Catalytic Degradation of Toluene over MnO2/LaMnO3: Effect of Phase Type of MnO2 on Activity

被引：6

作者：

Li, Lu ^{[1
]}

Liu, Yuwei ^{[2
]}

Liu, Jingyin ^{[2
]}

Zhou, Bing ^{[2
]}

Guo, Mingming ^{[3
]}

Liu, Lizhong ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Ctr Nanomat Renewable Energy, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

[2] Nantong Univ, Sch Chem & Chem Engn, 9 Seyuan Rd, Nantong 226019, Peoples R China

[3] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, 800 Dong Chuan Rd, Shanghai 200240, Peoples R China

来源：

CATALYSTS | 2022年 / 12卷 / 12期

关键词：

phase type; perovskite; toluene; catalytic oxidation; degradation path; IN-SITU; OXIDATION; PERFORMANCE; REMOVAL; COMBUSTION; OXIDES; OXYGEN; VOCS; PEROVSKITES;

D O I：

10.3390/catal12121666

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Series of alpha, beta, gamma, delta type MnO2 supported on LaMnO3 perovskite was developed by a one-pot synthesis route. Compared with alpha-MnO2, beta-MnO2, gamma-MnO2, delta-MnO2 and LaMnO3 oxides, all MnO2/LaMnO3 showed promotional catalytic performance for toluene degradation. Among them, alpha-MnO2/LaMnO3 holds the best active and mineralization efficiency. By the analysis of N-2 adsorption-desorption, XPS and H-2-TPR, it can be inferred that the improved activity should be ascribed to the higher proportion of lattice oxygen, better low-temperature reducibility and larger specific surface area. Besides, the byproducts from the low-temperature reaction of toluene oxidation were detected by a TD/GC-MS, confirming the presence of the intermediates. Combined with the in-situ DRIFTS, the catalytic degradation path of toluene oxidation has also been discussed in depth.

引用

页数：13

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