Thin supported MOF based mixed matrix membranes of Pebax® 1657 for biogas upgrade

Sánchez‐Laínez, Javier; Gracia-Guillén, Inés; Zornoza, Beatriz; Téllez, Carlos; Coronas, Joaquı́n

doi:10.1039/c8nj04769c

Cited by 41 publications

(39 citation statements)

References 48 publications

(39 reference statements)

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“…For the preparation of thin membranes of m‐PBI, films of this polymer were cast at room temperature onto P84 flat asymmetric supports. These supports were prepared following the phase inversion method as in our previous works [20,29–31] . To avoid the penetration of the polymeric solution into the porous support, a gutter layer of PTMSP (Gelest) was applied.…”

Section: Methodsmentioning

confidence: 99%

Green Preparation of Thin Films of Polybenzimidazole on Flat and Hollow Fiber Supports: Application to Hydrogen Separation

et al. 2020

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This work shows the preparation of thin films, with thickness from 70 nm to 1 μm, of meta‐polybenzimidazole (m‐PBI) on polyimide P84 supports. Ethanolic solutions of m‐PBI were used to coat flat and hollow fiber supports of asymmetric P84 with m‐PBI in a process where the coating and drying was performed at room temperature. A solution of NaOH in EtOH allowed the dissolution of the m‐PBI powder, providing the perfect coating solution to build thin films of m‐PBI without damaging the polymeric support. It also meant a green alternative, avoiding the use of toxic solvents, such as dimethylacetamide. The resulting membranes have been tested for the separation of H2 mixtures at high temperature at different setups to allow checking their reproducibility. With 100 nm thickness the membranes showed their best gas separation performance. For flat membranes at 180 °C and 3 bar feed pressure a H2 permeance of 48.5 GPU was obtained, with respective H2/CO2 and H2/N2 selectivities of 33.3 and 55.8. Besides, the hollow fibers under a feed pressure of 6 bar and tested at the same temperature showed near 90 GPU of H2 with a H2/CO2 selectivity of 13.5 in the one‐fiber module and over 39 GPU of H2 with a H2/CO2 selectivity of 20.2 in the five‐fiber module. Finally, the stability of the membranes was proved for 22 days at 180 °C.

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Section: Methodsmentioning

confidence: 99%

Green Preparation of Thin Films of Polybenzimidazole on Flat and Hollow Fiber Supports: Application to Hydrogen Separation

et al. 2020

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“…This would reduce the formation of rigidified polymer area around the particles or sieve-in-a-cage defects, a major problem that is more frequent in glassy polymers. Separation performance of various fillers in PEBA-based MMMs was reported previously, such as ZIF-300, 19 MOF-801, 20 ZIF-7, 21 SAPO-34, 22 ZIF-8, [23][24][25][26] , MIL-101(Cr), 26 carbon nanotubes, 27,28 NaX, 29,30 TiO 2 , 31 ZSM-5, 32 Fe 2 O 3 , 33 UiO-66, 26,34 CuBTC, [15][16][17] and ZIF-67. 35 Since ZIF-67 and ZIF-8 have similar size-sieving pore diameters, comparing their separation performance would reveal other influential factors in their structure.…”

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confidence: 86%

Comparison of different MOF fillers on CO₂ removal performance of supported PEBA mixed matrix membranes

Erfani

Asghari

2020

Greenhouse Gases

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Poly(amide-6-b-ethylene oxide)(PEBA) mixed matrix membranes (MMMs) containing different metal-organic frameworks (MOFs) of CuBTC, ZIF-8, and ZIF-67 have been dip-coated on asymmetric PAN supports. To optimize the ideal skin-layer parameters, MOF loadings of 5, 15, 25, and 35 wt% were applied. The synthesized MOFs and MMMs were structurally characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and field emission scanning electron microscopy (FESEM). The average sizes of the synthesized ZIF-8, ZIF-67, and CuBTC have been determined about 100, 400, and 60-500 nm, respectively. Permeability tests of the MMMs performed using 12-bar feed streams of pure CO 2 , CH 4 , and N 2 , showed 200-338% enhancements of CO 2 permeability and up to a 43% increase in CO 2 /CH 4 selectivity relative to the neat PEBA membrane. The membrane performances were also examined by the mixed gas feeds of CO 2 :CH 4 (10:90).

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“…Sanchez-Laınez et al [147] prepared the MMMs from a Pebaxs 1657 layer that coated on the two supports including a porous asymmetric P84s and dense polytrimethylsilylpropyne (PTMSP). The MOF nanoparticles ZIF-8, MIL-101(Cr), UiO-66 and ZIF-7/8 were considered as filler for fabrication MMMs.…”

Section: Membranementioning

confidence: 99%

Advances in high carbon dioxide separation performance of poly (ethylene oxide)-based membranes

Bandehali

Moghadassi

Parvizian

et al. 2020

Journal of Energy Chemistry

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Thin supported MOF based mixed matrix membranes of Pebax® 1657 for biogas upgrade

Abstract: Thin mixed matrix membranes with a 2–3 μm thick Pebax® 1657 layer on a porous asymmetric polyimide P84® and dense polytrimethylsilylpropyne for biogas upgrade.

Cited by 41 publications

References 48 publications

Green Preparation of Thin Films of Polybenzimidazole on Flat and Hollow Fiber Supports: Application to Hydrogen Separation

Green Preparation of Thin Films of Polybenzimidazole on Flat and Hollow Fiber Supports: Application to Hydrogen Separation

Comparison of different MOF fillers on CO₂ removal performance of supported PEBA mixed matrix membranes

Advances in high carbon dioxide separation performance of poly (ethylene oxide)-based membranes

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Thin supported MOF based mixed matrix membranes of Pebax® 1657 for biogas upgrade

Abstract: Thin mixed matrix membranes with a 2–3 μm thick Pebax® 1657 layer on a porous asymmetric polyimide P84® and dense polytrimethylsilylpropyne for biogas upgrade.

Cited by 41 publications

References 48 publications

Green Preparation of Thin Films of Polybenzimidazole on Flat and Hollow Fiber Supports: Application to Hydrogen Separation

Green Preparation of Thin Films of Polybenzimidazole on Flat and Hollow Fiber Supports: Application to Hydrogen Separation

Comparison of different MOF fillers on CO2 removal performance of supported PEBA mixed matrix membranes

Advances in high carbon dioxide separation performance of poly (ethylene oxide)-based membranes

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Comparison of different MOF fillers on CO₂ removal performance of supported PEBA mixed matrix membranes