Permeation characteristics of butane isomers through MFI-type zeolitic membranes

Takaaki Matsufuji; Norikazu Nishiyama; Korekazu Ueyama; Masahiko Matsukata

doi:10.1016/S0920-5861(99)00284-9

Permeation characteristics of butane isomers through MFI-type zeolitic membranes

Takaaki Matsufuji, Norikazu Nishiyama, Korekazu Ueyama, Masahiko Matsukata^*

^*Corresponding author for this work

School of Advanced Science and Engineering

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

31 Citations (Scopus)

Abstract

MFI-type◆ zeolitic membranes were prepared by a vapor-phase transport method on porous α-alumina flat disks. Pure or mixed gas permeation measurements of butane isomers were performed at 375 K using two methods: pressure gradient (PG) and concentration gradient (CG) methods. Pure gas permeation measurements of H₂, He, CH₄, N₂, O₂, CO₂ and SF₆ were also carried out using PG method. Counter-diffusion of helium as a sweep gas was evaluated by determining the gas composition at the outlet of the feed side. It was confirmed that the counter-diffusion of helium occurs only when the total pressure of the feed side was <80kPa. In the mixed gas permeation measurements, the value of separation factor depended on the method of gas permeation. The separation factors of n-butane to i-butane were ca. 10 in the PG method and 30-60 in the CG method.

Original language	English
Pages (from-to)	265-273
Number of pages	9
Journal	Catalysis Today
Volume	56
Issue number	1-3
DOIs	https://doi.org/10.1016/S0920-5861(99)00284-9
Publication status	Published - 2000 Feb 25
Event	3rd International Conference on Catalysis in Membrane Reactors (ICCMR 98) - Copenhagen, Denmark Duration: 1998 Sept 8 → 1998 Sept 10

Keywords

Butane isomers
Concentration gradient
Pressure gradient
Zeolitic membranes

ASJC Scopus subject areas

Catalysis
Chemistry(all)

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10.1016/S0920-5861(99)00284-9

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title = "Permeation characteristics of butane isomers through MFI-type zeolitic membranes",

abstract = "MFI-type◆ zeolitic membranes were prepared by a vapor-phase transport method on porous α-alumina flat disks. Pure or mixed gas permeation measurements of butane isomers were performed at 375 K using two methods: pressure gradient (PG) and concentration gradient (CG) methods. Pure gas permeation measurements of H2, He, CH4, N2, O2, CO2 and SF6 were also carried out using PG method. Counter-diffusion of helium as a sweep gas was evaluated by determining the gas composition at the outlet of the feed side. It was confirmed that the counter-diffusion of helium occurs only when the total pressure of the feed side was <80kPa. In the mixed gas permeation measurements, the value of separation factor depended on the method of gas permeation. The separation factors of n-butane to i-butane were ca. 10 in the PG method and 30-60 in the CG method.",

keywords = "Butane isomers, Concentration gradient, Pressure gradient, Zeolitic membranes",

author = "Takaaki Matsufuji and Norikazu Nishiyama and Korekazu Ueyama and Masahiko Matsukata",

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T1 - Permeation characteristics of butane isomers through MFI-type zeolitic membranes

AU - Matsufuji, Takaaki

AU - Nishiyama, Norikazu

AU - Ueyama, Korekazu

AU - Matsukata, Masahiko

PY - 2000/2/25

Y1 - 2000/2/25

N2 - MFI-type◆ zeolitic membranes were prepared by a vapor-phase transport method on porous α-alumina flat disks. Pure or mixed gas permeation measurements of butane isomers were performed at 375 K using two methods: pressure gradient (PG) and concentration gradient (CG) methods. Pure gas permeation measurements of H2, He, CH4, N2, O2, CO2 and SF6 were also carried out using PG method. Counter-diffusion of helium as a sweep gas was evaluated by determining the gas composition at the outlet of the feed side. It was confirmed that the counter-diffusion of helium occurs only when the total pressure of the feed side was <80kPa. In the mixed gas permeation measurements, the value of separation factor depended on the method of gas permeation. The separation factors of n-butane to i-butane were ca. 10 in the PG method and 30-60 in the CG method.

AB - MFI-type◆ zeolitic membranes were prepared by a vapor-phase transport method on porous α-alumina flat disks. Pure or mixed gas permeation measurements of butane isomers were performed at 375 K using two methods: pressure gradient (PG) and concentration gradient (CG) methods. Pure gas permeation measurements of H2, He, CH4, N2, O2, CO2 and SF6 were also carried out using PG method. Counter-diffusion of helium as a sweep gas was evaluated by determining the gas composition at the outlet of the feed side. It was confirmed that the counter-diffusion of helium occurs only when the total pressure of the feed side was <80kPa. In the mixed gas permeation measurements, the value of separation factor depended on the method of gas permeation. The separation factors of n-butane to i-butane were ca. 10 in the PG method and 30-60 in the CG method.

KW - Butane isomers

KW - Concentration gradient

KW - Pressure gradient

KW - Zeolitic membranes

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JF - Catalysis Today

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ER -

Permeation characteristics of butane isomers through MFI-type zeolitic membranes

Abstract

Keywords

ASJC Scopus subject areas

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