膜科学与技术

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Preparation of tubular TIF-4 glass membrane and
its CO2/CH4 gas separation performance

Authors： LIU Huan， JIN Hua， LI Yanshuo

Units： School of Material Science and Chemical Engineering， Ningbo University， Ningbo 315211， China

KeyWords： TIF-4; glass membrane; tubular support; gas separation; CO2 separation

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2025,45(6):1-12

Abstract：

MOF glass materials possess amorphous characteristics, good processability and unique microporous structures, making them excellent materials for fabricating defect-free and molecular-sieving membranes. In this study, an innovative ZnO modification technique was employed to successfully prepare TIF-4 glass membranes on tubular supports that allow for scalable fabrication and industrial integration. The resulting tubular TIF-4 glass membrane exhibited a CO2 permeance of 1.59×10-9 mol/(m2·s·Pa）（4.61 GPU）and a CO2/CH4 selectivity of 52.62 under a feed molar ratio of 15∶85. Moreover, the membrane maintained stable separation performance under pressure fluctuations up to 0.5 MPa and across a temperature range of 25~100 ℃. It also showed no performance degradation over a 70 d period of long-term storage and continuous operation, demonstrating outstanding stability in CO2/CH4 separation.

Funds：

宁波市科技创新2025重大专项（2022Z154）；浙江省省属高校基本科研业务费（SJLZ2023004）

AuthorIntro：

刘欢（1998-），女，山东临沂人，硕士，从事MOF玻璃膜的制备及其气体分离性能研究.

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