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Title: Molecular dynamics study of carbon dioxide and nitrogen selectivity through poly[bis((methoxyethoxy)ethoxy)phosphazene] (MEEP) membrane

Journal Article · · Chemical Engineering Science

Here, a molecular dynamics simulation model was developed to comprehensively understand carbon dioxide over nitrogen (CO2/N2) selectivity through polyphosphazene-based membrane comprising of poly[bis((methoxyethoxy)ethoxy)phosphazene] (MEEP) selective layer at the molecular level. The effects of temperature, pressure, and initial feed gas composition on the CO2 transport on a polymer membrane were studied. The computed free energy and density profile of the permeating gas mixture exhibited that CO2 molecules express higher interactions with the membrane than N2 molecules, resulting in higher CO2/N2 selectivity. Statistical analysis of gas molecules (CO2, water (H2O), and N2) transportation suggested that hydro- and CO2-philic functional groups in the membrane significantly impact CO2 permeability and CO2/N2 selectivity. This study suggested that Lewis acid–base and hydrogen bonding combinations contribute to CO2 permeation and CO2/N2 selectivity. An equal CO2/N2 selectivity was observed with and without water vapor in the feed gas suggesting that water does not hinder CO2 transport through the membrane.

Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC07-05ID14517
OSTI ID:
2274765
Report Number(s):
INL/JOU-23-72481-Revision-0
Journal Information:
Chemical Engineering Science, Vol. 284; ISSN 0009-2509
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (57)

