalysts with different Sn/Mn molar ratios (y = 1.0, 0.8, 0.6, 0.3 and 0) were prepared by a co-precipitation method. The catalysts were investigated for the catalytic combustion of vinyl chloride (VC), which is a typical chlorinated volatile organic compound (CVOC). It is found that the existence of Sn-Mn-O solid solution structure over SnyMn1-yOx catalysts can increase the specific surface area and tune the valence state of Mn and the surface properties. As a result, the redox property and the ability of adsorbing oxygen species of SnyMn1-yOx catalysts are enhanced. Meanwhile, more weak and medium acid sites are present on the catalyst surface. Under the synergetic effects of these above-mentioned factors, the catalytic activity of SnyMn1-yOx catalyst for VC oxidation is significantly improved compared with pure SnOx and MnOx catalysts. Moreover, the Sn/Mn molar ratio significantly affects the catalytic activity of SnyMn1-yOx catalysts, among which Sn0.6Mn0.4Ox catalyst possesses the best catalytic activity and excellent resistance to Cl poisoning and water-resisting ability. It can retain VC conversion of 100% without any chlorinated byproducts for 100 h at the reaction temperature of 340 °C. ? 2019 Elsevier B.V.