Preparation of palladium-silver alloy composite membranes for hydrogen permeation

Ting Chia Huang; Ming Chi Wei; Huey Ing Chen

doi:10.1080/00986440213885

Preparation of palladium-silver alloy composite membranes for hydrogen permeation

Ting Chia Huang, Ming Chi Wei, Huey Ing Chen

Department of Chemical Engineering

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

4 Citations (Scopus)

Abstract

Pd-Ag/α-alumina composite membranes were fabricated by electroless plating technique. Permeability measurements were performed with hydrogen and nitrogen at temperatures ranging from 423 to 616K and pressures ranging from 80 to 250 kPa. The results confirmed that the skin layers of prepared membranes were not defect-free. The ideal separation factor of H₂/N₂ through Pd_0.9-Ag_0.1 composite membrane ranged from 30 to 178 under the present experimental conditions. Furthermore, a resistance model was used to account for the simultaneous transport of hydrogen through the defects as well as the bulk Pd-Ag alloy film in Pd_0.9-Ag_0.1 composite membrane. It revealed that the transport mechanism for hydrogen in this membrane was a combination of solution-diffusion and Knudsen diffusion with minimal contribution of viscous flow.

Original language	English
Pages (from-to)	1262-1282
Number of pages	21
Journal	Chemical Engineering Communications
Volume	189
Issue number	9
DOIs	https://doi.org/10.1080/00986440213885
Publication status	Published - 2002

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)

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10.1080/00986440213885

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title = "Preparation of palladium-silver alloy composite membranes for hydrogen permeation",

abstract = "Pd-Ag/α-alumina composite membranes were fabricated by electroless plating technique. Permeability measurements were performed with hydrogen and nitrogen at temperatures ranging from 423 to 616K and pressures ranging from 80 to 250 kPa. The results confirmed that the skin layers of prepared membranes were not defect-free. The ideal separation factor of H2/N2 through Pd0.9-Ag0.1 composite membrane ranged from 30 to 178 under the present experimental conditions. Furthermore, a resistance model was used to account for the simultaneous transport of hydrogen through the defects as well as the bulk Pd-Ag alloy film in Pd0.9-Ag0.1 composite membrane. It revealed that the transport mechanism for hydrogen in this membrane was a combination of solution-diffusion and Knudsen diffusion with minimal contribution of viscous flow.",

author = "Huang, {Ting Chia} and Wei, {Ming Chi} and Chen, {Huey Ing}",

note = "Funding Information: This work was performed under the auspices of the National Science Council of the Republic of China, under contract number NSC85-2214-E006-011, to which the authors wish to express their thanks. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2002",

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journal = "Chemical Engineering Communications",

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TY - JOUR

T1 - Preparation of palladium-silver alloy composite membranes for hydrogen permeation

AU - Huang, Ting Chia

AU - Wei, Ming Chi

AU - Chen, Huey Ing

N1 - Funding Information: This work was performed under the auspices of the National Science Council of the Republic of China, under contract number NSC85-2214-E006-011, to which the authors wish to express their thanks. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2002

Y1 - 2002

N2 - Pd-Ag/α-alumina composite membranes were fabricated by electroless plating technique. Permeability measurements were performed with hydrogen and nitrogen at temperatures ranging from 423 to 616K and pressures ranging from 80 to 250 kPa. The results confirmed that the skin layers of prepared membranes were not defect-free. The ideal separation factor of H2/N2 through Pd0.9-Ag0.1 composite membrane ranged from 30 to 178 under the present experimental conditions. Furthermore, a resistance model was used to account for the simultaneous transport of hydrogen through the defects as well as the bulk Pd-Ag alloy film in Pd0.9-Ag0.1 composite membrane. It revealed that the transport mechanism for hydrogen in this membrane was a combination of solution-diffusion and Knudsen diffusion with minimal contribution of viscous flow.

AB - Pd-Ag/α-alumina composite membranes were fabricated by electroless plating technique. Permeability measurements were performed with hydrogen and nitrogen at temperatures ranging from 423 to 616K and pressures ranging from 80 to 250 kPa. The results confirmed that the skin layers of prepared membranes were not defect-free. The ideal separation factor of H2/N2 through Pd0.9-Ag0.1 composite membrane ranged from 30 to 178 under the present experimental conditions. Furthermore, a resistance model was used to account for the simultaneous transport of hydrogen through the defects as well as the bulk Pd-Ag alloy film in Pd0.9-Ag0.1 composite membrane. It revealed that the transport mechanism for hydrogen in this membrane was a combination of solution-diffusion and Knudsen diffusion with minimal contribution of viscous flow.

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Preparation of palladium-silver alloy composite membranes for hydrogen permeation

Abstract

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