# Stabilisation of solid-state cubic ammonia confined in a glass substance at ambient temperature under atmospheric pressure

https://mdr.nims.go.jp/datasets/63f28037-8fcf-4bcb-a527-f58eaf61761e

## Files

- [240527 Solid-state Ammonia Reprint.pdf](https://mdr.nims.go.jp/filesets/7bb8960c-58aa-4375-bb8f-852a90b47772/download) ([Detail](https://mdr.nims.go.jp/filesets/7bb8960c-58aa-4375-bb8f-852a90b47772.md))

## Id

63f28037-8fcf-4bcb-a527-f58eaf61761e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-04T02:12:10.121408Z

## Updated at

2025-02-04T07:30:21.112208Z

## Published at

2025-02-04T07:30:22.157849Z

## Doi



## First published url

https://doi.org/10.1039/d4ra00229f

## Date published

2024-05-20

## Recorded date published

2024-5-15

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Stabilisation of solid-state cubic ammonia confined in a glass substance
    at ambient temperature under atmospheric pressure
  title_type: original
  lang: en

## Description

- description: 'Ammonia, a widely available compound, exhibits structural transitions
    from solid to liquid to gas depending on temperature, pressure, and chemical interactions
    with adjacent atoms, offering valuable insights into planetary science. It serves
    as a significant hydrogen storage medium in environmental science, mitigating
    carbon dioxide emissions from fossil fuels. However, its gaseous form, NH3(g),
    poses health risks, potentially leading to fatalities. The sublimation pressure
    of solid cubic ammonia, NH3(cr), below 195.5 K is minimal. In this study, we endeavoured
    to stabilise NH3(cr) at room temperature for the first time. Through confinement
    within a boric acid glass matrix, we successfully synthesised and stabilised cubic
    crystal NH3(cr) with a lattice constant of 0.5165 nm under atmospheric pressure.
    Thermodynamic simulations affirmed the stabilisation of NH3(cr), indicating its
    quasi-equilibrium state based on the estimated standard Gibbs energy of formation
    of NH3(cr) at 298.15 K. Despite these advancements, the extraction of H2(g) from
    NH3(cr) within the boric acid glass matrix remains unresolved. The quest for an
    external matrix with catalytic capabilities to decompose inner NH3(cr) into H2(g)
    and N2(g) presents a promising avenue for future research. Achieving stability
    of the low-temperature phase at ambient conditions could significantly propel
    exploration in this field. '
  description_type: abstract
  lang: und

## Creator

- name: Masao Morishita
  role: author
  orcid: https://orcid.org/0000-0002-6330-3901
  organization: National Institute for Materials Science
- name: Hayate Miyoshi
  role: author
- name: Haruto Kawasaki
  role: author
- name: Hidefumi Yanagita
  role: author

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

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## Keyword

- subject: confined in a glass substance
  schema: not_defined
- subject: safety storage and transport of ammonia
  schema: not_defined
- subject: stabilisation at ambient temperature
  schema: not_defined
- subject: hydrogen storage substance
  schema: not_defined
- subject: solid state ammonia
  schema: not_defined

## Rights

- identifier: cc-by-3.0

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: RSC Advances
  issn: '20462069'
  volume: '14'
  issue: '23'
  start_page: 16128
  end_page: 16137

## Conference



## Related item



## Funding

- identifier: 24K08127
  funder_name: Japan Society for the Promotion of Science
- identifier: Academic research grant
  funder_name: Hyogo Science and Technology Association
- identifier: Special research grant for hydrogen energy
  funder_name: University of Hyogo

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## Fileset

- id: 7bb8960c-58aa-4375-bb8f-852a90b47772
  filename: 240527 Solid-state Ammonia Reprint.pdf
  content_type: application/pdf
  size: 836124
  md5: 93efb85e360ef2ca8cc75d197791ed51

## Thumbnail

fileset_id: 7bb8960c-58aa-4375-bb8f-852a90b47772
filename: 240527 Solid-state Ammonia Reprint.pdf