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

Xiangli Liu, Yiqing Zeng, Jiahao Chen, Zhaoxiang Zhong, Weihong Xing

科研成果: 期刊稿件文献综述同行评审

1 引用 (Scopus)

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 °C and low methane selectivity at 350−500 °C. 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.

源语言英语
页(从-至)184-197
页数14
期刊Chinese Journal of Chemical Engineering
80
DOI
出版状态已出版 - 4月 2025

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