常州大学学报（自然科学版）2026，Vol.38Issue(2)：57-64,8.DOI:10.3969/j.issn.2095-0411.2026.02.007
页岩有机质微纳米限域空间内甲烷吸附行为研究——以龙马溪组页岩为例
Methane adsorption behavior in confined space of shale kerogen:a case study of Longmaxi Formation shale
摘要
Abstract
To address the issue that methane multi-component adsorption behavior in shale micro-nano confined spaces is difficult to clarify,this study conducted methane adsorption experiment on 9 groups of shale kerogen samples from the Longmaxi Formation in the Sichuan Basin,and analyzed the meth-ane adsorption behavior in the confined spaces of micro-nano pores using an improved Ono-Kondo model.Results show that the improved Ono-Kondo model is more suitable for the characterization of methane adsorption behavior in shale kerogen.Methane is adsorbed in the nanopore by surface adsorp-tion and pore-filling adsorption,and the adsorbed methane in the form of pore-filling contributes sig-nificantly to the total methane adsorption amount.The surface adsorption behavior of methane mainly occurs in the mesopores,and its adsorption capacity increases with increasing mesopore volume.In contrast,the pore-filling adsorption mainly occurs in the micropores,and its adsorption capacity in-creases logarithmically with increasing micropore volume(<2 nm).关键词
页岩气/甲烷吸附/分子模拟/限域空间/孔隙结构Key words
shale gas/methane adsorption/molecular simulation/confined space/pore structure分类
天文与地球科学引用本文复制引用
张楚,冯鹏,张雨恒..页岩有机质微纳米限域空间内甲烷吸附行为研究——以龙马溪组页岩为例[J].常州大学学报（自然科学版）,2026,38(2):57-64,8.基金项目
国家自然科学基金资助项目(41872123) （41872123）
中国矿业大学煤层气资源与成藏过程教育部重点实验室开放研究基金资助项目(2023-006). （2023-006）
