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US 2026/0054983 A1Published application
Sodium borohydride production method
AssigneesNippon Light Metal Company, Ltd., National Institute of Advanced Industrial Science and Technology
InventorsKaoru SUGITA, Yuji OOTA, Yo Rene ABE, Takuma HACHISU, Takehiro MATSUNAGA
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Abstract
In a hermetic vessel filled with hydrogen gas, a sodium borate and aluminum powder are reacted at not less than 400° C. and not more than 560° C. while performing stirring to produce sodium borohydride with the molar ratio of sodium contained in the sodium borate being larger than 0.5 relative to boron contained in the sodium borate.
Claims4
A sodium borohydride production method comprising:
- dehydrating a mixture including an alkali metal hydroxide, a sodium borate and aluminum powder in a static condition at not less than 400° C. in a hydrogen gas atmosphere;
- oxidizing the aluminum powder by reaction with water to form a sodium aluminum oxide layer extending from the surface toward the inside of aluminum particles, the sodium aluminum oxide layer being represented by the chemical formula (I) below;
- and
- reacting the mixture at a temperature of not less than 400° C. and not more than 560° C. while performing stirring,
1 more element
A sodium borohydride production method comprising:
- dehydrating a mixture including an alkali metal hydroxide, a sodium borate and aluminum powder in a static condition in a vessel while heating the vessel at not less than 400° C. under a reduced pressure;
- oxidizing the aluminum powder by reaction with water to form a sodium aluminum oxide layer extending from the surface toward the inside of aluminum particles, the sodium aluminum oxide layer being represented by the chemical formula (I) below;
- and
- reacting the mixture at a temperature of not less than 400° C. and not more than 560° C. in a hydrogen gas atmosphere while performing stirring,
1 more element
Dependencies are inferred from the claim text.