# Effect of variation in hydrogen content on catalytic properties of Zr7Ni10 hydrogen storage alloy

https://mdr.nims.go.jp/datasets/f29c9fbe-fe97-44e0-88df-0de9a790fd8b

## File

- [Next Materials-2025-Mizutome.pdf](https://mdr.nims.go.jp/filesets/942d7418-e9c9-41de-83ed-c4fd54398a30/download) ([Detail](https://mdr.nims.go.jp/filesets/942d7418-e9c9-41de-83ed-c4fd54398a30.md))

## Id

f29c9fbe-fe97-44e0-88df-0de9a790fd8b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-10-15T00:22:22.576625Z

## Updated at

2025-10-21T07:06:32.483745Z

## Published at

2025-10-21T06:43:37.142423Z

## Doi



## First published url

https://doi.org/10.1016/j.nxmate.2025.101313

## Date published

2025-10-10

## Recorded date published

2025-10

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Effect of variation in hydrogen content on catalytic properties of Zr7Ni10
    hydrogen storage alloy
  title_type: original
  lang: en

## Description

- description: Hydrogen storage alloys are expected to be catalyst materials for the
    hydrogenation of hydrocarbons and carbon dioxide. The role of hydrogen absorbed
    in the hydrogen storage alloy catalysts has been investigated from the perspectives
    of the hydrogen supplying itself as a reactive species and changing the chemical
    state of the alloy catalysts. However, few studies have considered the catalysts’
    hydrogen storage properties under the reaction fields. To investigate the relationship
    between the hydrogen storage properties and the catalytic properties, we focus
    on Zr7Ni10 alloy, which exhibits a unique phase-transition process involving two
    hydride phases (β phase and γ phase) and a broad solid-solution region of the
    hydrogen solid-solution phase (α phase). The catalytic properties of Zr7Ni10 were
    examined for the hydrogenation of acetylene under conditions where the phase transitions
    occurred and the hydrogen content of the α phase varied. The results showed that
    the α phase exhibited higher rates of acetylene conversion than the degassed alloy.
    Below 230 ◦C, where the phase transitions occurred, Zr7Ni10 showed higher catalytic
    activity with increasing temperature but the difference among the phases could
    not be observed. However, above 230 ◦C, where the hydrogen content of the α phase
    decreased with increasing temperature, the catalytic activity also decreased.
    During the subsequent cooling process, where the hydrogen content of the α phase
    increased, the catalytic activity recovered. Considering a board solid-solution
    region of the α phase, we concluded that the variation in hydrogen content of
    the α phase induced the reversible catalytic activity behavior.
  description_type: abstract
  lang: und

## Creator

- name: Shu Mizutome
  role: author
- name: Nodoka Sasaki
  role: author
- name: Kohta Asano
  role: author
- name: Kouji Sakaki
  role: author
- name: Ya Xu
  role: author
  orcid: https://orcid.org/0000-0001-9067-5244
  organization: National Institute for Materials Science
- name: Satoshi Kameoka
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Hydrogen storage alloy catalyst
  schema: not_defined
- subject: Zr7Ni10
  schema: not_defined
- subject: Hydrogenation of acetylene
  schema: not_defined
- subject: Hydrogen content
  schema: not_defined
- subject: Absorbed hydrogen
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Next Materials
  issn: '29498228'
  volume: '9'
  article_number: '101313'

## Conference



## Related item



## Funding

- identifier: JPMJCR22O3
  funder_name: Japan Science and Technology Agency
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMJCR22O3
  funder_name: Japan Science and Technology Corporation

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 942d7418-e9c9-41de-83ed-c4fd54398a30
  filename: Next Materials-2025-Mizutome.pdf
  content_type: application/pdf
  size: 4266155
  md5: '088a4079401c7c3016b72c5c27340a60'

## Thumbnail

fileset_id: 942d7418-e9c9-41de-83ed-c4fd54398a30
filename: Next Materials-2025-Mizutome.pdf