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]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, State key Lab green Chem Engn & Ind Catalysis, Shanghai 200237, Peoples R China

年份：2024

卷号：350

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20241215767212);WOS:【SCI-EXPANDED(收录号:WOS:001216171200001)】；

基金：This work was supported by the National Key Research and Development Program of China (2023YFC3707500, 2022YFB3504200) , the National Natural Science Foundation of China (U21A20326, 22106101) , the fund of the National Engineering Laboratory for Mobile Source Emission Control Technology (NELMS2020A05) , and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Catalytic combustion; CVOCs; Vinyl chloride; Ceria; Ru-O-Ce structure

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 degrees 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.