Process for synthesizing metal borohydrides
OwnerYu Zhouinventor
Life of this patent
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Abstract
A process for synthesizing metal borohydride especially sodium borohydride directly from borax by the use of proton H at room temperature and pressure. Said process comprising the steps of: Providing proton H by the use of metals or alloys that can form hydrides with hydrogen. In this case, the metals or alloys are the carriers of proton H Proton H also can be provided from hydrogen gas by the use of catalysts located on the surface of carriers. Making the proton H enters the lattice of boron oxides Removing the oxygen from the lattice of boron oxides by the use of the carriers.
Claims14
A process for synthesizing metal borohydride alkali solutions which comprises:
- synthesizing a carrier powder for proton H;
- bonding hydrogen to said carrier powder;
- producing metal borohydride powder from said carrier powder;
- treating said metal borohydride powder with an alkali solution to produce a metal borohydride alkali solution.
A process for synthesizing substantially pure metal borohydrides which comprises:
- synthesizing a carrier powder for proton H;
- bonding hydrogen to said carrier powder;
- producing a metal borohydride powder from said carrier powder;
- dissolving said metal borohydride powder with a solvent;
- filtering precipitates;
- and
- evaporating said solvent to leave substantially pure metal borohydride.
A process of synthesizing metal borohydrides which comprises:
- forming a mixture including a a metal that is capable of forming hydrides with hydrogen and a hydrogen storage alloy;
- mechanically pulverizing said mixture;
- mechanically mixing the resulting pulverized mixture with an alkali compound;
- subjecting the resulting mixture to water vapor at less than one atmosphere to produce a proton H carrier powder;
- subjecting said proton H carrier powder to hydrogen gas at a temperature from ambient to 400° C. so that hydrogen is carried by said carrier powder;
- mixing a quantity of said carrier powder with metal boron oxide or borax and pulverizing the resulting mixture under hydrogen gas so that a metal borohydride powder is produced;
- adding said metal borohydride powder to an alkali solution;
- and
- filtering out precipitates, leaving a metal borohydride alkali solution.
A process of synthesizing substantially pure metal borohydride which comprises:
- forming a mixture including a a metal that is capable of forming hydrides with hydrogen and a hydrogen storage alloy;
- mechanically pulverizing said mixture;
- mechanically mixing the resulting pulverized mixture with an alkali compound;
- subjecting the resulting mixture to water vapor at less than one atmosphere to produce a proton H carrier powder;
- subjecting said proton H carrier powder to hydrogen gas at a temperature from ambient to 400° C. so that hydrogen is carried by said carrier powder;
- mixing a quantity of said carrier powder with boron oxide or borax and pulverizing the resulting mixture under hydrogen gas so that a metal borohydride powder is produced;
- dissolving said metal borohydride powder into a liquid that can dissolve metal borohydrides;
- filtering the resulting solution;
- and
- evaporating said liquid to obtain substantially pure metal borohydride.
Dependencies are inferred from the claim text.