Synergistic Effect of ZSM-5 Zeolite in Pt-CeO2-TiO2/ZSM-5 Catalysts for Highly Efficient Catalytic Oxidation of VOCs

被引：8
作者：
Shi, Yijun [1 ]
Kong, Fanzhe [1 ]
Wan, Jie [2 ]
Zhou, Renxian [1 ]
机构：
[1] Zhejiang Univ, Inst Catalysis, Dept Chem, Hangzhou 310028, Peoples R China
[2] Nanjing Inst Technol, Energy Res Inst, Nanjing 211167, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2023年 / 62卷 / 08期
关键词：
VOLATILE ORGANIC-COMPOUNDS; MIXED-OXIDE; RU/CEO2; CATALYSTS; COMBUSTION; TOLUENE; PERFORMANCE; DICHLOROMETHANE; BENZENE; PD; STABILITY;
D O I：
10.1021/acs.iecr.2c04421
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A series of Pt-CeTi/ZSM-5 catalysts (0.5 wt % Pt) with different CeO2-TiO2/ZSM-5 mass ratios were synthesized and used for the catalytic oxidation of 1,2-dichloroethane and benzene. The results reveal that the strong Pt/CeO2-TiO2 interaction can be evidently enhanced by introducing proper amounts of CeO2-TiO2 mixed oxides, resulting in the improvement of Pt dispersion and redox properties as well as the production of more defective oxygen and Pt2+ species. The synergistic effect between abundant ZSM-5 acid sites (especially strong acid sites) and strong Pt/CeO2-TiO2 oxidizing sites facilitates the deep oxidation of benzene, intermediates, and byproducts generated from the 1,2-dichloro-ethane oxidation process at lower temperature. Among the catalysts, Pt-CeTi/ZSM-5(1/10) with the CeO2-TiO2/ZSM-5 mass ratio of 1/10 exhibits the greatest activity for benzene and 1,2-dichloroethane oxidation, showing the T90% of 145 and 245 degrees C, respectively. Moreover, the catalyst also possesses satisfactory adaptability for the oxidation of various VOCs and durability for 1,2-dichloroethane oxidation.
引用
收藏
页码：3546 / 3556
页数：11
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