SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2024, Vol. 75 ›› Issue (11): 142-151.DOI: 10.1016/j.cjche.2024.06.027

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Strong water-resistant Co-Mn solid solution derived from bimetallic metal–organic frameworks for catalytic destruction of toluene

Juan Lei1, Ying Huang2,3, Baobao Bai2,3, Xiaoli Ren1, Lijun Cheng1, Shuang Wang2   

  1. 1. Department of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030018, China;
    2. College of Environment and Ecology, Taiyuan University of Technology, Jinzhong 030600, China;
    3. Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Taiyuan University of Technology, Jinzhong 030600, China
  • 收稿日期:2024-04-16 修回日期:2024-06-12 接受日期:2024-06-13 出版日期:2024-11-28 发布日期:2024-08-23
  • 通讯作者: Shuang Wang,E-mail:wangshuang@tyut.edu.cn
  • 基金资助:
    The authors acknowledge the financial support of the National Natural Science Foundation of China (22408252, 22078215), Natural Science Foundation for Youths of Shanxi Province (202103021223347), Taiyuan Institute of Technology Talent Introduction Research funding Project (2022KJ010), and Shanxi Province Science and Technology Major Special Plan “Reveal The List and Take Charge” Project (202201090301014).

Strong water-resistant Co-Mn solid solution derived from bimetallic metal–organic frameworks for catalytic destruction of toluene

Juan Lei1, Ying Huang2,3, Baobao Bai2,3, Xiaoli Ren1, Lijun Cheng1, Shuang Wang2   

  1. 1. Department of Environmental and Safety Engineering, Taiyuan Institute of Technology, Taiyuan 030018, China;
    2. College of Environment and Ecology, Taiyuan University of Technology, Jinzhong 030600, China;
    3. Shanxi Key Laboratory of Compound Air Pollutions Identification and Control, Taiyuan University of Technology, Jinzhong 030600, China
  • Received:2024-04-16 Revised:2024-06-12 Accepted:2024-06-13 Online:2024-11-28 Published:2024-08-23
  • Contact: Shuang Wang,E-mail:wangshuang@tyut.edu.cn
  • Supported by:
    The authors acknowledge the financial support of the National Natural Science Foundation of China (22408252, 22078215), Natural Science Foundation for Youths of Shanxi Province (202103021223347), Taiyuan Institute of Technology Talent Introduction Research funding Project (2022KJ010), and Shanxi Province Science and Technology Major Special Plan “Reveal The List and Take Charge” Project (202201090301014).

摘要: The construction of Co-Mn mixed-metal oxide catalysts derived from bimetallic metal-organic frameworks (MOFs) has great significance for catalytic destruction of toluene. Hence, a series of CoaMnbOx-MOFs with different physicochemical properties were successfully synthesized via pyrolysis of Co—Mn bimetallic MOFs. Attributing to the higher specific surface area, more active sites (Co3+ and Mn3+), stronger reducibility, and abundant defect sites, the as-prepared Co1Mn1Ox-MOFs displayed an optimal catalytic performance, especially the excellent water vapor resistance. The result of the in situ diffuse reflectance infrared Fourier transform spectroscopy demonstrated that toluene can be degraded at relatively low temperatures (<100 ℃). Benzyl alcohol, benzaldehyde, benzoic acid, and maleic anhydride were the main intermediate products in toluene degradation process. This work reveals the value of bimetallic MOFs derived Co—Mn oxides for toluene oxidation and presents a novel avenue for designing mixed-metal oxide catalysts with potential applications in volatile organic compounds (VOCs) catalytic oxidation.

关键词: Co-Mn oxide catalyst, Bimetallic metal-organic frameworks (MOFs), Catalytic oxidation, Water-resistant

Abstract: The construction of Co-Mn mixed-metal oxide catalysts derived from bimetallic metal-organic frameworks (MOFs) has great significance for catalytic destruction of toluene. Hence, a series of CoaMnbOx-MOFs with different physicochemical properties were successfully synthesized via pyrolysis of Co—Mn bimetallic MOFs. Attributing to the higher specific surface area, more active sites (Co3+ and Mn3+), stronger reducibility, and abundant defect sites, the as-prepared Co1Mn1Ox-MOFs displayed an optimal catalytic performance, especially the excellent water vapor resistance. The result of the in situ diffuse reflectance infrared Fourier transform spectroscopy demonstrated that toluene can be degraded at relatively low temperatures (<100 ℃). Benzyl alcohol, benzaldehyde, benzoic acid, and maleic anhydride were the main intermediate products in toluene degradation process. This work reveals the value of bimetallic MOFs derived Co—Mn oxides for toluene oxidation and presents a novel avenue for designing mixed-metal oxide catalysts with potential applications in volatile organic compounds (VOCs) catalytic oxidation.

Key words: Co-Mn oxide catalyst, Bimetallic metal-organic frameworks (MOFs), Catalytic oxidation, Water-resistant