文献类型：期刊文献

英文题名：Polymer-Directed Self-Assembly Synthesis of Tin-Titanium-Manganese Compounded Oxides with Enhanced Activity and Sulfur Tolerance for Nh3-Scr

作者：Zhu, Yujie[1]; Qu, Pengyang[1]; Qiu, Liming[1]; Wang, Jitong[1,2]; Lian, Cheng[1]; Ma, Cheng[1]; Jia, Xianfeng[1,3]; Qiao, Wenming[1,2]; Ling, Licheng[1,2]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Key Laboratory of Specially Functional Polymeric Materials and Related Technology, East China University of Science and Technology, Shanghai, 200237, China; [3] Department of Chemistry, Tangshan Normal University, Tangshan, 063000, China

年份：2022

外文期刊名：SSRN

收录：EI(收录号：20220165064)

语种：英文

外文关键词：Ammonia - Catalyst activity - Catalyst selectivity - Self assembly - Sulfur - Tin oxides - Titanium dioxide

摘要：The majority of NH 3 -SCR catalysts including MnO x and TiO 2 -MnO x still exist inferior activity, low selectivity, and poor sulfur resistance due to unbefitting redox and adsorption capacities. Novel tin-titanium-manganese ternary compounded metal oxides catalysts with improved activity and sulfur tolerance are synthesized through a unique polymer-directed self-assembly method for the first time. The reducibility, NH 3 , and NO x adsorption ability of TiO 2 -MnO x catalyst are promoted by the incorporation of tin, which contributes to elevating the catalytic activity. More surface chemisorbed oxygen species are formed over Sn-TiO 2 -MnO x , which is conducive to the generation of NO 2 , thus shifting the reaction process towards fast NH 3 -SCR to improve the activity. Moreover, the introduction of Sn could effectively inhibit the electron transfer between SO 2 and Mn to suppress the generation of manganese sulfate, thus protecting the active sites. This work develops an enhanced strategy to design an environmental-friendly catalyst with superior catalytic activity and SO 2 resistance. ? 2022, The Authors. All rights reserved.