Compatibility study of nanofiltration and reverse osmosis membranes with 1-cyclohexylpiperidenium bicarbonate solutions journal April 2017
Diffusion membrane generation of 1-cyclohexylpiperidinium bicarbonate journal August 2019
Technoeconomic analysis of oxygen-nitrogen separation for oxygen enrichment using membranes journal August 2021
Electrochemical leaching of critical materials from lithium-ion batteries: A comparative life cycle assessment journal June 2023
Techno-economic analysis of carbon dioxide capture from low concentration sources using membranes journal October 2023
Life-cycle assessment of five microalgae-to-biofuels processes of varying complexity journal July 2015
Capturing CO2 by a Fixed-Site-Carrier Polyvinylamine-/Matrimid-Facilitated Transport Membrane journal April 2022
Absorption of CO2 in Aqueous Diglycolamine journal December 2005
Ionic Conduction in Polyphosphazene Solids and Gels:  13C, 31P, and 15N NMR Spectroscopy and Molecular Dynamics Simulations journal January 1999
Nanomaterials as catalysts for CO2 transformation into value-added products: A review journal April 2023
Technoeconomic analysis of five microalgae-to-biofuels processes of varying complexity journal October 2011
Strong Lewis Acid−Lewis Base Interactions between Supercritical Carbon Dioxide and Carboxylic Acids:  Effects on Self-association journal September 2003
Gas transport properties of poly(ether-b-amide) segmented block copolymers journal January 2000
Preparation of defect-free asymmetric gas separation membranes with dihydrolevoglucosenone (CyreneTM) as a greener polar aprotic solvent journal February 2022
Interfacial Water Structure Associated with Phospholipid Membranes Studied by Phase-Sensitive Vibrational Sum Frequency Generation Spectroscopy journal August 2010
Global food system emissions could preclude achieving the 1.5° and 2°C climate change targets journal November 2020
Calculating free energies using average force journal November 2001
Adaptive biasing force method for scalar and vector free energy calculations journal April 2008
Effect of High Pressure CO2 on the Structure of PMMA: A FT-IR Study journal November 2011
Electrochemical production of syngas from CO 2 captured in switchable polarity solvents journal January 2018
Temperature and pressure dependence of hydrogen bond strength: A perturbation molecular orbital approach journal November 1998
Using collective variables to drive molecular dynamics simulations journal December 2013
Carbon dioxide selective mixed-matrix membranes formulation and characterization using rubbery substituted polyphosphazene journal October 2008
C–H⋯O non-classical hydrogen bonding in the stereomechanics of organic transformations: theory and recognition journal January 2013
Specific Intermolecular Interaction of Carbon Dioxide with Polymers journal January 1996
Graphene oxide reinforced facilitated transport membrane with poly(ionic liquid) and ionic liquid carriers for CO2/N2 separation journal November 2021
High-Performance Polymers for Membrane CO 2 /N 2 Separation journal August 2016
On the Mechanism of Ion Transport through Polyphosphazene Solid Polymer Electrolytes:  NMR, IR, and Raman Spectroscopic Studies and Computational Analysis of 15 N-Labeled Polyphosphazenes journal April 2003
PACKMOL: A package for building initial configurations for molecular dynamics simulations journal October 2009
A review of direct air capture (DAC): scaling up commercial technologies and innovating for the future journal April 2021
Life Cycle Assessment of Innovative Carbon Dioxide Selective Membranes from Low Carbon Emission Sources: A Comparative Study journal April 2023
Lipid Carbonyl Groups Terminate the Hydrogen Bond Network of Membrane-Bound Water journal October 2015
Gas permeability and ideal selectivity of poly[bis-(phenoxy)phosphazene], poly[bis-(4-tert-butylphenoxy)phosphazene], and poly[bis-(3,5-di-tert-butylphenoxy)1.2(chloro)0.8phosphazene] journal July 2004
Gas permeability in rubbery polyphosphazene membranes journal September 2006
Mixed substituent ether‐containing polyphosphazene/poly(bis‐phenoxyphosphazene) blends as membranes for CO 2 separation from N 2 journal November 2020
Maximizing the right stuff: The trade-off between membrane permeability and selectivity journal June 2017
Vapor–liquid equilibria of mixtures containing alkanes, carbon dioxide, and nitrogen journal July 2001
A modified TIP3P water potential for simulation with Ewald summation journal November 2004
Role of Facilitated Transport Membranes and Composite Membranes for Efficient CO 2 Capture - A Review journal April 2016
Cooperative C−H···O Hydrogen Bonding in CO 2 −Lewis Base Complexes:  Implications for Solvation in Supercritical CO 2 journal October 2002
Overview on Pressure Swing Adsorption (PSA) as CO2 Capture Technology: State-of-the-Art, Limits and Potentials journal July 2017
The upper bound revisited journal July 2008
Thermal degradation of amines for CO2 capture journal May 2012
Molecular design and fabrication of PIM-1/polyphosphazene blend membranes with high performance for CO2/N2 separation journal December 2021
Carbon Dioxide Capture by Pressure Swing Adsorption journal July 2017
Continuous enzymatic hydrolysis of lignocellulosic biomass in a membrane-reactor system: Continuous enzymatic hydrolysis of lignocellulosic biomass in a membrane-reactor system journal February 2018
An initial study of hexavalent phosphazene salts as draw solutes in forward osmosis journal March 2013
Switchable polarity solvents as draw solutes for forward osmosis journal March 2013
LAMMPS - a flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales journal February 2022
Combined ab Initio Quantum Mechanics and Classical Molecular Dynamics Studies of Polyphosphazene Polymer Electrolytes:  Competitive Solvation of Li + and LiCF 3 SO 3 journal October 2004
Development and testing of a general amber force field journal January 2004
Automatic atom type and bond type perception in molecular mechanical calculations journal October 2006
Deriving osmotic pressures of draw solutes used in osmotically driven membrane processes journal March 2013
Theoretical insights into CO2/N2 selectivity of the porous ionic liquids constructed by ion-dipole interactions journal December 2021
A Review of CO2 Capture by Absorption and Adsorption journal January 2012
Synergistic and competitive effect of H2O on CO2 adsorption capture: Mechanism explanations based on molecular dynamic simulation journal October 2021
Lewis Base Polymers for Modifying Sorption and Regeneration Abilities of Amine-Based Carbon Dioxide Capture Materials journal November 2014