Organic-inorganic CO2 selective membranes prepared by the sol-gel process

C. Nistor; S. Shishatskiy; M. Popa; S. P. Nunes

doi:10.1080/01496390903212698

Organic-inorganic CO₂ selective membranes prepared by the sol-gel process

C. Nistor, S. Shishatskiy, M. Popa, S. P. Nunes^*

^*Corresponding author for this work

Advanced Membranes and Porous Materials Center

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

Composite membranes prepared from mixtures of 3-glycidoxypropyl trimethoxysilane (GPTMS) and different diamines containing polyether segments were synthesized by the sol-gel process. The membranes were obtained by coating asymmetric porous polyacrylonitrile (PAN) supports with the silane solutions. The composite membranes were characterized by single and mixed gas permeation and by atomic force microscopy. The selectivity increased by increasing the molecular weight of the poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol)bis(2-aminopropyl ether) (PAPE), and also with the addition of poly(ethylene glycol) (PEG) to the coating solution. The CO₂/N₂ selectivity values up to 75 and the CO₂/CH₄ selectivity values up to 20 were measured. High gas selectivity was also confirmed by measurements with mixed gas feed, although slightly lower than in the measurements with single gases.

Original language	English (US)
Pages (from-to)	3392-3411
Number of pages	20
Journal	Separation Science and Technology (Philadelphia)
Volume	44
Issue number	14
DOIs	https://doi.org/10.1080/01496390903212698
State	Published - 2009

Bibliographical note

Publisher Copyright:
© Taylor & Francis Group, LLC.

Keywords

CO/N separation
Epoxy silane
Gas separation
Organic-inorganic membranes
Sol-gel

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Process Chemistry and Technology
Filtration and Separation

Access to Document

10.1080/01496390903212698

Cite this

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title = "Organic-inorganic CO2 selective membranes prepared by the sol-gel process",

abstract = "Composite membranes prepared from mixtures of 3-glycidoxypropyl trimethoxysilane (GPTMS) and different diamines containing polyether segments were synthesized by the sol-gel process. The membranes were obtained by coating asymmetric porous polyacrylonitrile (PAN) supports with the silane solutions. The composite membranes were characterized by single and mixed gas permeation and by atomic force microscopy. The selectivity increased by increasing the molecular weight of the poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol)bis(2-aminopropyl ether) (PAPE), and also with the addition of poly(ethylene glycol) (PEG) to the coating solution. The CO2/N2 selectivity values up to 75 and the CO2/CH4 selectivity values up to 20 were measured. High gas selectivity was also confirmed by measurements with mixed gas feed, although slightly lower than in the measurements with single gases.",

keywords = "CO/N separation, Epoxy silane, Gas separation, Organic-inorganic membranes, Sol-gel",

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T1 - Organic-inorganic CO2 selective membranes prepared by the sol-gel process

AU - Nistor, C.

AU - Shishatskiy, S.

AU - Popa, M.

AU - Nunes, S. P.

N1 - Publisher Copyright: © Taylor & Francis Group, LLC.

PY - 2009

Y1 - 2009

N2 - Composite membranes prepared from mixtures of 3-glycidoxypropyl trimethoxysilane (GPTMS) and different diamines containing polyether segments were synthesized by the sol-gel process. The membranes were obtained by coating asymmetric porous polyacrylonitrile (PAN) supports with the silane solutions. The composite membranes were characterized by single and mixed gas permeation and by atomic force microscopy. The selectivity increased by increasing the molecular weight of the poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol)bis(2-aminopropyl ether) (PAPE), and also with the addition of poly(ethylene glycol) (PEG) to the coating solution. The CO2/N2 selectivity values up to 75 and the CO2/CH4 selectivity values up to 20 were measured. High gas selectivity was also confirmed by measurements with mixed gas feed, although slightly lower than in the measurements with single gases.

AB - Composite membranes prepared from mixtures of 3-glycidoxypropyl trimethoxysilane (GPTMS) and different diamines containing polyether segments were synthesized by the sol-gel process. The membranes were obtained by coating asymmetric porous polyacrylonitrile (PAN) supports with the silane solutions. The composite membranes were characterized by single and mixed gas permeation and by atomic force microscopy. The selectivity increased by increasing the molecular weight of the poly(propylene glycol)-block-poly(ethylene glycol)-block-poly(propylene glycol)bis(2-aminopropyl ether) (PAPE), and also with the addition of poly(ethylene glycol) (PEG) to the coating solution. The CO2/N2 selectivity values up to 75 and the CO2/CH4 selectivity values up to 20 were measured. High gas selectivity was also confirmed by measurements with mixed gas feed, although slightly lower than in the measurements with single gases.

KW - CO/N separation

KW - Epoxy silane

KW - Gas separation

KW - Organic-inorganic membranes

KW - Sol-gel

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