Permeation tests of CO₂/CH₄ and H₂S/CH₄ mixtures in a commercial Perfluorosulfonic acid membrane, Aquivion® E87-12S, were carried out at different temperatures, namely 27, 35 and 50 °C, and at relative humidity (RH) ranging from 20 to 95%. A purposely modified experimental set up was used to allow mixture testing in a fixed volume variable pressure permeometer.

The results confirmed the major influence of water content on the gas permeation behavior in PFSA as permeability strongly increased with RH. CO₂ and CH₄ results confirmed experimental data already available in the open literature, while, for H₂S, permeability increased from a value of 17 Barrer measured at 27 °C and 20%RH up to 450 Barrer at the same temperature but at 95%RH. The selectivity with respect to methane also increased with RH, going from 7 to 36 at the same temperature and in the same RH range.

The temperature's increase also improved H₂S permeability, which reached 512 Barrer at 50 °C and 85%RH, but slightly decreased selectivity towards methane which in the same conditions was limited to 23.

A simple model, already used to describe the permeation behavior of other different gases in PFSA, also proved to be able to fit experimental data of H₂S with slight changes of the adjustable parameters.

CO ₂ /CH ₄和 H ₂ S/CH ₄混合物在商用全氟磺酸膜 Aquivion® E87-12S 中的渗透测试在不同温度下进行，即 27、35 和 50 °C，以及相对湿度（ RH) 范围从 20% 到 95%。特意修改的实验装置用于允许在固定体积的可变压力渗透计中进行混合物测试。

结果证实了水含量对 PFSA 中气体渗透行为的主要影响，因为渗透率随 RH 显着增加。CO ₂和 CH ₄结果证实了公开文献中已有的实验数据，而对于 H ₂ S，渗透率从 27 °C 和 20% RH 下测量的 17 Barrer 增加到相同温度下的 450 Barrer，但在95%RH。对甲烷的选择性也随着 RH 的增加而增加，在相同的温度和相同的 RH 范围内从 7 增加到 36。

温度升高也提高了 H ₂ S 渗透率，在 50 °C 和 85% RH 下达到 512 Barrer，但对甲烷的选择性略有降低，在相同条件下限制为 23。

一个简单的模型，已经被用来描述其他不同气体在 PFSA 中的渗透行为，也被证明能够拟合 H ₂ S 的实验数据，但可调参数略有变化。