Improved activity and stability for chlorobenzene oxidation over ternary Cu-Mn-O-Ce solid solution supported on cordierite

被引：7

作者：

Gu, Mingyang ^{[1
]}

Huang, Qiong ^{[1
]}

Xu, Lirui ^{[1
]}

Zhu, Jie ^{[1
]}

Sun, Yueyin ^{[1
]}

Tao, Tao ^{[1
]}

Yang, Bo ^{[1
]}

Chen, Mindong ^{[1
]}

Yang, Hong ^{[2
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Jiangsu Collaborat Innovat Ctr Atmospher Environm, Sch Environm Sci & Engn, Jiangsu Key Lab Atmospher Environm Monitoring & Po, 219 Ningliu Rd, Nanjing 210044, Peoples R China

[2] Univ Reading, Dept Geog & Environm Sci, Reading RG6 6AB, England

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2023年 / 30卷 / 13期

基金：

中国国家自然科学基金;

关键词：

Catalytic oxidation; Chlorinated volatile organic compound; CeO2; Cordierite; CATALYTIC COMBUSTION; ORGANIC-COMPOUNDS; PERFORMANCE; REMOVAL; MECHANISM;

D O I：

10.1007/s11356-022-24988-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A series of CuMnOx/CeO2/cordierite and CuMnCeOx/cordierite catalysts prepared by a complex method with citric acid were investigated for the performance of chlorobenzene (CB) oxidation. The effects of the molar ratio of Mn/Cu, transition metal oxide loading, calcination temperature and time were investigated as the main investigation factor for the performance. Meanwhile, XRD, SEM, BET, H-2-TPR, O-2-TPD and XPS were conducted to characterize the physicochemical properties of these catalysts. The results demonstrated that CuMnOx/CeO2/cordierite catalysts prepared by step-by-step synthesis with the Cu/Mn molar ratio of 5:2 exhibited a high activity (T-90 = 350 ?), owing to the incorporation of CuO and MnOx for forming CuMn2O4 spinel oxide supported on CeO2 surface. More importantly, CuMnCeOx/cordierite catalysts prepared by one-step exhibited the highest oxidation activity (T-90 < 300 ?) attributed to the low H-2 reduction temperature and desorption energy of surface oxygen, and the formed Cu-Mn-O-Ce solid solution and CeO2 promoted the high dispersion of CuMnOx in the supported catalysts. In addition, the possible oxidation mechanism was described to demonstrate the by-products generation and oxygen transfer of CuMnCeOx catalysts.

引用

页码：37535 / 37546

页数：12

共 31 条

[31] CO Oxidation over Metal Oxide (La2O3, Fe2O3, PrO2, Sm2O3, and MnO2) Doped CuO-Based Catalysts Supported on Mesoporous Ce0.8Zr0.2O2 with Intensified Low-Temperature Activity [J].

Cui, Yan ;

Xu, Leilei ;

Chen, Mindong ;

Lv, Chufei ;

Lian, Xinbo ;

Wu, Cai-E ;

Yang, Bo ;

Miao, Zhichao ;

Wang, Fagen ;

Hu, Xun .

CATALYSTS, 2019, 9 (09)

← 1 2 3 4 →