Influence of novel surface modifying macromolecules and coagulation media on the gas permeation properties of different polymeric gas separation membranes

2011 ◽  
Vol 124 (3) ◽  
pp. 2300-2310 ◽  
Author(s):  
Houman Savoji ◽  
Dipak Rana ◽  
Takeshi Matsuura ◽  
Mohammad Soltanieh ◽  
Shahram Tabe
Keyword(s):  
Gas Separation ◽  
Gas Permeation ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Permeation Properties

scholarly journals Synthesis and Gas Permeation Properties of Tetraoxidethianthrene Based Polymers of Intrinsic Microporosity

2021 ◽  
Author(s):  
Sarah A. Felemban ◽  
C. Grazia Bezzu ◽  
Bibiana Comesaña-Gándara ◽  
Johannes Carolus Jansen ◽  
Alessio Fuoco ◽  
...  
Keyword(s):  
Gas Separation ◽  
Gas Permeation ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Polymers Of Intrinsic Microporosity ◽  
Intrinsic Microporosity ◽  
Permeation Properties ◽  
Potential Use

A series of nine polymers of intrinsic microporosity (PIMs) derived from different bis-catechol monomers and 2,3,7,8-tetrafluoro-5,5’,10,10’-tetraoxidethianthrene (TOT) were synthesised and tested for their potential use as gas separation membranes. As...

Impact of Magnetically Aligned CNT/PC Nanocomposites for Hydrogen Gas Separation Applications

MRS Advances ◽  
2016 ◽  
Vol 1 (42) ◽  
pp. 2873-2880
Author(s):  
Anshu Sharma ◽  
S. P. Nehra ◽  
Y. K. Vijay ◽  
I. P. Jain
Keyword(s):  
Magnetic Field ◽  
Dielectric Constant ◽  
Gas Separation ◽  
Gas Permeability ◽  
Gas Permeation ◽  
Hydrogen Gas ◽  
Nanocomposite Membranes ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Magnetically Aligned

ABSTRACTThe goal of this work is to study the properties of magnetically aligned CNT/PC nanocomposites towards the development of hydrogen gas separation membranes. A fraction (0.1 weight %) of synthesized carbon nanotubes (CNTs) have been dispersed homogeneously throughout polycarbonate (PC) matrix by ultrasonication. The alignment of CNT in PC matrix has been accomplished by applying an external magnetic field of 1200 Gauss. These nanocomposites have been studied by gas permeation using H2, N2and Co2electrical and dielectric constant measurements. Experimental results of gas permeability measurements exhibit here that H2is more selective than N2and Co2in magnetically aligned nanocomposite membranes which can be used as good hydrogen separating media. I-V characteristics show the electron hopping like behavior and dielectric constant shows the enhancement in permittivity of these nanocomposites.

scholarly journals The Optimization of Dispersion and Application Techniques for Nanocarbon-Doped Mixed Matrix Gas Separation Membranes

Membranes ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 87
Author(s):  
Ruben Hammerstein ◽  
Tim Schubert ◽  
Gerd Braun ◽  
Tobias Wolf ◽  
Stéphan Barbe ◽  
...  
Keyword(s):  
Gas Separation ◽  
Gas Permeation ◽  
Mixed Matrix Membranes ◽  
Parameter Study ◽  
Mixed Matrix ◽  
Electrically Conductive ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Roll Mill ◽  
Application Techniques

In this work, supported cellulose acetate (CA) mixed matrix membranes (MMMs) were prepared and studied concerning their gas separation behaviors. The dispersion of carbon nanotube fillers were studied as a factor of polymer and filler concentrations using the mixing methods of the rotor–stator system (RS) and the three-roll-mill system (TRM). Compared to the dispersion quality achieved by RS, samples prepared using the TRM seem to have slightly bigger, but fewer and more homogenously distributed, agglomerates. The green γ-butyrolactone (GBL) was chosen as a polyimide (PI) polymer-solvent, whereas diacetone alcohol (DAA) was used for preparing the CA solutions. The coating of the thin CA separation layer was applied using a spin coater. For coating on the PP carriers, a short parameter study was conducted regarding the plasma treatment to affect the wettability, the coating speed, and the volume of dispersion that was applied to the carrier. As predicted by the parameter study, the amount of dispersion that remained on the carriers decreased with an increasing rotational speed during the spin coating process. The dry separation layer thickness was varied between about 1.4 and 4.7 μm. Electrically conductive additives in a non-conductive matrix showed a steeply increasing electrical conductivity after passing the so-called percolation threshold. This was used to evaluate the agglomeration behavior in suspension and in the applied layer. Gas permeation tests were performed using a constant volume apparatus at feed pressures of 5, 10, and 15 bar. The highest calculated CO2/N2 selectivity (ideal), 21, was achieved for the CA membrane and corresponded to a CO2 permeability of 49.6 Barrer.

Role of critical concentration of PEI in NMP solutions on gas permeation characteristics of PEI gas separation membranes

2013 ◽  
Vol 19 (2) ◽  
pp. 677-685 ◽  
Author(s):  
Ahmad Arabi Shamsabadi ◽  
Ali Kargari ◽  
Masoud Bahrami Babaheidari ◽  
Saeed Laki ◽  
Hadi Ajami
Keyword(s):  
Gas Separation ◽  
Critical Concentration ◽  
Gas Permeation ◽  
Separation Membranes ◽  
Gas Separation Membranes

MXene-based gas separation membranes with sorption type selectivity

2021 ◽  
Vol 621 ◽  
pp. 118994
Author(s):  
D.I. Petukhov ◽  
A.S. Kan ◽  
A.P. Chumakov ◽  
O.V. Konovalov ◽  
R.G. Valeev ◽  
...  
Keyword(s):  
Gas Separation ◽  
Separation Membranes ◽  
Gas Separation Membranes

scholarly journals A Self‐Consistent Model for Sorption and Transport in Polyimide‐Derived Carbon Molecular Sieve Gas Separation Membranes

2020 ◽  
Vol 132 (46) ◽  
pp. 20523-20527
Author(s):  
Oishi Sanyal ◽  
Samuel S. Hays ◽  
Nicholas E. León ◽  
Yoseph A. Guta ◽  
Arun K. Itta ◽  
...  
Keyword(s):  
Gas Separation ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Separation Membranes ◽  
Gas Separation Membranes ◽  
Consistent Model ◽  
Self Consistent
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