Effect of substrate curvature on microstructure and gas permeability of hollow fiber MFI zeolite membranes

Chien Hua Chen; Lie Meng; Kuo Lun Tung; Jerry Lin

doi:10.1002/aic.16197

Effect of substrate curvature on microstructure and gas permeability of hollow fiber MFI zeolite membranes

Chien Hua Chen, Lie Meng, Kuo Lun Tung, Jerry Lin

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

26 Scopus citations

Abstract

Literature data show that gas permeability of MFI zeolite membrane varies depending on the geometry of supports. The present work investigates the effects of the surface curvature of substrates on the microstructure and the gas permeation property of supported zeolite membranes. MFI zeolite membranes were grown on porous alumina hollow fibers with different diameters (surface curvature) by the secondary growth method. Single gas permeation and H₂/CO₂ binary gas separation from 25 to 300 °C were conducted to study the membrane quality. The zeolite membranes on supports of larger surface curvature have higher permeability and lower selectivity due to the presence of more inter-crystalline gaps in the zeolite layer formed during the template removal step. The effects of the support surface curvature (and geometry) on zeolite membrane microstructure and gas permeation characteristics are semi-quantitatively analyzed by a transport model considering both structural change and gas diffusion in micropores.

Original language	English (US)
Pages (from-to)	3419-3428
Number of pages	10
Journal	AIChE Journal
Volume	64
Issue number	9
DOIs	https://doi.org/10.1002/aic.16197
State	Published - Sep 2018

Keywords

MFI zeolite
gas separation
hollow fiber
microporous membrane
substrate curvature
thermal expansion mismatch

ASJC Scopus subject areas

Biotechnology
Environmental Engineering
General Chemical Engineering

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10.1002/aic.16197

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title = "Effect of substrate curvature on microstructure and gas permeability of hollow fiber MFI zeolite membranes",

abstract = "Literature data show that gas permeability of MFI zeolite membrane varies depending on the geometry of supports. The present work investigates the effects of the surface curvature of substrates on the microstructure and the gas permeation property of supported zeolite membranes. MFI zeolite membranes were grown on porous alumina hollow fibers with different diameters (surface curvature) by the secondary growth method. Single gas permeation and H2/CO2 binary gas separation from 25 to 300 °C were conducted to study the membrane quality. The zeolite membranes on supports of larger surface curvature have higher permeability and lower selectivity due to the presence of more inter-crystalline gaps in the zeolite layer formed during the template removal step. The effects of the support surface curvature (and geometry) on zeolite membrane microstructure and gas permeation characteristics are semi-quantitatively analyzed by a transport model considering both structural change and gas diffusion in micropores.",

keywords = "MFI zeolite, gas separation, hollow fiber, microporous membrane, substrate curvature, thermal expansion mismatch",

author = "Chen, {Chien Hua} and Lie Meng and Tung, {Kuo Lun} and Jerry Lin",

note = "Funding Information: We acknowledge the support of Department of Energy (DE-FE0026435) on the zeolite membrane research. Chien-Hua Chen would like to thank the Ministry of Science and Technology (MOST), Taiwan, for sponsoring him the Graduate Students Study Abroad Program (Project number 105–2917-I-002–019) to visit Arizona State University. Publisher Copyright: {\textcopyright} 2018 American Institute of Chemical Engineers",

year = "2018",

month = sep,

doi = "10.1002/aic.16197",

language = "English (US)",

volume = "64",

pages = "3419--3428",

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publisher = "American Institute of Chemical Engineers",

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T1 - Effect of substrate curvature on microstructure and gas permeability of hollow fiber MFI zeolite membranes

AU - Chen, Chien Hua

AU - Meng, Lie

AU - Tung, Kuo Lun

AU - Lin, Jerry

N1 - Funding Information: We acknowledge the support of Department of Energy (DE-FE0026435) on the zeolite membrane research. Chien-Hua Chen would like to thank the Ministry of Science and Technology (MOST), Taiwan, for sponsoring him the Graduate Students Study Abroad Program (Project number 105–2917-I-002–019) to visit Arizona State University. Publisher Copyright: © 2018 American Institute of Chemical Engineers

PY - 2018/9

Y1 - 2018/9

N2 - Literature data show that gas permeability of MFI zeolite membrane varies depending on the geometry of supports. The present work investigates the effects of the surface curvature of substrates on the microstructure and the gas permeation property of supported zeolite membranes. MFI zeolite membranes were grown on porous alumina hollow fibers with different diameters (surface curvature) by the secondary growth method. Single gas permeation and H2/CO2 binary gas separation from 25 to 300 °C were conducted to study the membrane quality. The zeolite membranes on supports of larger surface curvature have higher permeability and lower selectivity due to the presence of more inter-crystalline gaps in the zeolite layer formed during the template removal step. The effects of the support surface curvature (and geometry) on zeolite membrane microstructure and gas permeation characteristics are semi-quantitatively analyzed by a transport model considering both structural change and gas diffusion in micropores.

AB - Literature data show that gas permeability of MFI zeolite membrane varies depending on the geometry of supports. The present work investigates the effects of the surface curvature of substrates on the microstructure and the gas permeation property of supported zeolite membranes. MFI zeolite membranes were grown on porous alumina hollow fibers with different diameters (surface curvature) by the secondary growth method. Single gas permeation and H2/CO2 binary gas separation from 25 to 300 °C were conducted to study the membrane quality. The zeolite membranes on supports of larger surface curvature have higher permeability and lower selectivity due to the presence of more inter-crystalline gaps in the zeolite layer formed during the template removal step. The effects of the support surface curvature (and geometry) on zeolite membrane microstructure and gas permeation characteristics are semi-quantitatively analyzed by a transport model considering both structural change and gas diffusion in micropores.

KW - MFI zeolite

KW - gas separation

KW - hollow fiber

KW - microporous membrane

KW - substrate curvature

KW - thermal expansion mismatch

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Effect of substrate curvature on microstructure and gas permeability of hollow fiber MFI zeolite membranes

Abstract

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