Improvement in high temperature stability of Pd coating on Nb by Nb2C intermediate layer

Yuji Hatano; Keita Ishiyama; Hirofumi Homma; Kuniaki Watanabe

doi:10.1016/j.ijhydene.2006.06.045

Improvement in high temperature stability of Pd coating on Nb by Nb₂C intermediate layer

Yuji Hatano^*, Keita Ishiyama, Hirofumi Homma, Kuniaki Watanabe

^*Corresponding author for this work

Hydrogen Isotope Research Center, Organization for Promotion of Research

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

22 Scopus citations

Abstract

Niobium subcarbide (Nb₂C) was chosen as a material for non-porous intermediate layer to improve the high temperature durability of Pd-Nb composite membranes for hydrogen separation. A layer of Nb₂C was prepared between Nb substrate and thin Pd films (100 nm), and the stability of Pd coating at elevated temperatures (573-773 K) was examined by hydrogen absorption experiments. Hydrogen permeability through the Nb₂C layer appeared to be sufficiently high, and no noticeable deterioration was observed in hydrogen absorption rate under as-prepared conditions. The degradation in coating effect of Pd at elevated temperatures was substantially mitigated by Nb₂C layer. Such improved durability was ascribed to retardation of open porosity development by Nb₂C caused as a consequence of impeded interdiffusion between Pd and Nb.

Original language	English
Pages (from-to)	615-619
Number of pages	5
Journal	International Journal of Hydrogen Energy
Volume	32
Issue number	5
DOIs	https://doi.org/10.1016/j.ijhydene.2006.06.045
State	Published - 2007/04

Keywords

Durability
Hydrogen
Membrane
Niobium
Palladium
Purification
Separation

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2006.06.045

Cite this

@article{659df019842a461bb46b34270740c0c9,

title = "Improvement in high temperature stability of Pd coating on Nb by Nb2C intermediate layer",

abstract = "Niobium subcarbide (Nb2C) was chosen as a material for non-porous intermediate layer to improve the high temperature durability of Pd-Nb composite membranes for hydrogen separation. A layer of Nb2C was prepared between Nb substrate and thin Pd films (100 nm), and the stability of Pd coating at elevated temperatures (573-773 K) was examined by hydrogen absorption experiments. Hydrogen permeability through the Nb2C layer appeared to be sufficiently high, and no noticeable deterioration was observed in hydrogen absorption rate under as-prepared conditions. The degradation in coating effect of Pd at elevated temperatures was substantially mitigated by Nb2C layer. Such improved durability was ascribed to retardation of open porosity development by Nb2C caused as a consequence of impeded interdiffusion between Pd and Nb.",

keywords = "Durability, Hydrogen, Membrane, Niobium, Palladium, Purification, Separation",

author = "Yuji Hatano and Keita Ishiyama and Hirofumi Homma and Kuniaki Watanabe",

note = "Funding Information: This study was supported in part by a Grant-in-Aid for Scientists Research (C) of Ministry of Education, Culture, Sports, Science and Technology of Japan, No. 17560613. The authors express their sincere thanks to Professor A. Livshits and Dr. A. Busnyuk of Bonch-Bruyevich University for fruitful discussion, and to Professor K. Ikeno of University of Toyama for the use of SEM.",

year = "2007",

month = apr,

doi = "10.1016/j.ijhydene.2006.06.045",

language = "英語",

volume = "32",

pages = "615--619",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd.",

number = "5",

}

TY - JOUR

T1 - Improvement in high temperature stability of Pd coating on Nb by Nb2C intermediate layer

AU - Hatano, Yuji

AU - Ishiyama, Keita

AU - Homma, Hirofumi

AU - Watanabe, Kuniaki

N1 - Funding Information: This study was supported in part by a Grant-in-Aid for Scientists Research (C) of Ministry of Education, Culture, Sports, Science and Technology of Japan, No. 17560613. The authors express their sincere thanks to Professor A. Livshits and Dr. A. Busnyuk of Bonch-Bruyevich University for fruitful discussion, and to Professor K. Ikeno of University of Toyama for the use of SEM.

PY - 2007/4

Y1 - 2007/4

N2 - Niobium subcarbide (Nb2C) was chosen as a material for non-porous intermediate layer to improve the high temperature durability of Pd-Nb composite membranes for hydrogen separation. A layer of Nb2C was prepared between Nb substrate and thin Pd films (100 nm), and the stability of Pd coating at elevated temperatures (573-773 K) was examined by hydrogen absorption experiments. Hydrogen permeability through the Nb2C layer appeared to be sufficiently high, and no noticeable deterioration was observed in hydrogen absorption rate under as-prepared conditions. The degradation in coating effect of Pd at elevated temperatures was substantially mitigated by Nb2C layer. Such improved durability was ascribed to retardation of open porosity development by Nb2C caused as a consequence of impeded interdiffusion between Pd and Nb.

AB - Niobium subcarbide (Nb2C) was chosen as a material for non-porous intermediate layer to improve the high temperature durability of Pd-Nb composite membranes for hydrogen separation. A layer of Nb2C was prepared between Nb substrate and thin Pd films (100 nm), and the stability of Pd coating at elevated temperatures (573-773 K) was examined by hydrogen absorption experiments. Hydrogen permeability through the Nb2C layer appeared to be sufficiently high, and no noticeable deterioration was observed in hydrogen absorption rate under as-prepared conditions. The degradation in coating effect of Pd at elevated temperatures was substantially mitigated by Nb2C layer. Such improved durability was ascribed to retardation of open porosity development by Nb2C caused as a consequence of impeded interdiffusion between Pd and Nb.

KW - Durability

KW - Hydrogen

KW - Membrane

KW - Niobium

KW - Palladium

KW - Purification

KW - Separation

UR - http://www.scopus.com/inward/record.url?scp=33847288766&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2006.06.045

DO - 10.1016/j.ijhydene.2006.06.045

M3 - 学術論文

AN - SCOPUS:33847288766

SN - 0360-3199

VL - 32

SP - 615

EP - 619

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 5

ER -