文献类型：期刊文献

英文题名：An efficient SnyMn1-yOx composite oxide catalyst for catalytic combustion of it 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]East China Univ Sci & Technol, Sch Chem & Mol Engn, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]Qingdao Univ, Coll Mat Sci & Engn, Inst Mat Energy & Environm, Qingdao 266071, Shandong, Peoples R China

年份：2019

卷号：255

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000474501500008)】；

基金：This work was supported by the National Key Research and Development Program of China (2016YFC0204300), the National Natural Science Foundation of China (21577035), the Commission of Science and Technology of Shanghai Municipality (15DZ1205305), and the Fundamental Research Funds for the Central Universities (222201717003).

语种：英文

外文关键词：Catalytic combustion; Vinyl chloride; Solid solution; Manganese oxides; Tin oxides

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 Sn(y)Mn(1-y)O(x )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 degrees C.