Influence of Physicochemical Properties on Gas Transport Properties of Silver-Containing Ionic Liquid Mixtures for Olefin/Paraffin Membrane Separation

2020 ◽  
Vol 98 (10) ◽  
pp. 385-392
Author(s):  
Sejoon Park ◽  
Benny D. Freeman ◽  
Joan F. Brennecke
Keyword(s):  
Ionic Liquid ◽  
Physicochemical Properties ◽  
Transport Properties ◽  
Membrane Separation ◽  
Gas Transport ◽  
Liquid Mixtures ◽  
Gas Transport Properties

scholarly journals A Molecular Simulation Study of Silica/Polysulfone Mixed Matrix Membrane for Mixed Gas Separation

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2199
Author(s):  
Khadija Asif ◽  
Serene Sow Mun Lock ◽  
Syed Ali Ammar Taqvi ◽  
Norwahyu Jusoh ◽  
Chung Loong Yiin ◽  
...  
Keyword(s):  
Transport Properties ◽  
Molecular Simulation ◽  
Gas Separation ◽  
Membrane Separation ◽  
Gas Transport ◽  
Mixed Matrix ◽  
Mixed Gas ◽  
Gas Transport Properties ◽  
Simulation Results ◽  
Mixed Gases

Polysulfone-based mixed matrix membranes (MMMs) incorporated with silica nanoparticles are a new generation material under ongoing research and development for gas separation. However, the attributes of a better-performing MMM cannot be precisely studied under experimental conditions. Thus, it requires an atomistic scale study to elucidate the separation performance of silica/polysulfone MMMs. As most of the research work and empirical models for gas transport properties have been limited to pure gas, a computational framework for molecular simulation is required to study the mixed gas transport properties in silica/polysulfone MMMs to reflect real membrane separation. In this work, Monte Carlo (MC) and molecular dynamics (MD) simulations were employed to study the solubility and diffusivity of CO2/CH4 with varying gas concentrations (i.e., 30% CO2/CH4, 50% CO2/CH4, and 70% CO2/CH4) and silica content (i.e., 15–30 wt.%). The accuracy of the simulated structures was validated with published literature, followed by the study of the gas transport properties at 308.15 K and 1 atm. Simulation results concluded an increase in the free volume with an increasing weight percentage of silica. It was also found that pure gas consistently exhibited higher gas transport properties when compared to mixed gas conditions. The results also showed a competitive gas transport performance for mixed gases, which is more apparent when CO2 increases. In this context, an increment in the permeation was observed for mixed gas with increasing gas concentrations (i.e., 70% CO2/CH4 > 50% CO2/CH4 > 30% CO2/CH4). The diffusivity, solubility, and permeability of the mixed gases were consistently increasing until 25 wt.%, followed by a decrease for 30 wt.% of silica. An empirical model based on a parallel resistance approach was developed by incorporating mathematical formulations for solubility and permeability. The model results were compared with simulation results to quantify the effect of mixed gas transport, which showed an 18% and 15% percentage error for the permeability and solubility, respectively, in comparison to the simulation data. This study provides a basis for future understanding of MMMs using molecular simulations and modeling techniques for mixed gas conditions that demonstrate real membrane separation.

scholarly journals The Effect of Microporous Polymeric Support Modification on Surface and Gas Transport Properties of Supported Ionic Liquid Membranes

Membranes ◽  
2015 ◽  
Vol 6 (1) ◽  
pp. 4 ◽  
Author(s):  
Alsu Akhmetshina ◽  
Ilsiya Davletbaeva ◽  
Ekaterina Grebenschikova ◽  
Tatyana Sazanova ◽  
Anton Petukhov ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transport Properties ◽  
Gas Transport ◽  
Liquid Membranes ◽  
Polymeric Support ◽  
Supported Ionic Liquid ◽  
Gas Transport Properties ◽  
Supported Ionic Liquid Membranes

Effects of ionic liquid doping on gas transport properties of thermally rearranged poly(hydroxyimide)s

2021 ◽  
Vol 254 ◽  
pp. 117664
Author(s):  
Klaudia Nocoń-Szmajda ◽  
Aleksandra Wolińska-Grabczyk ◽  
Andrzej Jankowski ◽  
Jerzy Dryzek ◽  
Ewa Dryzek ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transport Properties ◽  
Gas Transport ◽  
Gas Transport Properties

scholarly journals Tailored CO2-Philic Anionic Poly(ionic liquid) Composite Membranes: Synthesis, Characterization, and Gas Transport Properties

2020 ◽  
Vol 8 (15) ◽  
pp. 5954-5965 ◽  
Author(s):  
Irshad Kammakakam ◽  
Jason E. Bara ◽  
Enrique M. Jackson ◽  
Josu Lertxundi ◽  
David Mecerreyes ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transport Properties ◽  
Gas Transport ◽  
Composite Membranes ◽  
Gas Transport Properties ◽  
Poly Ionic Liquid

scholarly journals Pebax-based composite membranes with high gas transport properties enhanced by ionic liquids for CO2 separation

RSC Advances ◽  
2017 ◽  
Vol 7 (11) ◽  
pp. 6422-6431 ◽  
Author(s):  
Mengdie Li ◽  
Xiangping Zhang ◽  
Shaojuan Zeng ◽  
Lu bai ◽  
Hongshuai Gao ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Transport Properties ◽  
Gas Separation ◽  
Gas Transport ◽  
Composite Membranes ◽  
Co2 Separation ◽  
Separation Performance ◽  
Gas Transport Properties ◽  
Gas Separation Performance

A series of composite membranes with high gas transport properties enhanced by IL and ZIF-8 have been developed. The influence of ionic liquid and ZIF-8 addition on gas separation performance were systematically investigated.

Gas transport properties of Pebax®/room temperature ionic liquid gel membranes

2012 ◽  
Vol 97 ◽  
pp. 73-82 ◽  
Author(s):  
Paola Bernardo ◽  
Johannes Carolus Jansen ◽  
Fabio Bazzarelli ◽  
Franco Tasselli ◽  
Alessio Fuoco ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Transport Properties ◽  
Room Temperature ◽  
Gas Transport ◽  
Room Temperature Ionic Liquid ◽  
Gas Transport Properties ◽  
Gel Membranes
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