文献类型：期刊文献

英文题名：Preparation of Highly Selective RuNb/Co3O4-Supported Catalysts and Their Catalytic Combustion Performance for 1,2-Dichloroethane

作者：Liu, Litao[1]; Ding, Min[1]; Zhan, Wangcheng[1]; Wang, Li[1]; Dai, Qiguang[1]; Guo, Yun[1]; Guo, Yanglong[1]; Wang, Aiyong[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：2025

卷号：64

期号：1

起止页码：250

外文期刊名：Industrial and Engineering Chemistry Research

收录：EI(收录号：20245217571391)

语种：英文

外文关键词：Carbon monoxide - Catalytic oxidation - Chlorination - Chlorine compounds - Niobium compounds - Ruthenium compounds

摘要：Ru-modified Co3O4 catalysts have attracted increasing attention in the catalytic combustion of chlorinated volatile organic compounds (CVOCs) due to the8ir excellent activity and better resistance to chlorine poisoning. However, the formation of various and toxic polychlorinated byproducts is still a critical problem to be solved in the process of catalytic combustion of CVOCs. Herein, a series of RuXNb/Co catalysts with different Nb to Co3O4 mass ratios were synthesized and investigated for their performance in the catalytic combustion of 1,2-dichloroethane (EDC). Consequently, the Ru/Co catalyst exhibited excellent EDC elimination activity with a temperature of conversion of 90% (T90) at 255 °C. In addition, RuXNb/Co catalysts significantly decreased the generation of byproducts, especially the polychlorinated byproducts, and achieved high selectivity of products during the EDC oxidation. It was further discovered that the loading of Ru species could obviously activate surface lattice oxygen and enhance the reducibility of Co3O4 through the strong interaction between Ru species and Co3O4. The introduction of Nb species provided appropriate acid sites on the catalyst surface, which was favorable for the adsorption of EDC and activation of C-Cl bonds. The results indicated that a unique reflux method and niobium modification provided a strategy for designing CVOC oxidation catalysts with high activity and product selectivity. ? 2024 American Chemical Society.