Experimental and theoretical investigation on hydrogen permeation with flat sheet Pd/Ag membrane for hydrogen mixture with various inlet H<inf>2</inf> mole fractions and species

Hasan Mohd Faizal, Yuki Kawasaki, Takeshi Yokomori, Toshihisa Ueda

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3 Citations (Scopus)

Abstract

The estimation of hydrogen permeation mole flux was performed by previously introduced theoretical equation which considers the decrease in H<inf>2</inf> concentration at the membrane surface, and was compared with experimental result, for various hydrogen mixtures with different inlet H<inf>2</inf> mole fractions and species. A flat sheet 77 wt.% Pd/23 wt.% Ag purification membrane with effective surface area of 3.14 × 10<sup>-4</sup> m<sup>2</sup> was used. For H<inf>2</inf>:N<inf>2</inf> mixture, the comparison was performed under various feed flow rates (2.78 × 10<sup>-5</sup>-2.50 × 10<sup>-4</sup> mol/s), for inlet H<inf>2</inf> mole fraction of 0.70-0.80, at reference membrane temperature of 623 K and total upstream pressure of 0.25 MPa. Then, nitrogen was subsequently replaced with argon (Ar), helium (He) and carbon dioxide (CO<inf>2</inf>) to investigate the applicability of the estimation method for various H<inf>2</inf> mixtures with different species. The results demonstrate that the effect of H<inf>2</inf> permeation itself plays a significant role for permeation with H<inf>2</inf> mixture, which induces the phenomenon of concentration polarization. Overall, the introduced method is able to estimate H<inf>2</inf> permeation mole flux for H<inf>2</inf> mixture, both qualitatively and quantitatively, regardless of inlet H<inf>2</inf> mole fraction and species.

Original languageEnglish
Pages (from-to)208-215
Number of pages8
JournalSeparation and Purification Technology
Volume149
DOIs
Publication statusPublished - 2015 Jun 23

Fingerprint

Permeation
Hydrogen
Membranes
Fluxes
Helium
Argon
Carbon Dioxide
Purification
Carbon dioxide
Nitrogen
Flow rate
Polarization
Temperature

Keywords

  • Concentration polarization
  • Hydrogen mixture
  • Hydrogen permeation
  • Membrane
  • Sieverts' equation

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

Cite this

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title = "Experimental and theoretical investigation on hydrogen permeation with flat sheet Pd/Ag membrane for hydrogen mixture with various inlet H2 mole fractions and species",
abstract = "The estimation of hydrogen permeation mole flux was performed by previously introduced theoretical equation which considers the decrease in H2 concentration at the membrane surface, and was compared with experimental result, for various hydrogen mixtures with different inlet H2 mole fractions and species. A flat sheet 77 wt.{\%} Pd/23 wt.{\%} Ag purification membrane with effective surface area of 3.14 × 10-4 m2 was used. For H2:N2 mixture, the comparison was performed under various feed flow rates (2.78 × 10-5-2.50 × 10-4 mol/s), for inlet H2 mole fraction of 0.70-0.80, at reference membrane temperature of 623 K and total upstream pressure of 0.25 MPa. Then, nitrogen was subsequently replaced with argon (Ar), helium (He) and carbon dioxide (CO2) to investigate the applicability of the estimation method for various H2 mixtures with different species. The results demonstrate that the effect of H2 permeation itself plays a significant role for permeation with H2 mixture, which induces the phenomenon of concentration polarization. Overall, the introduced method is able to estimate H2 permeation mole flux for H2 mixture, both qualitatively and quantitatively, regardless of inlet H2 mole fraction and species.",
keywords = "Concentration polarization, Hydrogen mixture, Hydrogen permeation, Membrane, Sieverts' equation",
author = "Faizal, {Hasan Mohd} and Yuki Kawasaki and Takeshi Yokomori and Toshihisa Ueda",
year = "2015",
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doi = "10.1016/j.seppur.2015.05.003",
language = "English",
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TY - JOUR

T1 - Experimental and theoretical investigation on hydrogen permeation with flat sheet Pd/Ag membrane for hydrogen mixture with various inlet H2 mole fractions and species

AU - Faizal, Hasan Mohd

AU - Kawasaki, Yuki

AU - Yokomori, Takeshi

AU - Ueda, Toshihisa

PY - 2015/6/23

Y1 - 2015/6/23

N2 - The estimation of hydrogen permeation mole flux was performed by previously introduced theoretical equation which considers the decrease in H2 concentration at the membrane surface, and was compared with experimental result, for various hydrogen mixtures with different inlet H2 mole fractions and species. A flat sheet 77 wt.% Pd/23 wt.% Ag purification membrane with effective surface area of 3.14 × 10-4 m2 was used. For H2:N2 mixture, the comparison was performed under various feed flow rates (2.78 × 10-5-2.50 × 10-4 mol/s), for inlet H2 mole fraction of 0.70-0.80, at reference membrane temperature of 623 K and total upstream pressure of 0.25 MPa. Then, nitrogen was subsequently replaced with argon (Ar), helium (He) and carbon dioxide (CO2) to investigate the applicability of the estimation method for various H2 mixtures with different species. The results demonstrate that the effect of H2 permeation itself plays a significant role for permeation with H2 mixture, which induces the phenomenon of concentration polarization. Overall, the introduced method is able to estimate H2 permeation mole flux for H2 mixture, both qualitatively and quantitatively, regardless of inlet H2 mole fraction and species.

AB - The estimation of hydrogen permeation mole flux was performed by previously introduced theoretical equation which considers the decrease in H2 concentration at the membrane surface, and was compared with experimental result, for various hydrogen mixtures with different inlet H2 mole fractions and species. A flat sheet 77 wt.% Pd/23 wt.% Ag purification membrane with effective surface area of 3.14 × 10-4 m2 was used. For H2:N2 mixture, the comparison was performed under various feed flow rates (2.78 × 10-5-2.50 × 10-4 mol/s), for inlet H2 mole fraction of 0.70-0.80, at reference membrane temperature of 623 K and total upstream pressure of 0.25 MPa. Then, nitrogen was subsequently replaced with argon (Ar), helium (He) and carbon dioxide (CO2) to investigate the applicability of the estimation method for various H2 mixtures with different species. The results demonstrate that the effect of H2 permeation itself plays a significant role for permeation with H2 mixture, which induces the phenomenon of concentration polarization. Overall, the introduced method is able to estimate H2 permeation mole flux for H2 mixture, both qualitatively and quantitatively, regardless of inlet H2 mole fraction and species.

KW - Concentration polarization

KW - Hydrogen mixture

KW - Hydrogen permeation

KW - Membrane

KW - Sieverts' equation

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