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

页码：3546 / 3556

页数：11

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