This work is aimed to investigate the permeation characteristic of CA/γ‐CD‐metal organic framework (MOF) based mixed matrix membranes (MMM) for CO₂/CH₄ separation. The defect‐free CA/γ‐CD‐MOF MMMs with dense, isotropic morphology were fabricated using solution casting method. The fabricated membranes were characterized through Fourier transform infrared spectroscopy (FT‐IR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), ultimate tensile testing, and contact angle measurements. The characterization techniques revealed the uniform dispersion of filler in cellulose acetate matrix and absence of the agglomerates or cracks in the synthesized membrane samples. Moreover, the CO₂/CH₄ separation performance of fabricated membrane was evaluated using single and mixed gas permeation tests. A general trend of decreasing permeability and selectivity, that is, 36.79–35 of both CO₂ and CH₄ was observed by increasing the filler weight percentage (0.2–1.0) and pressure (1–5 bar). However, the highest CO₂/CH₄ selectivity of 38.49 was achieved by CA/γ‐CD‐MOF 0.4wt% MMM. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译：

---

基于乙酸纤维素/γ-环糊精MOF的混合基质膜用于CO2 / CH4气体分离的研究

这项工作旨在研究基于CA /γ-CD-金属有机骨架（MOF）的混合基质膜（MMM）用于CO ₂ / CH ₄分离的渗透特性。使用溶液浇铸法制造了具有致密，各向同性形态的无缺陷CA /γ-CD-MOFMMM。通过傅立叶变换红外光谱（FT-IR），X射线衍射（XRD），扫描电子显微镜（SEM），极限拉伸试验和接触角测量来表征制成的膜。表征技术揭示了填料在乙酸纤维素基质中的均匀分散，并且在合成的膜样品中不存在附聚物或裂纹。此外，CO ₂ / CH ₄使用单次和混合气体渗透测试评估制成膜的分离性能。通过增加填料的重量百分比（0.2–1.0）和压力（1-5 bar），可以观察到通透性和选择性降低的总体趋势，即CO ₂和CH ₄均为36.79–35 。但是，CA /γ-CD-MOF0.4wt％MMM达到了最高的CO ₂ / CH ₄选择性38.49。©2021化学工业协会和John Wiley＆Sons，Ltd.