化工学报2026，Vol.77Issue(3)：1302-1312,封2,12.DOI:10.11949/0438-1157.20250792
甲氧基功能化Ni基MOFs的制备及CH4/N2吸附分离性能的研究
Preparation of methoxy-functionalized nickel-based MOFs and study of CH4/N2 adsorption and separation performance
摘要
Abstract
The efficient separation and enrichment of methane from low-concentration coalbed methane is of great industrial and environmental significance for improving resource utilization and promoting low-carbon clean energy.In this paper,Ni-PCP-IPA and methoxy-functionalized Ni-PCP-IPA-OCH3 were prepared.The structures and pore structures of the materials were systematically characterized by powder X-ray diffraction,thermogravimetric analysis,N2 adsorption-desorption isotherms at 77 K,and CO2 adsorption-desorption isotherms at 273 K,respectively.The CH4/N2 separation performance of the two materials was also investigated in depth.Selectivity calculations showed that the introduction of methoxy significantly enhanced the CH4/N2 selectivity,with Ni-PCP-IPA-OCH3 reaching 8.6.The adsorption heat of CH4 on Ni-PCP-IPA-OCH3 was relatively low(20.2 kJ/mol),suggesting that it is easy to regenerate.Breakthrough experiments further verified its excellent CH4/N2 separation ability,and cyclic tests demonstrated good reusability and structural stability,making Ni-PCP-IPA-OCH3 a promising adsorbent for the enrichment of low-concentration coalbed methane.关键词
低浓度煤层气/CH4/N2分离/金属有机骨架材料/功能化吸附剂Key words
low-concentration coalbed methane/CH4/N2 separation/metal-organic frameworks/functionalized adsorbent分类
化学化工引用本文复制引用
王铭浠,刘兆壮,王丽,刘佳奇,杨江峰,李晋平..甲氧基功能化Ni基MOFs的制备及CH4/N2吸附分离性能的研究[J].化工学报,2026,77(3):1302-1312,封2,12.基金项目
国家自然科学青年基金项目(22308238) （22308238）
山西省青年科学基金项目(202403021212044) （202403021212044）
