The enhanced hydrogen separation performance of mixed matrix membranes by incorporation of two-dimensional ZIF-L into polyimide containing hydroxyl group

Kim, Seungju; Shamsaei, Ezzatollah; Lin, Xiaocheng; Hu, Yaoxin; Simon, George P.; Seong, Jong Geun; Kim, Ju Sung; Lee, Won Hee; Lee, Young Moo; Wang, Huanting

doi:10.1016/j.memsci.2017.12.022

Cited by 89 publications

(37 citation statements)

References 52 publications

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“…However, polymer membrane performance has been limited by a trade-off between gas permeation and selectivity, known as “Robeson upper bound” (Chua et al, 2011 ; Zhang et al, 2012 ; Sánchez Laínez et al, 2018a ). Both glassy and rubbery polymer membranes show a relatively poor selectivity for separation of H 2 /CO 2 because the differences in kinetic diameters of these gases are small (2.89 Å for H 2 and 3.3 Å for CO 2 ; Hosseini et al, 2010 ; Kim et al, 2018 ). The inorganic membranes generally have uniform pore size and excellent resistance to high temperature and pressure, e.g., silica membranes (Song et al, 2016a , b ), which can achieved both high permeability and selectivity (Xiang et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Improving the Selectivity of ZIF-8/Polysulfone-Mixed Matrix Membranes by Polydopamine Modification for H2/CO2 Separation

Mei

Yang

et al. 2020

Front. Chem.

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Gas separation membranes are essential for the capture, storage, and utilization (CSU) of CO 2 , especially for H 2 /CO 2 separation. However, both glassy and rubbery polymer membranes lead a relatively poor selectivity for H 2 /CO 2 separation because the differences in kinetic diameters of these gases are small. The present study establishing the mixed matrix membranes (MMMs) consist of a nano-sized zeolitic imidazolate frameworks (ZIF-8) blended with the polysulfone (PSf) asymmetric membranes. The gas transport properties (H 2 , CO 2 , N 2 , and CH 4) of MMMs with a ZIF-8 loading up to 10 wt% were tested and showing significant improvement on permeance of the light gases (e.g., H 2 and CO 2). Moreover, the depositional polydopamine (PDA) layer further enhanced the ideal H 2 /CO 2 selectivity, and the PDA-modified MMMs approach the Robeson upper bound of H 2 /CO 2 separation membranes. Hence, the PDA post-modification strategy can effectively repair the defects of MMMs and improved the H 2 /CO 2 selectivity.

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Section: Introductionmentioning

confidence: 99%

Improving the Selectivity of ZIF-8/Polysulfone-Mixed Matrix Membranes by Polydopamine Modification for H2/CO2 Separation

Mei

Yang

et al. 2020

Front. Chem.

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“…However, little effort has been dedicated to ZIF-based porous nanosheets, or in particular, not in gas separation membranes. To the best of our knowledge, only one report was found using ZIF-L as nanofiller in hybrid membranes for gas separation [ 28 ].…”

Section: Resultsmentioning

confidence: 99%

“…ZIF-L, a two-dimensional zeolitic imidazolate framework, is relatively new, which was firstly developed by Wang et al in 2013 [ 26 , 27 ]. Compared to the conventional ZIF particles, ZIF-L has a distinctive leaf-shaped morphology and cushion-shaped cavity with a dimension of 9.4 Å × 7.0 Å × 5.3 Å between layers, which is well suited to accommodate CO 2 molecules [ 28 ]. In addition, the intrinsic high-aspect-ratio of the 2D particles is preferable for improving gas selectivity [ 29 ].…”

Section: Introductionmentioning

confidence: 99%

Poly(1-trimethylsilyl-1-propyne)-Based Hybrid Membranes: Effects of Various Nanofillers and Feed Gas Humidity on CO2 Permeation

