Influence of surface acidity and chemical valence on low temperature activity over Pt-HSiW/CeO_(2) for catalytic combustion of chlorobenzene

作     者：Zhongxian Song Zepeng Liu Xuejun Zhang Yanli Mao Wei Liu Chunxiang Gao Haiyang Li Xia Zhang Changrui Han Zhenzhen Huang Zhongxian Song;Zepeng Liu;Xuejun Zhang;Yanli Mao;Wei Liu;Chunxiang Gao;Haiyang Li;Xia Zhang;Changrui Han;Zhenzhen Huang

作者机构：Key Laboratory of Carbon Emission Reduction and Combined Air Pollution Control TechnologyFaculty of Environmental and Municipal EngineeringHenan University of Urban ConstructionPingdingshan467036China College of Environmental and Safety EngineeringShenyang University of Chemical TechnologyShenyang110142China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2024年第42卷第9期

页      面：1693-1703,I0002页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080701[工学-工程热物理] 080603[工学-有色金属冶金] 081705[工学-工业催化] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0703[理学-化学] 

基　　金：Project supported by the National Natural Science Foundation of China (21872096) Key Research and Development Project of Henan Province (231111320400) Zhongyuan Yingcai Jihua (ZYYCYU202012183) Academic Leader of Henan Institute of Urban Construction (YCJXSJSDTR202204) College Students'Innovation and Entrepreneurship Training Program of Henan Province(202211765053) Doctoral Research Start-up Project of Henan University of Urban Construction (990/Q2017011) 

主　　题：Pt-HSiW/CeO_(2) Catalytic combustion Chlorobenzene Acid sites Rare earths 

摘      要：Pt-HSiW/CeO_(2) catalysts were prepared for chlorobenzene(CB) catalytic combustion by hydrothermal method at different calcination temperatures,and the effects of the surface acidity and chemical valence on the catalytic activity were *** results show that the catalyst calcined at 450℃(Cat-B)exhibits the outstanding catalytic performance,and the Cat-B catalyst possesses 90% conversion of CB at148℃.The excellent catalytic activity of Cat-B is attributed to more Ce^(3+)/(Ce^(3+)+Ce^(4+)),Pt~0/(Pt^(0)+Pt^(2+)),O_(ads)/(O_(latt)+O_(ads)) and Lewis acid *** degradation mechanism is proposed based on the analysis of the intermediates with the following reaction pathway:chlorobenzene→phenates/benzoquinone→acetate→maleate→CO_(2)+H_(2)O.