Gas separation mechanism of CO2 selective amidoxime-poly(1-trimethylsilyl-1-propyne) membranes

Hongbo Feng; Tao Hong; Shannon M. Mahurin; Konstantinos D. Vogiatzis; Kevin R. Gmernicki; Brian K. Long; Jimmy W. Mays; Alexei P. Sokolov; Nam Goo Kang; Tomonori Saito

doi:10.1039/c7py00056a

Gas separation mechanism of CO₂ selective amidoxime-poly(1-trimethylsilyl-1-propyne) membranes

Hongbo Feng, Tao Hong, Shannon M. Mahurin, Konstantinos D. Vogiatzis, Kevin R. Gmernicki, Brian K. Long, Jimmy W. Mays, Alexei P. Sokolov, Nam Goo Kang, Tomonori Saito

Research output: Contribution to journal › Review article › peer-review

24 Scopus citations

Abstract

Polymeric membranes for CO₂ separation have drawn significant attention in academia and industry. We prepared amidoxime-functionalized poly(1-trimethylsilyl-1-propyne) (AO-PTMSP) membranes through hydrosilylation and post-polymerization modification. Compared to neat PTMSP membranes, the AO-PTMSP membranes showed significant enhancements in CO₂/N₂ gas separation performance (CO₂ permeability ∼6000 Barrer; CO₂/N₂ selectivity ∼17). This systematic study provides clear guidelines on how to tune the CO₂-philicity within PTMSP matrices and the effects on gas selectivity. Key parameters for elucidating the gas transport mechanism were discussed based on CO₂ sorption measurements and fractional free volume estimates. The effect of the AO content on CO₂/N₂ selectivity was further examined by means of density functional theory calculations. Both experimental and theoretical data provide consistent results that conclusively show that CO₂/N₂ separation performance is enhanced by increased CO₂-polymer interactions.

Original language	English
Pages (from-to)	3341-3350
Number of pages	10
Journal	Polymer Chemistry
Volume	8
Issue number	21
DOIs	https://doi.org/10.1039/c7py00056a
State	Published - 2017

Bibliographical note

Publisher Copyright:
This journal is © The Royal Society of Chemistry.

Funding

This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan

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U.S. Department of Energy

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Cite this

@article{b187b26bb51f428ca32dba08e382b439,

title = "Gas separation mechanism of CO2 selective amidoxime-poly(1-trimethylsilyl-1-propyne) membranes",

abstract = "Polymeric membranes for CO2 separation have drawn significant attention in academia and industry. We prepared amidoxime-functionalized poly(1-trimethylsilyl-1-propyne) (AO-PTMSP) membranes through hydrosilylation and post-polymerization modification. Compared to neat PTMSP membranes, the AO-PTMSP membranes showed significant enhancements in CO2/N2 gas separation performance (CO2 permeability ∼6000 Barrer; CO2/N2 selectivity ∼17). This systematic study provides clear guidelines on how to tune the CO2-philicity within PTMSP matrices and the effects on gas selectivity. Key parameters for elucidating the gas transport mechanism were discussed based on CO2 sorption measurements and fractional free volume estimates. The effect of the AO content on CO2/N2 selectivity was further examined by means of density functional theory calculations. Both experimental and theoretical data provide consistent results that conclusively show that CO2/N2 separation performance is enhanced by increased CO2-polymer interactions.",

author = "Hongbo Feng and Tao Hong and Mahurin, {Shannon M.} and Vogiatzis, {Konstantinos D.} and Gmernicki, {Kevin R.} and Long, {Brian K.} and Mays, {Jimmy W.} and Sokolov, {Alexei P.} and Kang, {Nam Goo} and Tomonori Saito",

note = "Publisher Copyright: This journal is {\textcopyright} The Royal Society of Chemistry.",

year = "2017",

doi = "10.1039/c7py00056a",

language = "English",

volume = "8",

pages = "3341--3350",

journal = "Polymer Chemistry",

issn = "1759-9954",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Gas separation mechanism of CO2 selective amidoxime-poly(1-trimethylsilyl-1-propyne) membranes

AU - Feng, Hongbo

AU - Hong, Tao

AU - Mahurin, Shannon M.

AU - Vogiatzis, Konstantinos D.

AU - Gmernicki, Kevin R.

AU - Long, Brian K.

AU - Mays, Jimmy W.

AU - Sokolov, Alexei P.

AU - Kang, Nam Goo

AU - Saito, Tomonori

PY - 2017

Y1 - 2017

N2 - Polymeric membranes for CO2 separation have drawn significant attention in academia and industry. We prepared amidoxime-functionalized poly(1-trimethylsilyl-1-propyne) (AO-PTMSP) membranes through hydrosilylation and post-polymerization modification. Compared to neat PTMSP membranes, the AO-PTMSP membranes showed significant enhancements in CO2/N2 gas separation performance (CO2 permeability ∼6000 Barrer; CO2/N2 selectivity ∼17). This systematic study provides clear guidelines on how to tune the CO2-philicity within PTMSP matrices and the effects on gas selectivity. Key parameters for elucidating the gas transport mechanism were discussed based on CO2 sorption measurements and fractional free volume estimates. The effect of the AO content on CO2/N2 selectivity was further examined by means of density functional theory calculations. Both experimental and theoretical data provide consistent results that conclusively show that CO2/N2 separation performance is enhanced by increased CO2-polymer interactions.

AB - Polymeric membranes for CO2 separation have drawn significant attention in academia and industry. We prepared amidoxime-functionalized poly(1-trimethylsilyl-1-propyne) (AO-PTMSP) membranes through hydrosilylation and post-polymerization modification. Compared to neat PTMSP membranes, the AO-PTMSP membranes showed significant enhancements in CO2/N2 gas separation performance (CO2 permeability ∼6000 Barrer; CO2/N2 selectivity ∼17). This systematic study provides clear guidelines on how to tune the CO2-philicity within PTMSP matrices and the effects on gas selectivity. Key parameters for elucidating the gas transport mechanism were discussed based on CO2 sorption measurements and fractional free volume estimates. The effect of the AO content on CO2/N2 selectivity was further examined by means of density functional theory calculations. Both experimental and theoretical data provide consistent results that conclusively show that CO2/N2 separation performance is enhanced by increased CO2-polymer interactions.

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DO - 10.1039/c7py00056a

M3 - Review article

AN - SCOPUS:85021710271

SN - 1759-9954

VL - 8

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EP - 3350

JO - Polymer Chemistry

JF - Polymer Chemistry

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