文献类型：期刊文献

英文题名：Enhanced Ru-O-Ce Interaction by Solid Solution Structure of Ru-Cexzr1-Xo2 Catalysts for Efficient Catalytic Combustion of Vinyl Chloride

作者：Xie, Baocheng[1]; Wei, Zijian[1]; Ding, Min[1]; Gao, Meixingzi[1]; Wang, Li[1]; Zhan, Wangcheng[1]; Dai, Qiguang[1]; Guo, Yun[1]; Wang, Aiyong[1]; Guo, Yanglong[1]

机构：[1] State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20240008839)

语种：英文

外文关键词：Catalysis - Catalyst activity - Catalyst poisoning - Chlorine - Chlorine compounds - Combustion - Molar ratio - Precipitation (chemical) - Solid solutions

摘要：Ru-CexZr1-xO2 catalysts, prepared by stepwise precipitation method, were investigated for the catalytic combustion of vinyl chloride (VC). Ru-O-Ce is a highly reactive structure in the redox ability. The Ce-O-Zr solid solution structure enhances the strong metal-support-interaction (SMSI) between Ru and Ce, thereby increasing the content of Ru-O-Ce structure, which can be modulated by the molar ratio of Ce/(Ce + Zr) in the catalyst. Zr doping also enhances the surface acid sites. In situ DRIFTS reveals that Ru-CexZr1-xO2 catalyst avoids chlorine poisoning, and Ru-O-Ce provides sufficient chemically adsorbed oxygen species (CAOS) to promote formation of formate intermediate species. Ru-Ce0.5Zr0.5O2 catalyst exhibited the best catalytic performance with T90 of 227 °C under the reaction conditions of 1000 ppm VC and WHSV of 30,000 mL·g-1·h-1. Moreover, Ru-Ce0.5Zr0.5O2 catalyst exhibited the superior resistance to high temperature, chlorine poisoning and water, and excellent catalytic activity for the catalytic combustion of various VOCs. ? 2023, The Authors. All rights reserved.