Molecular Simulation of CH4 and CO2 Competitive Adsorption in Moisture Coals

被引：13

作者：

Han, J. X. ^{[1
]}

Lu, Y. J. ^{[1
]}

Makarova, E. Yu. ^{[1
]}

Bogomolov, A. Kh. ^{[1
]}

Yang, Z. Z. ^{[2
]}

机构：

[1] Moscow State Univ Lomonosov, Geol Fac, Moscow 119991, Russia

[2] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China

来源：

SOLID FUEL CHEMISTRY | 2019年 / 53卷 / 05期

关键词：

coalbed methane; Moisture coal; Molecular simulation; Competitive adsorption; Selective coefficient; WATER-ADSORPTION; PERMEABILITY; SORPTION;

D O I：

10.3103/S0361521919050057

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Molecular simulations of CH4/CO2 competitive adsorption in moisture coals are carried out. The synergistic effect of micropore walls has a significant impact on the spatial distribution of adsorbates. Water molecules in micropores can prevent CO2 and CH4 from smoothly diffusing and adsorbing in the pore. The micropore is more favorable to the advantage of CO2 in the competitive adsorption. The variation of excess adsorption capacity is related to the density difference between adsorbed phase and free phase. Relative to CH4 density, CO2 density is easier to affect the variation trend of adsorption capacity in the competitive adsorption.

引用

页码：270 / 279

页数：10

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