Effect of polyether diamine on gas permeation properties of organic-inorganic hybrid membranes

The pore structure of supported organic-inorganic hybrid membranes was tested by modified gas permeation method. The results were discussed and compared with gas separation performances of the membrane. For the intermediate layer, the pore size is 225nm, which is in relatively good continent with the SEM observation. The pore size of SiO2/C6H5 organic-inorganic hybrid layer is 40-50nm, which is a little bigger compared with the gas separation performances. And for the SiO2/C6H5/MMA organic-inorganic hybrid layer, the pore is 24nm, which is close to the gas separation performances.

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Gas Permeation Properties of Poly(N-Vinylpyrrolidone)/ 3-Aminopropyltriethoxysilane Hybrid Membranes

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.124-126.683 ◽

2007 ◽

Vol 124-126 ◽

pp. 683-686 ◽

Cited By ~ 1

Author(s):

Kyoung Mi Jang ◽

Jun Seok Kim ◽

Sung Koo Lee ◽

Hyun Joon Kim

Keyword(s):

Gas Permeability ◽

Diffusion Mechanism ◽

Sol Gel ◽

Gas Permeation ◽

Hybrid Membranes ◽

Positive Dependence ◽

Chain Flexibility ◽

Permeability Coefficients ◽

Increasing Temperature ◽

Permeation Properties

The organic-inorganic hybrid membranes of poly(N-vinylpyrrolidone) (PVP) and 3- aminopropyltriethoxysilane (APTEOS) were prepared by sol-gel process and their permeation properties of N2 and O2 were studied. The gas permeability coefficients of N2 and O2 are increased with increasing temperature in a range of 30-50°C. The positive dependence on temperature and higher ideal separation factor than theoretical Knudsen value indicates that PVP/APTEOS hybrid membranes follow solution-diffusion mechanism, which is applied to nonporous membrane. The permeability coefficients of N2 and O2 are decreased with increasing PVP content, at a given temperature. It can be explained that the stronger interaction between PVP and APTEOS reduces available free volume, although the increasing of PVP content may lead to an enhancement of chain flexibility.

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Pore Size Determination of Supported Organic-Inorganic Hybrid Membranes by Modified Gas Permeation Method

High-Performance Ceramics III - Key Engineering Materials ◽

10.4028/0-87849-959-8.881 ◽

2007 ◽

pp. 881-886

Author(s):

G.C. Zhang ◽

Bao Qing Zhang ◽

Xu Ping Lin ◽

Yun Fa Chen ◽

Yu Xheng Xie

Keyword(s):

Pore Size ◽

Gas Permeation ◽

Hybrid Membranes ◽

Size Determination ◽

Inorganic Hybrid

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Nafion/IL hybrid membranes with tuned nanostructure for enhanced CO2 separation: effects of ionic liquid and water vapor

Green Chemistry ◽

10.1039/c7gc03727a ◽

2018 ◽

Vol 20 (6) ◽

pp. 1391-1404 ◽

Cited By ~ 29

Author(s):

Zhongde Dai ◽

Luca Ansaloni ◽

Justin J. Ryan ◽

Richard J. Spontak ◽

Liyuan Deng

Keyword(s):

Ionic Liquid ◽

Water Vapor ◽

Gas Permeation ◽

Co2 Separation ◽

Hybrid Membranes ◽

Significant Interest ◽

Permeation Properties

Fully hydrated hybrid membranes based on a polyelectrolyte mixed with an ionic liquid possess gas permeation properties of significant interest for CO2 capture applications.

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

Membranes ◽

10.3390/membranes8030076 ◽

2018 ◽

Vol 8 (3) ◽

pp. 76 ◽

Cited By ~ 13

Author(s):

Zhongde Dai ◽

Vilde Løining ◽

Jing Deng ◽

Luca Ansaloni ◽

Liyuan Deng

Keyword(s):

Gas Permeation ◽

Polymeric Membranes ◽

Inorganic Nanoparticles ◽

Co2 Separation ◽

Separation Performance ◽

Hybrid Membranes ◽

Mixed Gas ◽

Separation Membrane ◽

Separation Performances ◽

Permeation Properties

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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