Su Dongrui, Chen Panpan, Li Cunlei, Yan Yongfei, Zhao Ranlei, Yue Qingyou, Qiao Yupeng
College of Petroleum Engineering, Liaoning Petrochemical University, Fushun 113001, China.
School of Mechanical Engineering, Liaoning Petrochemical University, Fushun 113001, China.
Molecules. 2024 Sep 16;29(18):4404. doi: 10.3390/molecules29184404.
Given that methane (CH) and nitrogen (N) have similar properties, achieving high-purity enrichment of CH from nitrogen-rich low-grade gas is extremely challenging and is of great significance for sustainable development in energy and the environment. This paper reviews the research progress on carbon-based materials, zeolites, and MOFs as adsorbent materials for CH/N separation. It focuses on the relationship between the composition, pore size, surface chemistry of the adsorbents, CH/N selectivity, and CH adsorption capacity. The paper also highlights that controlling pore size and atomic-scale composition and optimizing these features for the best match are key directions for the development of new adsorbents. Additionally, it points out that MOFs, which combine the advantages of carbon-based adsorbents and zeolites, are likely to become the most promising adsorbent materials for efficient CH/N separation.
鉴于甲烷（CH）和氮气（N）具有相似的性质，从富含氮气的低品位气体中实现高纯度甲烷富集极具挑战性，对能源和环境的可持续发展具有重要意义。本文综述了碳基材料、沸石和金属有机框架（MOF）作为甲烷/氮气分离吸附剂材料的研究进展。重点关注吸附剂的组成、孔径、表面化学性质与甲烷/氮气选择性及甲烷吸附容量之间的关系。本文还强调，控制孔径和原子尺度组成并优化这些特性以实现最佳匹配是新型吸附剂开发的关键方向。此外，指出结合了碳基吸附剂和沸石优点的金属有机框架很可能成为高效甲烷/氮气分离最具前景的吸附剂材料。