et al. 2018

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Poly(1-trimethylsilyl-1-propyne) (PTMSP) is a high free volume polymer with exceptionally high gas permeation rate but the serious aging problem and low selectivity have limited its application as CO2 separation membrane material. Incorporating inorganic nanoparticles in polymeric membranes has been a common approach to improve the separation performance of membranes, which has also been used in PTMSP based membrane but mostly with respect to tackling the aging issues. Aiming at increasing the CO2 selectivity, in this work, hybrid membranes containing four types of selected nanofillers (from 0 to 3D) were fabricated using PTMSP as the polymer matrix. The effects of the various types of nanofillers on the CO2 separation performance of the resultant membranes were systematically investigated in humid conditions. The thermal, chemical and morphologic properties of the hybrid membranes were characterized using TGA, FTIR and SEM. The gas permeation properties of the hybrid membranes were evaluated using mixed gas permeation test with the presence of water vapour to simulate the flue gas conditions. Experiments show that the addition of different fillers results in significantly different separation performances; The addition of ZIF-L porous 2D filler improves the CO2/N2 selectivity at the expenses of CO2 permeability, while the addition of TiO2, ZIF-7 and ZIF-8 increases the CO2 permeability but the CO2/N2 selectivity decreases.

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“…The resulting mixture (gel) was poured into a polypropylene bottle and heated at 90 8Cf or 22 h. The products were purified following the procedure described above. [20] PES/13X, [20] PBI/Pd, [35] PI/ZIF-L, [12] PI/ZIF-8 [12] ) usingR obeson'supper bound. [13] Preparation of mixed-matrix membranes( MMMs) PEI particles were dried at 120 8Cf or 24 h. Then, the dried PEI particles (5 wt.…”

Section: Synthesis Of Micrometer-sized Sodalite Crystalsmentioning

confidence: 99%

“…[9][10][11] Among the variousm embrane materials, polymericm embranes are reasonablyl ow-cost and easy to process, and are thus widely used in industry. [12] However,t heir performance is limited by a" trade-off" phenomenon between gas selectivity and permeability.T his phenomenon was described by Robesonb yu sing an upper bound correlation between permeability and selectivity for as pecificg as pair,w hich was used to evaluate polymerico rp olymer-mix matrix membranes. [13] The metallicm embranes, especially Pd membranes, have an excellent H 2 permeability and achieve high H 2 purity but suffer from H 2 embrittlement below 300 8C.…”

Section: Introductionmentioning

confidence: 99%

Green Hydrogen Separation from Nitrogen by Mixed‐Matrix Membranes Consisting of Nanosized Sodalite Crystals

et al. 2019

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Nanosized sodalite (Nano‐SOD) crystals were used as active filler to prepare mixed‐matrix membranes (MMMs) for promoting the H2/N2 gas‐separation performance. The Nano‐SOD crystals with extremely small crystallites (40–50 nm) were synthesized from a colloidal suspension free of organic structural directing agent and uniformly dispersed in the polyetherimide (PEI) matrix. The Nano‐SOD filler with a suitable aperture size (2.8 Å) allowed only H2 molecules to pass through and rejected the N2, thus improving the selectivity of the membranes. The high dispersion of Nano‐SOD crystals in the polymer matrix and the interactions between the inorganic and organic phases greatly improved the membrane separation performance and minimized interfacial holes. The MMMs showed a high H2 permeability (≈7155.1 Barrer at 25 °C under atmospheric pressure) and an ideal H2/N2 selectivity factor of approximately 16.9 in a single gas test. Moreover, in a gas mixture (H2/N2, 25–100 °C), the selectivity factor increased significantly to approximately 30.9. The high stability of the MMMs, which consist of highly dispersed Nano‐SOD crystals in a PEI matrix for H2/N2 separation (6 weeks continuous test), makes them an important material for ammonia synthesis applications that require and also release a large amount of H2.

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The enhanced hydrogen separation performance of mixed matrix membranes by incorporation of two-dimensional ZIF-L into polyimide containing hydroxyl group

Cited by 89 publications

References 52 publications

Improving the Selectivity of ZIF-8/Polysulfone-Mixed Matrix Membranes by Polydopamine Modification for H2/CO2 Separation

Improving the Selectivity of ZIF-8/Polysulfone-Mixed Matrix Membranes by Polydopamine Modification for H2/CO2 Separation

Poly(1-trimethylsilyl-1-propyne)-Based Hybrid Membranes: Effects of Various Nanofillers and Feed Gas Humidity on CO2 Permeation

Green Hydrogen Separation from Nitrogen by Mixed‐Matrix Membranes Consisting of Nanosized Sodalite Crystals

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