Ozonation of toluene with CuMn2O4 catalysts: Reaction conditions and mechanism analysis

被引：0

作者：

Ye Z. ^{[1
,2
]}

Wang Z. ^{[1
]}

Liu M. ^{[1
,3
]}

Zhao B. ^{[4
]}

Wang G. ^{[5
]}

Jiang N. ^{[1
]}

Huang Y. ^{[6
]}

机构：

[1] College of Environment, Zhejiang University of Technology, Hangzhou

[2] State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing

[3] Zhejiang Zone King Environmental Sci & Tech Co. Ltd., Hangzhou

[4] Zhejiang Tuna Environmental Science & Technology Co. Ltd., Shaoxing

[5] Research Institute of Zhejiang University-Taizhou, Taizhou

[6] Deqing County Ecological Environment Monitoring Station, Huzhou

来源：

Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2024年 / 38卷 / 03期

关键词：

CuMn[!sub]2[!/sub]O[!sub]4[!/sub; influencing factors; ozone-catalysed oxidation; reaction mechanism;

D O I：

10.3969/j.issn.1003-9015.2024.03.018

中图分类号：

学科分类号：

摘要：

In order to reduce environmental impact of volatile organic pollutants (VOCs) emitted by industrial production, a CuMn2O4 spinel catalyst was prepared via co-precipitation. Catalytic oxidation of VOCs by the CuMn2O4 catalyst combined with ozone (O3) showed good performance. The effects of reaction conditions on the treatment of toluene were investigated, and the reaction mechanism was analyzed. The results show that CuMn2O4 can remove 73% toluene at O3 volume fraction 2.1×10-3 and reaction temperature 100 ℃ under dry air conditions. Catalytic characterization and in situ analysis of the reaction process confirm that suitable temperatures and high O3 volume fractions can promote the production of reactive oxygen species (ROS), the decomposition of O3 happened at Mn-O or Cu-Ov-Mn and formed ROS, and w(Cu0)/w(Cu+) could be used as a toluene adsorption anchor to adsorb toluene at the early stage of the reaction. Toluene was oxidized into benzoic acid and other small molecules such as CO2 and H2O at the active sites (Cu-Ov-Mn). © 2024 Zhejiang University. All rights reserved.

引用

页码：500 / 511

页数：11

共 37 条

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