Preparation of Mn3O4 catalyst by redox method and study on its catalytic oxidation performance and mechanism of toluene

被引：0

作者：

Wang C. ^{[1
]}

Shi X. ^{[2
]}

Wu X. ^{[1
]}

Wei F. ^{[2
]}

Zhang H. ^{[1
]}

Che Y. ^{[1
]}

Wu X. ^{[1
]}

机构：

[1] College of Chemical Engineering and Technology, Taiyuan University of Technology, Shanxi, Taiyuan

[2] College of Chemistry, Taiyuan University of Technology, Shanxi, Taiyuan

来源：

Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 06期

关键词：

catalytic oxidation; in situ infrared; Mn[!sub]3[!/sub]O[!sub]4[!/sub] catalyst; toluene;

D O I：

10.11949/0438-1157.20230196

中图分类号：

学科分类号：

摘要：

The Mn3O4 catalyst was synthesized by controlling the calcination temperature and atmosphere based on the redox method for the preparation of α-MnO2. Their catalytic performance was systematically investigated. The results showed that Mn3O4 has greater catalytic properties than that of MnO2, its conversion rate was kept above 90% for 100 h at 230℃. In situ infrared and other series of characterization results show that compared with MnO2, Mn3O4 has appropriate redox ability, higher lattice oxygen activity, more surface adsorbed oxygen and stronger toluene adsorption ability, which promotes the benzoic acid species on the surface of the catalyst and rapid conversion, thereby improving its toluene catalytic performance. This work can serve as a guide for the development of manganese-based catalysts and their mechanism for toluene catalytic oxidation performance enhancement. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：2447 / 2457

页数：10

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