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

2007 ◽  
pp. 683-686
Author(s):  
Kyoung Mi Jang ◽  
Jun Seok Kim ◽  
Sung Koo Lee ◽  
Hyun Joon Kim
Keyword(s):  
Gas Permeation ◽  
Hybrid Membranes ◽  
Permeation Properties

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

2007 ◽  
Vol 124-126 ◽  
pp. 683-686 ◽  
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.

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

2018 ◽  
Vol 20 (6) ◽  
pp. 1391-1404 ◽  
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.

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

Membranes ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 76 ◽  
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.

scholarly journals Gas Permeation Properties of High-Silica CHA-Type Zeolite Membrane

Membranes ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 249
Author(s):  
Yasuhisa Hasegawa ◽  
Chie Abe ◽  
Mayumi Natsui ◽  
Ayumi Ikeda
Keyword(s):  
Molecular Size ◽  
Gas Permeation ◽  
Zeolite Membrane ◽  
Type Zeolite ◽  
High Silica ◽  
Separation Of Co2 ◽  
Α Al2o3 ◽  
Separation Performances ◽  
Molecular Sieving ◽  
Permeation Properties

The polycrystalline CHA-type zeolite layer with Si/Al = 18 was formed on the porous α-Al2O3 tube in this study, and the gas permeation properties were determined using single-component H2, CO2, N2, CH4, n-C4H10, and SF6 at 303–473 K. The membrane showed permeation behavior, wherein the permeance reduced with the molecular size, attributed to the effect of molecular sieving. The separation performances were also determined using the equimolar mixtures of N2–SF6, CO2–N2, and CO2–CH4. As a result, the N2/SF6 and CO2/CH4 selectivities were as high as 710 and 240, respectively. However, the CO2/N2 selectivity was only 25. These results propose that the high-silica CHA-type zeolite membrane is suitable for the separation of CO2 from CH4 by the effect of molecular sieving.

scholarly journals The Effect of Extrusion Conditions and Material Properties on the Gas Permeation Properties of LDPE/LLDPE Silage Wrap Films

2005 ◽  
Vol 21 (1) ◽  
pp. 27-38 ◽  
Author(s):  
Gerry M. McNally ◽  
Christopher Laffin ◽  
P. D. Forristal ◽  
Padraig O’Kiely ◽  
Christopher M. Small
Keyword(s):  
Material Properties ◽  
Gas Permeation ◽  
Permeation Properties
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