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US 6,670,444 B2Granted
Processes for synthesizing borohydride compounds
AssigneeMillennium Cell, Inc.
InventorsSteven C. Amendola, Michael T. Kelly, Jeffrey V. Ortega, Ying Wu
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AssigneeMillennium Cell, Inc.
InventorsSteven C. Amendola, Michael T. Kelly, Jeffrey V. Ortega, Ying Wu
Estimating the term…
The present invention relates to processes for producing borohydride compounds. In particular, the present invention provides efficient processes and compositions for the large-scale production of borohydride compounds of the formula YBH4 by the reaction of a boron-containing compound represented by the formula BX3 with hydrogen or an aldehyde to obtain diborane and HX, and reacting the diborane with a Y-containing base selected from those represented by the formula Y2O, YOH and Y2CO3 to obtain YBH4 and YBO2. Y is selected from the group consisting of the alkali metals, pseudo-alkali metals, alkaline earth metals, an ammonium ion, and quaternary amines of the formula NR4+, wherein each R is independently selected from hydrogen and a straight- or branched-chain C1-4 alkyl group, and X is selected from the group consisting of halide ions, —OH, —R′ and —OR′ groups, chalcogens, and chalcogenides, wherein R′ is a straight- or branched-chain C1-4 alkyl group.
A process for producing borohydride compounds represented by the formula YBH4, comprising:
A process for producing borohydride compounds represented by the formula YBH4, comprising reacting gaseous diborane in the absence of solvent with a Y-containing base selected from those represented by the formula Y2O, YOH and Y2CO3 to obtain YBH4 and YBO2, wherein Y is selected from the group consisting of the alkali metals, pseudo-alkali metals, alkaline earth metals, an ammonium ion and quaternary amines of the formula NR4+, wherein each R is independently selected from hydrogen and a straight- or branched-chain C1-4 alkyl group.
A process for producing borohydride compounds represented by the formula YBH4, comprising reacting gaseous diborane with a Y-containing base in suspension in a nonaqueous aprotic solvent or a nonaqueous polar solvent, said base being selected from those represented by the formula Y2O, YOH and Y2CO3 to obtain YBH4 and YBO2, wherein Y is selected from the group consisting of the alkali metals, pseudo-alkali metals, alkaline earth metals, an ammonium ion and quaternary amines of the formula NR4+, wherein each R is independently selected from hydrogen and a straight- or branched-chain C1-4 alkyl group.
Dependencies are inferred from the claim text.