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 journalArticle

4 Citations (Scopus)

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 languageEnglish (US)
JournalAICHE Journal
DOIs
StateAccepted/In press - Jan 1 2018

Fingerprint

Zeolites
Gas permeability
Permeability
Gases
Membranes
Microstructure
Fibers
Substrates
Permeation
Geometry
Diffusion in gases
Aluminum Oxide
Alumina
Crystalline materials
Growth

Keywords

  • Gas separation
  • Hollow fiber
  • MFI zeolite
  • Microporous membrane
  • Substrate curvature
  • Thermal expansion mismatch

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

Cite this

Effect of substrate curvature on microstructure and gas permeability of hollow fiber MFI zeolite membranes. / Chen, Chien Hua; Meng, Lie; Tung, Kuo Lun; Lin, Jerry.

In: AICHE Journal, 01.01.2018.

Research output: Contribution to journalArticle

@article{69e11770697646439ed939e82329f216,
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 = "Gas separation, Hollow fiber, MFI zeolite, Microporous membrane, Substrate curvature, Thermal expansion mismatch",
author = "Chen, {Chien Hua} and Lie Meng and Tung, {Kuo Lun} and Jerry Lin",
year = "2018",
month = "1",
day = "1",
doi = "10.1002/aic.16197",
language = "English (US)",
journal = "AICHE Journal",
issn = "0001-1541",
publisher = "American Institute of Chemical Engineers",

}

TY - JOUR

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

PY - 2018/1/1

Y1 - 2018/1/1

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 - Gas separation

KW - Hollow fiber

KW - MFI zeolite

KW - Microporous membrane

KW - Substrate curvature

KW - Thermal expansion mismatch

UR - http://www.scopus.com/inward/record.url?scp=85047819454&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047819454&partnerID=8YFLogxK

U2 - 10.1002/aic.16197

DO - 10.1002/aic.16197

M3 - Article

AN - SCOPUS:85047819454

JO - AICHE Journal

JF - AICHE Journal

SN - 0001-1541

ER -