Effect of 1-butyl-3-methylimidazolium nitrate on separation properties of polymer/AgNO3 membranes for propylene/propane mixtures: Comparison between poly(2-ethyl-2-oxazoline) and poly(ethylene oxide)

Sang Wook Kang, Jinkee Hong, Jong Hak Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A previous study showed that ionic liquids enable AgNO3, which is not readily reduced to silver nanoparticles in the solid state, to be an active olefin carrier in silver polymer electrolyte membranes. We report the effects of an ionic liquid, i.e. 1-butyl-3-methylimidazolium nitrate (BMIM+NO3 -), on the separation properties of polymer/AgNO3 complex membranes for propylene/propane mixtures. Interestingly, the change in membrane separation properties with the ionic liquid concentration was completely different between poly(2-ethyl-2-oxazoline) (POZ) and poly(ethylene oxide) (PEO). In the POZ/AgNO3 complex membranes, both the selectivity of propylene/ propane and the mixed gas permeance increased up to a 0.1 mole ratio of ionic liquid, after which they decreased. The enhancement of the membrane performance results from an increase in the silver ion activity, whereas the decrease was attributed to the barrier effect of large amounts of IL and less effectiveness of IL in controlling the ionic interactions. On the other hand, in the PEO/AgNO3 membranes, the selectivity increased with increasing ionic liquid, whereas the mixed gas permeance decreased. The increase in selectivity comes from the enhanced silver ion activity, whereas the decrease in permeance was attributed to the decrease in interfacial voids in the membranes.

Original languageEnglish
Pages (from-to)79-83
Number of pages5
JournalMacromolecular Research
Volume19
Issue number1
DOIs
Publication statusPublished - 2011 Jan 1

Fingerprint

Propane
Polyethylene oxides
Ionic Liquids
Propylene
Nitrates
Polymers
Ionic liquids
Membranes
Silver
Gases
Ions
Alkenes
poly(2-ethyl-2-oxazoline)
1-butyl-3-methylimidazolium nitrate
propylene
Electrolytes
Olefins
Nanoparticles

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Cite this

@article{c32cb998f29340e3bd039544bc6148bc,
title = "Effect of 1-butyl-3-methylimidazolium nitrate on separation properties of polymer/AgNO3 membranes for propylene/propane mixtures: Comparison between poly(2-ethyl-2-oxazoline) and poly(ethylene oxide)",
abstract = "A previous study showed that ionic liquids enable AgNO3, which is not readily reduced to silver nanoparticles in the solid state, to be an active olefin carrier in silver polymer electrolyte membranes. We report the effects of an ionic liquid, i.e. 1-butyl-3-methylimidazolium nitrate (BMIM+NO3 -), on the separation properties of polymer/AgNO3 complex membranes for propylene/propane mixtures. Interestingly, the change in membrane separation properties with the ionic liquid concentration was completely different between poly(2-ethyl-2-oxazoline) (POZ) and poly(ethylene oxide) (PEO). In the POZ/AgNO3 complex membranes, both the selectivity of propylene/ propane and the mixed gas permeance increased up to a 0.1 mole ratio of ionic liquid, after which they decreased. The enhancement of the membrane performance results from an increase in the silver ion activity, whereas the decrease was attributed to the barrier effect of large amounts of IL and less effectiveness of IL in controlling the ionic interactions. On the other hand, in the PEO/AgNO3 membranes, the selectivity increased with increasing ionic liquid, whereas the mixed gas permeance decreased. The increase in selectivity comes from the enhanced silver ion activity, whereas the decrease in permeance was attributed to the decrease in interfacial voids in the membranes.",
author = "Kang, {Sang Wook} and Jinkee Hong and Kim, {Jong Hak}",
year = "2011",
month = "1",
day = "1",
doi = "10.1007/s13233-011-0105-8",
language = "English",
volume = "19",
pages = "79--83",
journal = "Macromolecular Research",
issn = "1598-5032",
publisher = "Polymer Society of Korea",
number = "1",

}

TY - JOUR

T1 - Effect of 1-butyl-3-methylimidazolium nitrate on separation properties of polymer/AgNO3 membranes for propylene/propane mixtures

T2 - Comparison between poly(2-ethyl-2-oxazoline) and poly(ethylene oxide)

AU - Kang, Sang Wook

AU - Hong, Jinkee

AU - Kim, Jong Hak

PY - 2011/1/1

Y1 - 2011/1/1

N2 - A previous study showed that ionic liquids enable AgNO3, which is not readily reduced to silver nanoparticles in the solid state, to be an active olefin carrier in silver polymer electrolyte membranes. We report the effects of an ionic liquid, i.e. 1-butyl-3-methylimidazolium nitrate (BMIM+NO3 -), on the separation properties of polymer/AgNO3 complex membranes for propylene/propane mixtures. Interestingly, the change in membrane separation properties with the ionic liquid concentration was completely different between poly(2-ethyl-2-oxazoline) (POZ) and poly(ethylene oxide) (PEO). In the POZ/AgNO3 complex membranes, both the selectivity of propylene/ propane and the mixed gas permeance increased up to a 0.1 mole ratio of ionic liquid, after which they decreased. The enhancement of the membrane performance results from an increase in the silver ion activity, whereas the decrease was attributed to the barrier effect of large amounts of IL and less effectiveness of IL in controlling the ionic interactions. On the other hand, in the PEO/AgNO3 membranes, the selectivity increased with increasing ionic liquid, whereas the mixed gas permeance decreased. The increase in selectivity comes from the enhanced silver ion activity, whereas the decrease in permeance was attributed to the decrease in interfacial voids in the membranes.

AB - A previous study showed that ionic liquids enable AgNO3, which is not readily reduced to silver nanoparticles in the solid state, to be an active olefin carrier in silver polymer electrolyte membranes. We report the effects of an ionic liquid, i.e. 1-butyl-3-methylimidazolium nitrate (BMIM+NO3 -), on the separation properties of polymer/AgNO3 complex membranes for propylene/propane mixtures. Interestingly, the change in membrane separation properties with the ionic liquid concentration was completely different between poly(2-ethyl-2-oxazoline) (POZ) and poly(ethylene oxide) (PEO). In the POZ/AgNO3 complex membranes, both the selectivity of propylene/ propane and the mixed gas permeance increased up to a 0.1 mole ratio of ionic liquid, after which they decreased. The enhancement of the membrane performance results from an increase in the silver ion activity, whereas the decrease was attributed to the barrier effect of large amounts of IL and less effectiveness of IL in controlling the ionic interactions. On the other hand, in the PEO/AgNO3 membranes, the selectivity increased with increasing ionic liquid, whereas the mixed gas permeance decreased. The increase in selectivity comes from the enhanced silver ion activity, whereas the decrease in permeance was attributed to the decrease in interfacial voids in the membranes.

UR - http://www.scopus.com/inward/record.url?scp=79955903018&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955903018&partnerID=8YFLogxK

U2 - 10.1007/s13233-011-0105-8

DO - 10.1007/s13233-011-0105-8

M3 - Article

AN - SCOPUS:79955903018

VL - 19

SP - 79

EP - 83

JO - Macromolecular Research

JF - Macromolecular Research

SN - 1598-5032

IS - 1

ER -