This work presents an attempt at correlating the available permeability/selectivity literature data for hollow fibers and flat membranes. Therefore, this paper gathers the information pertaining to membrane materials for which membrane properties of flat membranes and hollow fibers have both been reported. An overview of the relations between selectivity and permeance of hollow fiber membranes for various gas pairs (O₂/N₂, CO₂/CH₄, CO₂/N₂, H₂/N₂, H₂/CO₂, H₂/CH₄ and He/N₂) is presented first. The upper bound lines are the ones proposed by Robeson, which were calculated by assuming a one-micron-thick skin layer as proposed by Robeson in 2008. From the results obtained, a relation between the selectivity ratio in both kinds of membranes (α_H/α_f) and skin layer thickness (l) calculated from flat membranes and hollow fibers gas permeation data for these pairs of gases is also presented. The skin layer thicknesses measured using seven different experimental techniques for six commercial membranes are compared. The influences of spinning parameters on the morphology and performance of hollow fiber membrane gas separation are discussed. Finally, an analysis is made of the reasons why the dense skin layer thicknesses of a hollow fiber calculated using permeance and permeability data vary for different gases and also differ from direct experimental measurements.

这项工作提出了使中空纤维和平坦膜的可用渗透率/选择性文献数据相互关联的尝试。因此，本文收集了有关膜材料的信息，这些材料均已报道了平膜和中空纤维的膜性能。中空纤维膜对各种气体对（O ₂ / N ₂，CO ₂ / CH ₄，CO ₂ / N ₂，H ₂ / N ₂，H ₂ / CO ₂，H _2的选择性和渗透率之间的关系的概述/ CH ₄和He / N ₂）首先出现。上限线是由罗伯逊提出的那些，其通过如在2008年提出的罗伯逊从获得的结果假定一个1微米厚的表层计算（在这两种膜的选择比之间的关系的α _ħ /α _˚F）和皮层厚度（升还显示了从平膜和中空纤维计算出的这些气体对的气体渗透数据。比较了使用六种商用膜的七种不同实验技术测得的表皮层厚度。讨论了纺丝参数对中空纤维膜气体分离形态和性能的影响。最后，分析了为什么使用磁导率和渗透率数据计算出的中空纤维的致密表层厚度随不同气体而变化并且也与直接实验测量不同的原因。