Perfluorocarbon-based supported liquid membranes for O2/N 2 separation

B. Castro-Domínguez; P. Leelachaikul; A. Takagaki; T. Sugawara; R. Kikuchi; S. T. Oyama

doi:10.1016/j.seppur.2013.05.023

Perfluorocarbon-based supported liquid membranes for O₂/N ₂ separation

B. Castro-Domínguez, P. Leelachaikul, A. Takagaki, T. Sugawara, R. Kikuchi, S. T. Oyama

Department of Chemical Engineering

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

16 Citations (SciVal)

Abstract

Air separation is an important commercial process because oxygen and nitrogen are used in several vital industrial processes. This paper reports the implementation of perfluorotributylamine (PFTBA) imbued in porous alumina tubes as a supported liquid membrane to carry out the separation of O₂ and N₂. The PFTBA-supported membrane reached an average O ₂/N₂ selectivity of 60 with an O₂ permeance of 8.0 × 10^-10 mol m^-2 s^-1 Pa^-1. It is shown that the membrane's selectivity increases as the temperature increases but the stability of the membrane is reduced. Moreover, the separation of H₂ and N₂ was studied to provide insight on the functioning of the membrane and a H₂/N₂ selectivity of 100 was observed with a H₂ permeance of 1.0 × 10^-9 mol m^-2 s^-1 Pa^-1. The permeance order was H ₂ > O₂ > N₂, so the size of the permeating species was found to be an important contributor to the permeance. PFTBA presents an excellent separation performance when compared with conventional supported ionic liquid membranes (SILMs). For instance, 1-ethyl-3-methylimidazolium tetrafluoroborate [emim][BF₄] showed a maximum O₂/N₂ selectivity of 6 and permeance of 3.4 × 10^-12 mol m^-2 s^-1 Pa^-1.

Original language	English
Pages (from-to)	19-24
Number of pages	6
Journal	Separation and Purification Technology
Volume	116
DOIs	https://doi.org/10.1016/j.seppur.2013.05.023
Publication status	Published - 15 Sept 2013

Keywords

Air separation
H/N separation
O/N separation
Perfluorocarbon
Perfluorotributylamine
Supported liquid membranes

ASJC Scopus subject areas

Analytical Chemistry
Filtration and Separation

Access to Document

10.1016/j.seppur.2013.05.023

Cite this

@article{e8a8006b0da24b548888873b01d2e9a1,

title = "Perfluorocarbon-based supported liquid membranes for O2/N 2 separation",

abstract = "Air separation is an important commercial process because oxygen and nitrogen are used in several vital industrial processes. This paper reports the implementation of perfluorotributylamine (PFTBA) imbued in porous alumina tubes as a supported liquid membrane to carry out the separation of O2 and N2. The PFTBA-supported membrane reached an average O 2/N2 selectivity of 60 with an O2 permeance of 8.0 × 10-10 mol m-2 s-1 Pa-1. It is shown that the membrane's selectivity increases as the temperature increases but the stability of the membrane is reduced. Moreover, the separation of H2 and N2 was studied to provide insight on the functioning of the membrane and a H2/N2 selectivity of 100 was observed with a H2 permeance of 1.0 × 10-9 mol m-2 s-1 Pa-1. The permeance order was H 2 > O2 > N2, so the size of the permeating species was found to be an important contributor to the permeance. PFTBA presents an excellent separation performance when compared with conventional supported ionic liquid membranes (SILMs). For instance, 1-ethyl-3-methylimidazolium tetrafluoroborate [emim][BF4] showed a maximum O2/N2 selectivity of 6 and permeance of 3.4 × 10-12 mol m-2 s-1 Pa-1.",

keywords = "Air separation, H/N separation, O/N separation, Perfluorocarbon, Perfluorotributylamine, Supported liquid membranes",

author = "B. Castro-Dom{\'i}nguez and P. Leelachaikul and A. Takagaki and T. Sugawara and R. Kikuchi and Oyama, {S. T.}",

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T1 - Perfluorocarbon-based supported liquid membranes for O2/N 2 separation

AU - Castro-Domínguez, B.

AU - Leelachaikul, P.

AU - Takagaki, A.

AU - Sugawara, T.

AU - Kikuchi, R.

AU - Oyama, S. T.

PY - 2013/9/15

Y1 - 2013/9/15

N2 - Air separation is an important commercial process because oxygen and nitrogen are used in several vital industrial processes. This paper reports the implementation of perfluorotributylamine (PFTBA) imbued in porous alumina tubes as a supported liquid membrane to carry out the separation of O2 and N2. The PFTBA-supported membrane reached an average O 2/N2 selectivity of 60 with an O2 permeance of 8.0 × 10-10 mol m-2 s-1 Pa-1. It is shown that the membrane's selectivity increases as the temperature increases but the stability of the membrane is reduced. Moreover, the separation of H2 and N2 was studied to provide insight on the functioning of the membrane and a H2/N2 selectivity of 100 was observed with a H2 permeance of 1.0 × 10-9 mol m-2 s-1 Pa-1. The permeance order was H 2 > O2 > N2, so the size of the permeating species was found to be an important contributor to the permeance. PFTBA presents an excellent separation performance when compared with conventional supported ionic liquid membranes (SILMs). For instance, 1-ethyl-3-methylimidazolium tetrafluoroborate [emim][BF4] showed a maximum O2/N2 selectivity of 6 and permeance of 3.4 × 10-12 mol m-2 s-1 Pa-1.

AB - Air separation is an important commercial process because oxygen and nitrogen are used in several vital industrial processes. This paper reports the implementation of perfluorotributylamine (PFTBA) imbued in porous alumina tubes as a supported liquid membrane to carry out the separation of O2 and N2. The PFTBA-supported membrane reached an average O 2/N2 selectivity of 60 with an O2 permeance of 8.0 × 10-10 mol m-2 s-1 Pa-1. It is shown that the membrane's selectivity increases as the temperature increases but the stability of the membrane is reduced. Moreover, the separation of H2 and N2 was studied to provide insight on the functioning of the membrane and a H2/N2 selectivity of 100 was observed with a H2 permeance of 1.0 × 10-9 mol m-2 s-1 Pa-1. The permeance order was H 2 > O2 > N2, so the size of the permeating species was found to be an important contributor to the permeance. PFTBA presents an excellent separation performance when compared with conventional supported ionic liquid membranes (SILMs). For instance, 1-ethyl-3-methylimidazolium tetrafluoroborate [emim][BF4] showed a maximum O2/N2 selectivity of 6 and permeance of 3.4 × 10-12 mol m-2 s-1 Pa-1.

KW - Air separation

KW - H/N separation

KW - O/N separation

KW - Perfluorocarbon

KW - Perfluorotributylamine

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