Influence of surface acidity and chemical valence on low temperature activity over Pt-HSiW/CeO2 for catalytic combustion of chlorobenzene

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外文摘要：Pt-HSiW/CeO2 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 investigated.The 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 at 148 ℃.The excellent catalytic activity of Cat-B is attributed to more Ce3+/(Ce3++Ce4+),Pt0/(Pt0+Pt2+),Oads/(Olatt+Oads)and Lewis acid sites.The degradation mechanism is proposed based on the analysis of the intermediates with the following reaction pathway:chlorobenzene → phenates/benzoquinone →acetate → maleate → CO2+H2O.

外文关键词：

Pt-HSiW/CeO2Catalytic combustionChlorobenzeneAcid sitesRare earths

作者：

Zhongxian Song、Zepeng Liu、Xuejun Zhang、Yanli Mao、Wei Liu、Chunxiang Gao、Haiyang Li、Xia Zhang、Changrui Han、Zhenzhen Huang

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作者单位：

Key Laboratory of Carbon Emission Reduction and Combined Air Pollution Control Technology,Faculty of Environmental and Municipal Engineering,Henan University of Urban Construction,Pingdingshan,467036,China

College of Environmental and Safety Engineering,Shenyang University of Chemical Technology,Shenyang,110142,China

基金：

National Natural Science Foundation of ChinaKey Research and Development Project of Henan ProvinceZhongyuan Yingcai JihuaAcademic Leader of Henan Institute of Urban ConstructionCollege Students'Innovation and Entrepreneurship Training Program of Henan ProvinceDoctoral Research Startup Project of Henan University of Urban Construction

项目编号：

21872096231111320400ZYYCYU202012183YCJXSJSDTR202204202211765053990/Q2017011

出版年：

2024

DOI：

10.1016/j.jre.2023.09.007

稀土学报(英文版)

中国稀土学会

稀土学报(英文版)

CSTPCDEI

影响因子：1.3

ISSN：1002-0721

年,卷(期)：2024.42(9)

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