Process for the preparation of lithium borohydride

Details Process for the preparation of lithium borohydride Process for the preparation of lithium borohydride

2007-10-30

2007-10-30

Langel, Wayne A. (Department: 1754)

Chemistry of inorganic compounds

Boron or compound thereof

Hydrogen and metal or ammonium containing

Reexamination Certificate

active

10760707

ABSTRACT:
A process for the preparation of lithium borohydride by reaction of lithium hydride with boron trifluoride is described, in which lithium hydride is reacted with boron trifluoride in a molar ratio LiH:BF3of >4.1:1, the reaction being carried out in an ethereal solvent whose boiling point at normal pressure is at least 50° C., and at temperatures of at least 10° C.

REFERENCES:
patent: 2532217 (1950-11-01), Winternitz
patent: 2880058 (1959-03-01), Bronaugh
patent: 2934401 (1960-04-01), Hansley et al.
patent: 2975027 (1961-03-01), Wittig et al.
patent: 3215491 (1965-11-01), Schubert et al.
patent: 711174 (1954-06-01), None
patent: 787771 (1957-12-01), None
J. R. Elliott et al., J. Am. Chem. Soc. 74 (1952), 5047-5052.

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