SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2021, Vol. 34 ›› Issue (6): 278-288.DOI: 10.1016/j.cjche.2020.08.015

• Resources and Environmental Technology • 上一篇    下一篇

Catalytic performance improvement of volatile organic compounds oxidation over MnOx and GdMnO3 composite oxides from spent lithium-ion batteries: Effect of acid treatment

Mingming Guo1, Lizhong Liu2, Jia-nan Gu1, Hongbo Zhang3, Xin Min1, Jianxing Liang1, Jinping Jia1,4, Kan Li1,4, Tonghua Sun1,5   

  1. 1 School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    2 School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;
    3 School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
    4 Shanghai Institute of Pollution Control and Ecology Security, Shanghai 200092, China;
    5 Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai 200240, China
  • 收稿日期:2020-04-12 修回日期:2020-08-10 出版日期:2021-06-28 发布日期:2021-08-30
  • 通讯作者: Kan Li, Tonghua Sun
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant numbers 21876107 and 21607103).

Catalytic performance improvement of volatile organic compounds oxidation over MnOx and GdMnO3 composite oxides from spent lithium-ion batteries: Effect of acid treatment

Mingming Guo1, Lizhong Liu2, Jia-nan Gu1, Hongbo Zhang3, Xin Min1, Jianxing Liang1, Jinping Jia1,4, Kan Li1,4, Tonghua Sun1,5   

  1. 1 School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
    2 School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China;
    3 School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
    4 Shanghai Institute of Pollution Control and Ecology Security, Shanghai 200092, China;
    5 Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai 200240, China
  • Received:2020-04-12 Revised:2020-08-10 Online:2021-06-28 Published:2021-08-30
  • Contact: Kan Li, Tonghua Sun
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant numbers 21876107 and 21607103).

摘要: In this work, cathode materials of spent lithium-ion ternary batteries are recovered and used as metal precursor to prepare multi-metal oxides MnOx(SY) and GdMnO3(SY) via combustion method and sol–gel method, respectively. Furthermore, a series of MnOx(SY)-n and GdMnO3(SY)-n (n = 0.05, 0.10, 1.00, 4.00, n represents the dilute HNO3 concentration) catalysts are fabricated by acid treatment of MnOx(SY) and GdMnO3(SY) samples and catalytic activities of oxygenated VOCs oxidation over all the prepared catalysts are investigated. Catalytic evaluation results show that acid-treated MnOx(SY)-0.10 and GdMnO3(SY)-0.05 samples perform the optimum VOCs removal efficiency respectively, which may be attributed to their obvious enhancement of physicochemical properties. In detail, MnOx(SY)-0.10 and GdMnO3(SY)-0.05 samples exhibit the larger specific surface area, bigger amount of surface high-valence metal ions (Mn4+, Co3+, Ni3+), more abundant adsorbed oxygen species and better low-temperature reducibility, which can play a crucial role in the significant improvement of VOCs oxidation. In situ DRIFTS results imply that the possible main intermediates are -OCO, -COO and -C-O species produced during VOCs oxidation. Possible by-products are further determined via TD/GC–MS analysis.

关键词: Spent lithium-ions batteries, Acid treatment, Multi manganese-based oxides and perovskite, VOCs oxidation

Abstract: In this work, cathode materials of spent lithium-ion ternary batteries are recovered and used as metal precursor to prepare multi-metal oxides MnOx(SY) and GdMnO3(SY) via combustion method and sol–gel method, respectively. Furthermore, a series of MnOx(SY)-n and GdMnO3(SY)-n (n = 0.05, 0.10, 1.00, 4.00, n represents the dilute HNO3 concentration) catalysts are fabricated by acid treatment of MnOx(SY) and GdMnO3(SY) samples and catalytic activities of oxygenated VOCs oxidation over all the prepared catalysts are investigated. Catalytic evaluation results show that acid-treated MnOx(SY)-0.10 and GdMnO3(SY)-0.05 samples perform the optimum VOCs removal efficiency respectively, which may be attributed to their obvious enhancement of physicochemical properties. In detail, MnOx(SY)-0.10 and GdMnO3(SY)-0.05 samples exhibit the larger specific surface area, bigger amount of surface high-valence metal ions (Mn4+, Co3+, Ni3+), more abundant adsorbed oxygen species and better low-temperature reducibility, which can play a crucial role in the significant improvement of VOCs oxidation. In situ DRIFTS results imply that the possible main intermediates are -OCO, -COO and -C-O species produced during VOCs oxidation. Possible by-products are further determined via TD/GC–MS analysis.

Key words: Spent lithium-ions batteries, Acid treatment, Multi manganese-based oxides and perovskite, VOCs oxidation