Hydrogen permeation through porous stainless steel for palladium-based composite porous membranes

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@article{4e0a63ef98f643739b91b3ff70c4a3fb,
title = "Hydrogen permeation through porous stainless steel for palladium-based composite porous membranes",
abstract = "Surface topography and hydrogen permeation properties of Porous Stainless Steel (PSS) substrates for thin films deposition of Pd-based hydrogen separation membrane were investigated. Hydrogen permeance through the as received PSS substrates demonstrated a wide range, despite a similar average surface pore size of ~15 μm determined by SEM and confocal laser microscopy analyses. The surface pores of the PSS substrates were modified by impregnation of varying amounts of tungsten (W) powder. Maximum hydrogen flux reduction of 28% suggested that W has a limited effect on the hydrogen permeation through the PSS substrate. Therefore, it appears that hydrogen transport through PSS substrates is mainly controlled by the substrate geometrical factor (ετ), that is the ratio of the porosity to tortuosity. In addition, tungsten was shown to inhibit the iron inter-diffusion between the PSS substrate and the deposited Pd60Cu40 film at temperature as high as 800 °C. Thus, tungsten layer also serves as an effective inter-diffusion barrier. The variation in the permeance between the nominally similar PSS substrates indicates the importance to independently assess the hydrogen transport characteristics of each of the components in a composite membrane.",
keywords = "Composite membrane, Hydrogen separation, Palladium-based membrane, Porous stainless steel, Surface modification",
author = "Shahrouz Nayebossadri and Sean Fletcher and Speight, {John D.} and David Book",
year = "2016",
month = oct,
day = "1",
doi = "10.1016/j.memsci.2016.05.036",
language = "English",
volume = "515",
pages = "22--28",
journal = "Journal of Membrane Science",
issn = "0376-7388",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Hydrogen permeation through porous stainless steel for palladium-based composite porous membranes

AU - Nayebossadri, Shahrouz

AU - Fletcher, Sean

AU - Speight, John D.

AU - Book, David

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Surface topography and hydrogen permeation properties of Porous Stainless Steel (PSS) substrates for thin films deposition of Pd-based hydrogen separation membrane were investigated. Hydrogen permeance through the as received PSS substrates demonstrated a wide range, despite a similar average surface pore size of ~15 μm determined by SEM and confocal laser microscopy analyses. The surface pores of the PSS substrates were modified by impregnation of varying amounts of tungsten (W) powder. Maximum hydrogen flux reduction of 28% suggested that W has a limited effect on the hydrogen permeation through the PSS substrate. Therefore, it appears that hydrogen transport through PSS substrates is mainly controlled by the substrate geometrical factor (ετ), that is the ratio of the porosity to tortuosity. In addition, tungsten was shown to inhibit the iron inter-diffusion between the PSS substrate and the deposited Pd60Cu40 film at temperature as high as 800 °C. Thus, tungsten layer also serves as an effective inter-diffusion barrier. The variation in the permeance between the nominally similar PSS substrates indicates the importance to independently assess the hydrogen transport characteristics of each of the components in a composite membrane.

AB - Surface topography and hydrogen permeation properties of Porous Stainless Steel (PSS) substrates for thin films deposition of Pd-based hydrogen separation membrane were investigated. Hydrogen permeance through the as received PSS substrates demonstrated a wide range, despite a similar average surface pore size of ~15 μm determined by SEM and confocal laser microscopy analyses. The surface pores of the PSS substrates were modified by impregnation of varying amounts of tungsten (W) powder. Maximum hydrogen flux reduction of 28% suggested that W has a limited effect on the hydrogen permeation through the PSS substrate. Therefore, it appears that hydrogen transport through PSS substrates is mainly controlled by the substrate geometrical factor (ετ), that is the ratio of the porosity to tortuosity. In addition, tungsten was shown to inhibit the iron inter-diffusion between the PSS substrate and the deposited Pd60Cu40 film at temperature as high as 800 °C. Thus, tungsten layer also serves as an effective inter-diffusion barrier. The variation in the permeance between the nominally similar PSS substrates indicates the importance to independently assess the hydrogen transport characteristics of each of the components in a composite membrane.

KW - Composite membrane

KW - Hydrogen separation

KW - Palladium-based membrane

KW - Porous stainless steel

KW - Surface modification

UR - http://www.scopus.com/inward/record.url?scp=84973544976&partnerID=8YFLogxK

U2 - 10.1016/j.memsci.2016.05.036

DO - 10.1016/j.memsci.2016.05.036

M3 - Article

AN - SCOPUS:84973544976

VL - 515

SP - 22

EP - 28

JO - Journal of Membrane Science

JF - Journal of Membrane Science

SN - 0376-7388

ER -