Effect of nickel deposition on hydrogen permeation behavior of mesoporous γ-alumina composite membranes

Chang Yeol Yu; Bong Kuk Sea; Dong Wook Lee; Sang Jun Park; Kwan Young Lee; Kew Ho Lee

doi:10.1016/j.jcis.2007.11.056

Effect of nickel deposition on hydrogen permeation behavior of mesoporous γ-alumina composite membranes

Chang Yeol Yu, Bong Kuk Sea, Dong Wook Lee, Sang Jun Park, Kwan Young Lee, Kew Ho Lee

Department of Chemical and Biological Engineering

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

14 Citations (Scopus)

Abstract

Ni/alumina composite membranes were prepared and investigated for hydrogen separation at high temperature. α-Alumina-supported γ-alumina composite membranes were prepared by soaking-rolling method. In order to improve H₂ selectivity and permeance of the γ-alumina membranes, Ni was deposited by a soaking process. As a result of a single gas permeation test of the Ni/alumina composite membranes, hydrogen permeance and H₂/N₂ selectivity at permeation temperature of 450 °C were 6.29 × 10^-7 mol / m² s Pa and 5.2 which exceeded theoretical Knudsen selectivity. Contribution of surface diffusion was investigated by temperature dependence of H₂ permeance. The surface diffusion was observed at higher temperature above 250 °C. The Ni deposition on surface of the γ-alumina composite membrane led to hydrogen permeation via Knudsen diffusion combined with surface diffusion, which gave high H₂ selectivity exceeding the Knudsen diffusion mechanism.

Original language	English
Pages (from-to)	470-476
Number of pages	7
Journal	Journal of Colloid and Interface Science
Volume	319
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2007.11.056
Publication status	Published - 2008 Mar 15

Keywords

Composite membrane
Hydrogen separation
Nickel
Surface diffusion

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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10.1016/j.jcis.2007.11.056

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title = "Effect of nickel deposition on hydrogen permeation behavior of mesoporous γ-alumina composite membranes",

abstract = "Ni/alumina composite membranes were prepared and investigated for hydrogen separation at high temperature. α-Alumina-supported γ-alumina composite membranes were prepared by soaking-rolling method. In order to improve H2 selectivity and permeance of the γ-alumina membranes, Ni was deposited by a soaking process. As a result of a single gas permeation test of the Ni/alumina composite membranes, hydrogen permeance and H2/N2 selectivity at permeation temperature of 450 °C were 6.29 × 10-7 mol / m2 s Pa and 5.2 which exceeded theoretical Knudsen selectivity. Contribution of surface diffusion was investigated by temperature dependence of H2 permeance. The surface diffusion was observed at higher temperature above 250 °C. The Ni deposition on surface of the γ-alumina composite membrane led to hydrogen permeation via Knudsen diffusion combined with surface diffusion, which gave high H2 selectivity exceeding the Knudsen diffusion mechanism.",

keywords = "Composite membrane, Hydrogen separation, Nickel, Surface diffusion",

author = "Yu, {Chang Yeol} and Sea, {Bong Kuk} and Lee, {Dong Wook} and Park, {Sang Jun} and Lee, {Kwan Young} and Lee, {Kew Ho}",

year = "2008",

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doi = "10.1016/j.jcis.2007.11.056",

language = "English",

volume = "319",

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AU - Yu, Chang Yeol

AU - Sea, Bong Kuk

AU - Lee, Dong Wook

AU - Park, Sang Jun

AU - Lee, Kwan Young

AU - Lee, Kew Ho

PY - 2008/3/15

Y1 - 2008/3/15

N2 - Ni/alumina composite membranes were prepared and investigated for hydrogen separation at high temperature. α-Alumina-supported γ-alumina composite membranes were prepared by soaking-rolling method. In order to improve H2 selectivity and permeance of the γ-alumina membranes, Ni was deposited by a soaking process. As a result of a single gas permeation test of the Ni/alumina composite membranes, hydrogen permeance and H2/N2 selectivity at permeation temperature of 450 °C were 6.29 × 10-7 mol / m2 s Pa and 5.2 which exceeded theoretical Knudsen selectivity. Contribution of surface diffusion was investigated by temperature dependence of H2 permeance. The surface diffusion was observed at higher temperature above 250 °C. The Ni deposition on surface of the γ-alumina composite membrane led to hydrogen permeation via Knudsen diffusion combined with surface diffusion, which gave high H2 selectivity exceeding the Knudsen diffusion mechanism.

AB - Ni/alumina composite membranes were prepared and investigated for hydrogen separation at high temperature. α-Alumina-supported γ-alumina composite membranes were prepared by soaking-rolling method. In order to improve H2 selectivity and permeance of the γ-alumina membranes, Ni was deposited by a soaking process. As a result of a single gas permeation test of the Ni/alumina composite membranes, hydrogen permeance and H2/N2 selectivity at permeation temperature of 450 °C were 6.29 × 10-7 mol / m2 s Pa and 5.2 which exceeded theoretical Knudsen selectivity. Contribution of surface diffusion was investigated by temperature dependence of H2 permeance. The surface diffusion was observed at higher temperature above 250 °C. The Ni deposition on surface of the γ-alumina composite membrane led to hydrogen permeation via Knudsen diffusion combined with surface diffusion, which gave high H2 selectivity exceeding the Knudsen diffusion mechanism.

KW - Composite membrane

KW - Hydrogen separation

KW - Nickel

KW - Surface diffusion

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Effect of nickel deposition on hydrogen permeation behavior of mesoporous γ-alumina composite membranes

Abstract

Keywords

ASJC Scopus subject areas

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