Interfacial sealing and functionalization of polysulfone/SAPO-34 mixed matrix membrane using acetate-based ionic liquid in post-impregnation for CO2 capture

N. N.R. Ahmad, C. P. Leo, Abdul Wahab Mohammad, A. L. Ahmad

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The CO2 selective ionic liquids (ILs) have been extensively studied in recent years, but their applications are limited by the high viscosity and cost. In this work, acetate-based ionic liquid was used to enhance and functionalize the interface between polysulfone (PSf) and SAPO-34 zeolite in the asymmetric mixed matrix membrane (MMM) prepared via phase inversion. The MMMs were post-modified by immersing the membranes into carboxylate IL solution (1-butyl-3-methylimidazolium acetate). The effects of IL concentration on the membrane morphology and separation performance in CO2 separation were studied. Fourier transform infrared spectra and energy-dispersive X-ray spectra showed that the IL was successfully incorporated into MMM. The post-impregnation of the membrane with IL improved the interface contact between the polymer and zeolite. The interfacial sealing using IL further enhanced the CO2/N2 selectivity of IL-modified MMM, about 818% higher than the CO2/N2 selectivity of unmodified MMM. The maximum selectivity of 39.60 was achieved using PSf membrane incorporated with 5 wt% of SAPO zeolite loading and modified with 0.4 M of IL. This membrane also sustained its separation performance even wet gas was fed.

Original languageEnglish
Pages (from-to)439-448
Number of pages10
JournalSeparation and Purification Technology
Volume197
DOIs
Publication statusPublished - 31 May 2018

Fingerprint

Ionic Liquids
Polysulfones
Ionic liquids
Impregnation
Acetates
Membranes
Zeolites
polysulfone P 1700
Contacts (fluid mechanics)
Fourier transforms
Polymers
Gases
Viscosity
Infrared radiation
X rays

Keywords

  • CO separation
  • Ionic liquid
  • Mixed matrix membrane
  • Polysulfone
  • SAPO-34

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

@article{9c0182a95fb74dd6bc989dae820d9c4f,
title = "Interfacial sealing and functionalization of polysulfone/SAPO-34 mixed matrix membrane using acetate-based ionic liquid in post-impregnation for CO2 capture",
abstract = "The CO2 selective ionic liquids (ILs) have been extensively studied in recent years, but their applications are limited by the high viscosity and cost. In this work, acetate-based ionic liquid was used to enhance and functionalize the interface between polysulfone (PSf) and SAPO-34 zeolite in the asymmetric mixed matrix membrane (MMM) prepared via phase inversion. The MMMs were post-modified by immersing the membranes into carboxylate IL solution (1-butyl-3-methylimidazolium acetate). The effects of IL concentration on the membrane morphology and separation performance in CO2 separation were studied. Fourier transform infrared spectra and energy-dispersive X-ray spectra showed that the IL was successfully incorporated into MMM. The post-impregnation of the membrane with IL improved the interface contact between the polymer and zeolite. The interfacial sealing using IL further enhanced the CO2/N2 selectivity of IL-modified MMM, about 818{\%} higher than the CO2/N2 selectivity of unmodified MMM. The maximum selectivity of 39.60 was achieved using PSf membrane incorporated with 5 wt{\%} of SAPO zeolite loading and modified with 0.4 M of IL. This membrane also sustained its separation performance even wet gas was fed.",
keywords = "CO separation, Ionic liquid, Mixed matrix membrane, Polysulfone, SAPO-34",
author = "Ahmad, {N. N.R.} and Leo, {C. P.} and Mohammad, {Abdul Wahab} and Ahmad, {A. L.}",
year = "2018",
month = "5",
day = "31",
doi = "10.1016/j.seppur.2017.12.054",
language = "English",
volume = "197",
pages = "439--448",
journal = "Separation and Purification Technology",
issn = "1383-5866",
publisher = "Elsevier",

}

TY - JOUR

T1 - Interfacial sealing and functionalization of polysulfone/SAPO-34 mixed matrix membrane using acetate-based ionic liquid in post-impregnation for CO2 capture

AU - Ahmad, N. N.R.

AU - Leo, C. P.

AU - Mohammad, Abdul Wahab

AU - Ahmad, A. L.

PY - 2018/5/31

Y1 - 2018/5/31

N2 - The CO2 selective ionic liquids (ILs) have been extensively studied in recent years, but their applications are limited by the high viscosity and cost. In this work, acetate-based ionic liquid was used to enhance and functionalize the interface between polysulfone (PSf) and SAPO-34 zeolite in the asymmetric mixed matrix membrane (MMM) prepared via phase inversion. The MMMs were post-modified by immersing the membranes into carboxylate IL solution (1-butyl-3-methylimidazolium acetate). The effects of IL concentration on the membrane morphology and separation performance in CO2 separation were studied. Fourier transform infrared spectra and energy-dispersive X-ray spectra showed that the IL was successfully incorporated into MMM. The post-impregnation of the membrane with IL improved the interface contact between the polymer and zeolite. The interfacial sealing using IL further enhanced the CO2/N2 selectivity of IL-modified MMM, about 818% higher than the CO2/N2 selectivity of unmodified MMM. The maximum selectivity of 39.60 was achieved using PSf membrane incorporated with 5 wt% of SAPO zeolite loading and modified with 0.4 M of IL. This membrane also sustained its separation performance even wet gas was fed.

AB - The CO2 selective ionic liquids (ILs) have been extensively studied in recent years, but their applications are limited by the high viscosity and cost. In this work, acetate-based ionic liquid was used to enhance and functionalize the interface between polysulfone (PSf) and SAPO-34 zeolite in the asymmetric mixed matrix membrane (MMM) prepared via phase inversion. The MMMs were post-modified by immersing the membranes into carboxylate IL solution (1-butyl-3-methylimidazolium acetate). The effects of IL concentration on the membrane morphology and separation performance in CO2 separation were studied. Fourier transform infrared spectra and energy-dispersive X-ray spectra showed that the IL was successfully incorporated into MMM. The post-impregnation of the membrane with IL improved the interface contact between the polymer and zeolite. The interfacial sealing using IL further enhanced the CO2/N2 selectivity of IL-modified MMM, about 818% higher than the CO2/N2 selectivity of unmodified MMM. The maximum selectivity of 39.60 was achieved using PSf membrane incorporated with 5 wt% of SAPO zeolite loading and modified with 0.4 M of IL. This membrane also sustained its separation performance even wet gas was fed.

KW - CO separation

KW - Ionic liquid

KW - Mixed matrix membrane

KW - Polysulfone

KW - SAPO-34

UR - http://www.scopus.com/inward/record.url?scp=85041469853&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85041469853&partnerID=8YFLogxK

U2 - 10.1016/j.seppur.2017.12.054

DO - 10.1016/j.seppur.2017.12.054

M3 - Article

VL - 197

SP - 439

EP - 448

JO - Separation and Purification Technology

JF - Separation and Purification Technology

SN - 1383-5866

ER -