Method for producing perovskite metal oxynitride
US9776866B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jan 9, 2015 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Jan 9, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/77
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The method for producing a perovskite metal oxynitride of the present invention, comprises: a hydrogenation step (A) of forming a perovskite oxyhydride in which an oxide ion (O2−) and a hydride ion (H−) coexist, by reducing a perovskite oxide through a reductive oxygen elimination reaction using a metal hydride; and a nitriding step (B) of forming a perovskite oxynitride containing a nitride ion (N3−) by heat-treating the perovskite oxyhydride in the presence of a nitrogen source substance at a temperature of 300° C. or higher and 600° C. or lower and exchanging the hydride ion (H−) for a nitride ion (N3−).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.