针对沸石膜中典型的Langmuir吸附以及强、弱受限扩散两种情形，利用MaxwellStefan（MS）模型描述膜内扩散，建立了计及界面非平衡条件下吸、脱附阻力的单组分气体渗透膜模型，得到表征界面阻力的解析解。针对强受限和弱受限扩散分子（CF₄和CH₄）在MFI沸石膜中的扩散，讨论了影响界面阻力的主要因素。结果表明：界面阻力分率随膜厚的增加而减小；对于弱受限的CH₄分子，进料端和通透端压力的改变不会影响界面阻力分率的改变；对于强受限的CF₄分子，界面阻力分率受操作压力的影响较大。本文方法可方便地讨论界面阻力的影响，从而指导沸石膜材料合成以及膜组件的设计。

Single component permeation of weakly confined and strongly confined diffusing m olecules through zeolite membranes with typical Langmuir adsorption isotherms ha s been described by a MaxwellStefan (MS) mass transfer model that takes into a ccount interfacial mass transfer resistances at the two sides of nonequilibriu m membrane interfaces, and analytical solutions for permeation fluxes were obtaine d. The main factors influencing the ratios of interfacial resistance to intracry stalline resistance have been discussed for both weakly confined diffusing molec ules (CH₄) and strongly confined diffusing molecules (CF₄). It was found tha t: the ratios of interfacial resistance to intracrystalline resistance decreas e with an increase in membrane thickness; for the weakly confined CH₄, the ratios are not significantly influenced by the pressures on either the feed or permea tion sides; for the strongly confined CF₄, the ratios are very sensitive to ch anges in pressure on both sides. The method presented here can be used for a qui ck test of whether the interfacial resistance is dominant or not, facilitating t he synthesis and design of such zeolite membranes and separation modules.