典型文献
Understanding the role of tungsten on Pt/CeO2 for vinyl chloride catalytic combustion
文献摘要：
Spherical CeO2 synthesized by the hydrothermal process was used as support to prepare Pt/WO3/CeO2, and the effects of tungsten (W) contents on activity, stability and polychlorinated by-products were investigated to understand the role of W for vinyl chloride (VC) catalytic oxidation. The introduction of 12 wt％W to Pt/CeO2 (P12WC) exhibits the highest catalytic activity with 90％conversion of VC at 250 °C, meanwhile the stability improves and the polychlorinated by-products in the tail gas significantly decrease due to the removal of dissociated Cl species in the formation of HCl. The beneficial effects of W on Pt/CeO2 are closely related to the chemical state of Pt, redox and surface acid sites distribution. The doped W not only makes Pt disperse evenly on the support with the high valence, but also weakens the interaction between Pt and CeO2 by the formation of Pt-O-W and Pt-O-W-O-Ce species, which fa-cilitates oxygen mobility. In addition, the modification of W species also significantly increases the surface acidity amount and changes the distribution of acid sites.
文献关键词：
中图分类号：
作者姓名：
Qifeng Zhang;Zhengbo Zhou;Tian Fang;Han Gu;Yanglong Guo;Wangcheng Zhan;Yun Guo;Li Wang
作者机构：
Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis,School of Chemistry&Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China
文献出处：
引用格式：
[1]Qifeng Zhang;Zhengbo Zhou;Tian Fang;Han Gu;Yanglong Guo;Wangcheng Zhan;Yun Guo;Li Wang-.Understanding the role of tungsten on Pt/CeO2 for vinyl chloride catalytic combustion)[J].稀土学报（英文版）,2022(09):1462-1470
A类：
P12WC,cilitates
B类：
Understanding,role,tungsten,Pt,CeO2,vinyl,chloride,catalytic,combustion,Spherical,synthesized,by,hydrothermal,process,was,used,support,prepare,WO3,effects,contents,activity,stability,polychlorinated,products,were,investigated,understand,VC,oxidation,introduction,wt,exhibits,highest,conversion,meanwhile,improves,tail,gas,significantly,decrease,due,removal,dissociated,species,formation,HCl,beneficial,closely,related,chemical,state,redox,surface,sites,distribution,doped,not,only,makes,disperse,evenly,valence,also,weakens,interaction,between,which,oxygen,mobility,In,addition,modification,increases,acidity,amount,changes
AB值：
0.518022
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