文献类型：期刊文献

英文题名：Selective Adsorption of Chlorine Species on RuO2 Sites for Efficient Elimination of Vinyl Chloride on the Ru/SnO2 Catalyst

作者：Ding, Min[1];Zhang, Yan[1];Guo, Yanglong[1];Hua, Wenchao[1];Yang, Jing[1];Wang, Li[1];Guo, Yun[1];Dai, Qiguang[1];Wang, Aiyong[1];Zhan, Wangcheng[1,2]

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;[2]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China

年份：2025

卷号：59

期号：1

起止页码：956

外文期刊名：ENVIRONMENTAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20250217652733);WOS:【SCI-EXPANDED(收录号:WOS:001391586800001)】；

基金：This work was supported by the National Key Research and Development Program of China (2023YFC3707500 and 2022YFB3504200), the National Natural Science Foundation of China (U21A20326, 22376061, and 22076047), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：catalytic combustion; chlorinated volatile organic compounds; RuO2 particles; lattice matching; monolithic catalyst

摘要：The main bottleneck in the catalytic combustion of chlorinated volatile organic compounds (CVOCs) is deactivation and the production of chlorine-containing byproducts originating from the chlorine species deposited on the catalyst. Herein, Ru supported on SnO2 (Ru/SnO2 ) was prepared with the lattice matching principle. As RuO2 and SnO2 are both rutile phases, Ru species were present as highly dispersed RuO2 particles on the Ru/SnO2 catalyst. These particles adsorbed chlorine species with greater efficiency during the CVOCs combustion, thereby protecting the oxygen vacancies. Therefore, the double sites, oxygen vacancy to oxidize and RuO2 to adsorb chlorine species, on the Ru/SnO2 catalyst led to a notable enhancement in activity, stability, and byproduct selectivity. In contrast, the high dispersion of Ru species on the CeO2 support, as the typical catalyst for chlorinated hydrocarbon combustion, gave rise to a predominantly Ru-O-Ce structure. This structure did not prevent the adsorption of chlorine species on the oxygen vacancies, resulting in deactivation at low temperatures and an increased polychlorinated byproduct concentration. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) further corroborated the variation in the adsorption sites of chlorine species on the two catalysts. This work provides a new strategy for designing efficient Ru-based catalysts for catalytic CVOCs combustion.