# Ammonia Synthesis over Ruthenium Supported on Metastable Perovskite Oxyhydrides Ba<i>RE</i>O<sub>2</sub>H (<i>RE</i> = Y, Sc) Prepared by Mechanochemical Method

https://mdr.nims.go.jp/datasets/f9bbe5d3-9a0b-498b-a0f5-589a33973e54

## File

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## Id

f9bbe5d3-9a0b-498b-a0f5-589a33973e54

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-18T03:58:26.298031Z

## Updated at

2025-02-23T13:47:36.536423Z

## Published at

2025-02-23T13:47:36.617388Z

## Doi



## First published url

https://doi.org/10.1002/aenm.202402353

## Date published

2024-08-03

## Recorded date published

2024-12

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Ammonia Synthesis over Ruthenium Supported on Metastable Perovskite Oxyhydrides
    Ba<i>RE</i>O<sub>2</sub>H (<i>RE</i> = Y, Sc) Prepared by Mechanochemical Method
  title_type: original
  lang: en

## Description

- description: Oxyhydrides have attracted attention as materials with various unique
    properties derived from lattice hydride ions (H−). However, their instability
    makes synthesis by conventional thermal synthesis methods difficult, so an appropriate
    synthesis strategy is required. Here, the mechanochemical synthesis of perovskite
    oxyhydrides BaREO2H (RE = Y, Sc) for catalyst applications is reported. The formation
    of BaYO2H is known to be thermodynamically unstable; however, a mechanochemical
    process that inevitably proceeds under non-equilibrium conditions enables the
    synthesis of such a metastable oxyhydride material without any heat treatment.
    Furthermore, BaScO2H, which is typically obtained at very high temperatures (1000
    °C) and pressure (>4 GPa), is successfully synthesized at room temperature by
    the mechanochemical method. The ammonia synthesis reaction over these oxyhydrides
    supporting Ru is significantly enhanced at low temperatures, and the ammonia synthesis
    rates are significantly higher than conventional oxide-supported Ru catalysts.
    The mechanochemically synthesized BaREO2H has many anionic electrons with low
    work function at the site of H− vacancies, which enables strong electron donation
    to Ru and the storage of excess hydrogen adatoms from the Ru surface, which results
    in high catalytic performance.
  description_type: abstract
  lang: und

## Creator

- name: Shun Sato
  role: author
  orcid: https://orcid.org/0009-0004-2269-6552
- name: Masayoshi Miyazaki
  role: author
- name: Satoru Matsuishi
  role: author
  orcid: https://orcid.org/0000-0001-8905-0255
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hideo Hosono
  role: author
  orcid: https://orcid.org/0000-0001-9260-6728
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Masaaki Kitano
  role: author
  orcid: https://orcid.org/0000-0003-4466-7387

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: ammonia synthesis
  schema: not_defined
- subject: oxyhydride
  schema: not_defined
- subject: mechanochemical synthesis
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Energy Materials
  issn: '16146832'
  volume: '14'
  issue: '47'
  article_number: '2402353'

## Conference



## Related item



## Funding

- identifier: JPMJSP2106
  funder_name: JST
  description: JST SPRING
- identifier: JP22H00272
  funder_name: JSPS
  description: Kakenhi Grant-in-Aid
- funder_name: Tokyo Tech Fund
  description: Tokyo Tech Advanced Researchers Grant
- identifier: JPMJMI21E9
  funder_name: JST
  description: JST-Mirai Program
- identifier: " JPMJFR203A"
  funder_name: JST
  description: FOREST Program
- identifier: JP24H02204
  funder_name: JSPS
  description: Kakenhi Grant-in-Aid

## 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

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  filename: Sato et al. - 2024 - Ammonia Synthesis over Ruthenium Supported on Meta.pdf
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  size: 2919317
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## Thumbnail

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filename: aenm202402353-sup-0001-suppmat.docx