Imperfect perfection: Selective induction of CO2 during diffusion in mixed matrix membranes

Yu, Junjian; Wang, Zhe; Yang, Cancan; Wang, Fei; Cheng, Yingchun; Wang, Song; Zhang, Yi; Wang, Zhaoli

doi:10.1016/j.jece.2023.110672

Cited by 7 publications

(4 citation statements)

References 58 publications

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“…We use pure gas and test the prepared samples at constant pressure and constant temperature (1.0 bar, 30 °C). , The experiment involved conducting pressure tests (ranging from 1 to 9 bar, 30 °C) on CO 2 gas in its pure. The tests were conducted when the volume remained constant while the pressure varied.…”

Section: Methodsmentioning

confidence: 99%

Surface-Modified Sodalite (SOD) Zeolite and Preparation of Mixed Matrix Membranes with Polymers of Intrinsic Microporosity (PIM-1) for Efficient Gas Separation

Han,

Yu,

Wang

et al. 2024

ACS Appl. Polym. Mater.

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Zeolite is a commonly utilized filler in mixed matrix membranes (MMMs) to enhance the effectiveness of gas separation due to its molecular sieving properties with high separation coefficients. However, the compatibility and suitability between the zeolite and the polymer membrane are prerequisites for preparing homogeneous membranes and an essential factor affecting gas separation performance. Herein, we synthesized nucleus-crown-crown structures by surface modification of SOD zeolite and prepared MMMs by doping them into Polymers of Intrinsic Microporosity (PIM-1) for efficient gas separation. FTIR, XRD, SEM, and TGA characterized the fillers and the MMMs. The average particle size of the filler was estimated to be approximately 552.43 nm by SEM images. The surface-modified SOD zeolite facilitates the rapid permeation of specific gas molecules and enhances the dispersion of SOD zeolite in the PIM-1 membrane, thereby improving gas separation performance. Compared with pure PIM-1 membrane, the MMMs with a loading of 7 wt % exhibited CO 2 and H 2 permeabilities reaching up to 7000.0 and 3600.0 Barrer; their selectivities for CO 2 /N 2 and H 2 /N 2 were measured at 17.7 and 9.29, respectively. MMMs with the best fill ratios exceeded the 2008 Robeson upper limits. The methods for surface modification of SOD zeolites provide a new way for the application of SOD zeolite in the area of gas separation.

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Section: Methodsmentioning

confidence: 99%

Surface-Modified Sodalite (SOD) Zeolite and Preparation of Mixed Matrix Membranes with Polymers of Intrinsic Microporosity (PIM-1) for Efficient Gas Separation

Han,

Yu,

Wang

et al. 2024

ACS Appl. Polym. Mater.

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“…86 Moreover, the incorporation of defect-engineered UiO-66 particles into PIM-1 was carried out to prepare MMMs and the CO 2 /N 2 separation performance was improved due to the enhanced adhesion between the polymer and the defective MOF fillers. 19,87 As another renowned MOF material, defect-engineered ZIF-8 fillers have also been investigated in MMMs to enhance the gas separation performance. An et al synthesised defectengineered ZIF-8 nanoparticles using an alkyl amine modulator, which could coordinate with Zn 2+ ions (Fig.…”

Section: Design Strategies Of Mmmsmentioning

confidence: 99%

“…84 These characteristics of defective MOFs provide a versatile platform for improving MOF–polymer interfacial adhesion and increasing selective sorption properties. The relevant reports have demonstrated that the defective MOFs in MMMs, such as Ui-66, 19,85–88 ZIF-8, 89,90 ZIF-90, 91 and Ni-MOF, 22 show great potential for enhancing gas separation performance.…”

Section: Design Strategies Of Mmmsmentioning

confidence: 99%