Sodium borohydride production method
US-2022274832-A1 · Sep 1, 2022 · US
Sodium borohydride production method
US12319583B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12319583-B2 |
| Application number | US-202017632082-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 5, 2020 |
| Priority date | Aug 6, 2019 |
| Publication date | Jun 3, 2025 |
| Grant date | Jun 3, 2025 |
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Abstract
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A sodium borate, aluminum powder and fluoride powder are mixed together in a hermetic vessel filled with hydrogen gas, and the mixture is reacted at not less than 410° C. and not more than 560° C. to produce sodium borohydride.
First claim
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The invention claimed is: 1. A sodium borohydride production method comprising: mixing a sodium borate, aluminum powder and powder of a fluoride together in a hermetic vessel filled with hydrogen gas, and reacting the mixture at not less than 410° C. and not more than 560° C. 2. The sodium borohydride production method according to claim 1 , wherein the sodium borate is one or more selected from sodium metaborate, sodium tetraborate and sodium diborate. 3. The sodium borohydride production method according to claim 1 , wherein the fluoride is one or more selected from sodium fluoride (NaF), sodium hexafluoroaluminate (Na 3 AlF 6 ), potassium fluoride (KF), potassium aluminum fluoride (KAlF 4 ), aluminum fluoride (AlF 3 ) and lithium fluoride (LiF). 4. The sodium borohydride production method according to claim 1 , wherein a molar ratio of aluminum in the aluminum powder to boron in the sodium borate is not less than 4/3. 5. The sodium borohydride production method according to claim 1 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4. 6. The sodium borohydride production method according to claim 2 , wherein the fluoride is one or more selected from sodium fluoride (NaF), sodium hexafluoroaluminate (Na 3 AlF 6 ), potassium fluoride (KF), potassium aluminum fluoride (KAlF 4 ), aluminum fluoride (AlF 3 ) and lithium fluoride (LiF). 7. The sodium borohydride production method according to claim 2 , wherein a molar ratio of aluminum in the aluminum powder to boron in the sodium borate is not less than 4/3. 8. The sodium borohydride production method according to claim 3 , wherein a molar ratio of aluminum in the aluminum powder to boron in the sodium borate is not less than 4/3. 9. The sodium borohydride production method according to claim 6 , wherein a molar ratio of aluminum in the aluminum powder to boron in the sodium borate is not less than 4/3. 10. The sodium borohydride production method according to claim 2 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4. 11. The sodium borohydride production method according to claim 3 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4. 12. The sodium borohydride production method according to claim 4 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4. 13. The sodium borohydride production method according to claim 6 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4. 14. The sodium borohydride production method according to claim 7 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4. 15. The sodium borohydride production method according to claim 8 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4. 16. The sodium borohydride production method according to claim 9 , wherein a molar ratio of any alkali metal plus sodium in the sodium borate to boron in the sodium borate is in a range of more than 1 and not more than 4.
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Classifications
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen (production of water-gas or synthesis gas from solid carbonaceous material C10J) · CPC title
Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title
- C01B6/21Primary
Preparation of borohydrides of alkali metals, alkaline earth metals, magnesium or beryllium; Addition complexes thereof, e.g. LiBH4.2N2H4, NaB2H7 · CPC title
- C01B6/17Primary
Preparation from boron or inorganic compounds containing boron and oxygen · CPC title
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Frequently asked questions
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- What does patent US12319583B2 cover?
- A sodium borate, aluminum powder and fluoride powder are mixed together in a hermetic vessel filled with hydrogen gas, and the mixture is reacted at not less than 410° C. and not more than 560° C. to produce sodium borohydride.
- Who is the assignee on this patent?
- Nippon Light Metal Co
- What technology area does this patent fall under?
- Primary CPC classification C01B6/21. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 03 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).