# Ammonia Decomposition Catalyzed by Co Nanoparticles Encapsulated in Rare Earth Oxide

https://mdr.nims.go.jp/datasets/3eb7f2a8-a15a-4978-ba8a-4d5511e02e57

## File

- [CoLa2O3_JPCL2025.pdf](https://mdr.nims.go.jp/filesets/3480c021-59c7-4c6d-a7b3-304b5ff78218/download) ([Detail](https://mdr.nims.go.jp/filesets/3480c021-59c7-4c6d-a7b3-304b5ff78218.md))

## Id

3eb7f2a8-a15a-4978-ba8a-4d5511e02e57

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-19T08:02:51.305811Z

## Updated at

2025-03-26T08:26:47.686941Z

## Published at

2025-03-26T08:26:48.194593Z

## Doi



## First published url

https://doi.org/10.1021/acs.jpclett.4c03309

## Date published

2025-01-23

## Recorded date published

2025-1-23

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Ammonia Decomposition Catalyzed by Co Nanoparticles Encapsulated in Rare
    Earth Oxide
  title_type: original
  lang: en

## Description

- description: We fabricated Co-based catalysts by the low temperature thermal decomposition
    of R–Co intermetallics (R = Y, La, or Ce) to reduce the temperature of ammonia
    cracking for hydrogen production.  The catalysts synthesized are nanocomposites
    of ROx/Co with the inverse structure.  In the LaO1.5/Co catalyst derived from
    LaCo13,  Co nanoparticles of 10–30 nm size are enclosed by the LaO1.5 matrix.
    The nanocomposite exhibited superior catalytic activity (91% at 500 ℃), which
    was attributed to dual advantages derived from its inverse structure; the low
    workfunction of O-deficient LaO1.5-x nanoparticles promotes electron donation
    to the Co catalyst in the interface, which leads to enhanced N–H bond dissociation.
    Moreover, such an inverse structure is effective in suppressing the grain growth
    of Co nanoparticles because the LaO1.5 layer works as a diffusion barrier against
    Co.  The thermal decomposition of intermetallics is a new route for the facile
    synthesis of inverse catalysts.
  description_type: abstract
  lang: und

## Creator

- name: Hiroshi Mizoguchi
  role: author
  orcid: https://orcid.org/0000-0002-0992-7449
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Shunqin Luo
  role: author
  orcid: https://orcid.org/0000-0002-1162-0200
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Masato Sasase
  role: author
- name: Masaaki Kitano
  role: author
- name: Hideo Hosono
  role: author
  orcid: https://orcid.org/0000-0001-9260-6728
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: catalysts
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: The Journal of Physical Chemistry Letters
  issn: '19487185'
  volume: '16'
  issue: '3'
  start_page: 796
  end_page: 801

## Conference



## Related item



## Funding

- identifier: JPMXP1224NM5138
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: 23K23440
  funder_name: Japan Society for the Promotion of Science
- funder_name: Fujikura Foundation

## 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



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## Fileset

- id: 3480c021-59c7-4c6d-a7b3-304b5ff78218
  filename: CoLa2O3_JPCL2025.pdf
  content_type: application/pdf
  size: 3023419
  md5: d4efdf9e5667209cd82a841bd389a42f

## Thumbnail

fileset_id: 3480c021-59c7-4c6d-a7b3-304b5ff78218
filename: CoLa2O3_JPCL2025.pdf