Engineering homointerface-mediated mixed matrix membrane for propylene/propane separation

IF 3.5 3区工程技术 Q2 ENGINEERING, CHEMICAL

AIChE Journal Pub Date : 2025-02-11 DOI:10.1002/aic.18768

Xinpu Niu, Zongkai Liu, Haofan Zhao, Jing Wang, Guanying Dong, Yatao Zhang

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引用次数: 0

Abstract

Achieving seamless integration between polymer-filler remains a significant challenge in gas separation mixed matrix membranes (MMMs), particularly with glassy polymers of intrinsic microporosity (PIMs). Here, we report a homointerface strategy for fabricating high-performance MMMs by the modulated synthesis of zeolitic imidazolate framework ZIF-8 fillers with amidoxime-modified polymer of intrinsic microporosity (AOPIM-1) oligomers, followed by being encapsulated within the long-chain AOPIM-1 polymer matrix. These AOPIM-1 oligomers serve a dual role: precisely modulating the crystal growth of ZIF-8 and establishing intimate homointerfaces between polymer-filler due to their intervening linker function. This strategy ensures excellent filler dispersion while preserving their interconnected network structure within MMMs, offering abundant percolating nanochannels. The resulting MMMs exhibited remarkably enhanced C₃H₆/C₃H₈ separation performance, with optimal combinations of C₃H₆ permeability (184.5–267.6 Barrer) and C₃H₆/C₃H₈ selectivity (23.9–28.9) outperforming state-of-the-art metal–organic frameworks (MOF)-based MMMs. This strategy presents an alternative strategy for the design of efficient MOFs/PIMs MMMs in the separation of challenging gas mixtures.

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来源期刊

AIChE Journal 工程技术-工程：化工

CiteScore

7.10

自引率

10.80%

发文量

411

审稿时长

3.6 months

期刊介绍： The AIChE Journal is the premier research monthly in chemical engineering and related fields. This peer-reviewed and broad-based journal reports on the most important and latest technological advances in core areas of chemical engineering as well as in other relevant engineering disciplines. To keep abreast with the progressive outlook of the profession, the Journal has been expanding the scope of its editorial contents to include such fast developing areas as biotechnology, electrochemical engineering, and environmental engineering. The AIChE Journal is indeed the global communications vehicle for the world-renowned researchers to exchange top-notch research findings with one another. Subscribing to the AIChE Journal is like having immediate access to nine topical journals in the field. Articles are categorized according to the following topical areas: Biomolecular Engineering, Bioengineering, Biochemicals, Biofuels, and Food Inorganic Materials: Synthesis and Processing Particle Technology and Fluidization Process Systems Engineering Reaction Engineering, Kinetics and Catalysis Separations: Materials, Devices and Processes Soft Materials: Synthesis, Processing and Products Thermodynamics and Molecular-Scale Phenomena Transport Phenomena and Fluid Mechanics.