Citation: Meijuan Qi, Zhe Li, Zhang Zhang, Yanshan Gao, Qiang Wang. Controllable synthesis of MnO₂/iron mesh monolithic catalyst and its significant enhancement for toluene oxidation[J]. Chinese Chemical Letters, ;2023, 34(2): 107437. doi: 10.1016/j.cclet.2022.04.035 shu

Controllable synthesis of MnO₂/iron mesh monolithic catalyst and its significant enhancement for toluene oxidation

Meijuan Qi ^{a, b} ,
Zhe Li ^{a, b} ,
Zhang Zhang ^c ,
Yanshan Gao ^{a, b, *,} ,
Qiang Wang ^{a, b, *,}

a.
Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
b.
Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
c.
Beijing Municipal Ecological and Environmental Monitoring Center, Beijing 100048, China

yanshan_gao@bjfu.edu.cn

qiangwang@bjfu.edu.cn

Received Date: 12 January 2022
Revised Date: 16 February 2022
Accepted Date: 12 April 2022
Available Online: 19 April 2022

Figures(3)

A series of monolithic MnO₂/iron mesh (IM) catalysts for oxidation of toluene were successfully prepared by using in situ hydrothermal growth. MnO₂ can grow firmly on the IM substrates surface with a shedding rate of only 0.14%. Due to the highest O_ads and high-valent Mn⁴⁺ and Fe³⁺ elements, the temperature at 50% and 90% toluene conversion (T_50% and T_90%) was 252 and 265 ℃, respectively for the best performance catalyst (hydrothermal temperature of 80 ℃, hydrothermal time of 12 h, and precursor manganese ion concentration of 0.03 mol/L). The catalysts also presented good water resistance and cycle performance. In-situ DRIFTS results suggesting that toluene was first rapid transformed into the reaction intermediate species (benzoate species) and then converted to CO₂ and H₂O. Therefore, this work provides a new direction for the research and application of IM-based monolithic catalysts.
- Toluene oxidation,
- Iron mesh monoliths catalysts,
- MnO₂,
- Resistance properties,
- Reaction mechanism
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Controllable synthesis of MnO2/iron mesh monolithic catalyst and its significant enhancement for toluene oxidation

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Controllable synthesis of MnO₂/iron mesh monolithic catalyst and its significant enhancement for toluene oxidation