SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2025, Vol. 80 ›› Issue (4): 184-197.DOI: 10.1016/j.cjche.2025.02.002

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Research progress on the monolithic catalyst for hydrogenation of CO2 to methane

Xiangli Liu1, Yiqing Zeng1,2, Jiahao Chen2, Zhaoxiang Zhong1,2, Weihong Xing2,3   

  1. 1 School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China;
    2 State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 211816, China;
    3 Jiangsu University, Zhenjiang 212013, China
  • 收稿日期:2024-10-12 修回日期:2025-02-09 接受日期:2025-02-10 出版日期:2025-04-28 发布日期:2025-02-28
  • 通讯作者: Yiqing Zeng,E-mail:yiqingzeng@163.com;Zhaoxiang Zhong,E-mail:zhongzx@njtech.edu.cn
  • 基金资助:
    This work sincerely acknowledged the National Natural Science Foundation of China (22325804 and 22308148), the Natural Science Foundation of Jiangsu Province (BK20230344), the Natural Science Research Project of Jiangsu University(22KJB610001), the Jiangsu Funding Program for Excellent Postdoctoral Talent (2023ZB505).

Research progress on the monolithic catalyst for hydrogenation of CO2 to methane

Xiangli Liu1, Yiqing Zeng1,2, Jiahao Chen2, Zhaoxiang Zhong1,2, Weihong Xing2,3   

  1. 1 School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China;
    2 State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 211816, China;
    3 Jiangsu University, Zhenjiang 212013, China
  • Received:2024-10-12 Revised:2025-02-09 Accepted:2025-02-10 Online:2025-04-28 Published:2025-02-28
  • Contact: Yiqing Zeng,E-mail:yiqingzeng@163.com;Zhaoxiang Zhong,E-mail:zhongzx@njtech.edu.cn
  • Supported by:
    This work sincerely acknowledged the National Natural Science Foundation of China (22325804 and 22308148), the Natural Science Foundation of Jiangsu Province (BK20230344), the Natural Science Research Project of Jiangsu University(22KJB610001), the Jiangsu Funding Program for Excellent Postdoctoral Talent (2023ZB505).

摘要: Carbon dioxide (CO2) can be efficiently converted and utilized through the CO2 methanation reaction, which has significant potential benefits for the environment and the economy. The contradiction between the thermodynamics and kinetics of the CO2 methanation reaction process leads to low CO2 conversion at 200-350 ℃ and low methane selectivity at 350-500 ℃. The utilization of catalysts can solve the contradiction between kinetics and thermodynamics, achieving high CO2 methanation efficiency at low temperatures. However, the poor thermal conductivity of powder catalysts leads to the rapid accumulation of heat, resulting in the formation of hot spots, which can cause the sintering or even deactivation of active species. To solve this problem, researchers have focused on monolithic catalysts with integrated reaction systems. This review categorizes the monolithic catalysts into two main groups based on their unique characteristics, namely structured catalysts and catalytic membrane reactors. The characteristics of these monolithic catalysts, commonly used support materials, preparation techniques, and their applications in the CO2 methanation reaction are discussed in depth. These studies provide theoretical basis and practical guidance for the design and optimization of structured catalysts and catalytic membrane reactors. Finally, challenges and prospects in the application of monolithic catalysts for the CO2 methanation reaction are proposed for the future development.

关键词: Carbon dioxide, Hydrogenation, Methane, Monolithic catalyst, Structured catalyst, Catalytic membrane reactor

Abstract: Carbon dioxide (CO2) can be efficiently converted and utilized through the CO2 methanation reaction, which has significant potential benefits for the environment and the economy. The contradiction between the thermodynamics and kinetics of the CO2 methanation reaction process leads to low CO2 conversion at 200-350 ℃ and low methane selectivity at 350-500 ℃. The utilization of catalysts can solve the contradiction between kinetics and thermodynamics, achieving high CO2 methanation efficiency at low temperatures. However, the poor thermal conductivity of powder catalysts leads to the rapid accumulation of heat, resulting in the formation of hot spots, which can cause the sintering or even deactivation of active species. To solve this problem, researchers have focused on monolithic catalysts with integrated reaction systems. This review categorizes the monolithic catalysts into two main groups based on their unique characteristics, namely structured catalysts and catalytic membrane reactors. The characteristics of these monolithic catalysts, commonly used support materials, preparation techniques, and their applications in the CO2 methanation reaction are discussed in depth. These studies provide theoretical basis and practical guidance for the design and optimization of structured catalysts and catalytic membrane reactors. Finally, challenges and prospects in the application of monolithic catalysts for the CO2 methanation reaction are proposed for the future development.

Key words: Carbon dioxide, Hydrogenation, Methane, Monolithic catalyst, Structured catalyst, Catalytic membrane reactor