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GB1271762A
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Bayer AG
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Bayer AG
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C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
C01B6/00—Hydrides of metals including fully or partially hydrided metals, alloys or intermetallic compounds ; Compounds containing at least one metal-hydrogen bond, e.g. (GeH3)2S, SiH GeH; Monoborane or diborane; Addition complexes thereof
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Abstract
An alkali metal borohydride is produced by reaction between boron trioxide and an alkali metal hydride or a mixture of an alkali metal and hydrogen under anhydrous conditions in the presence of an alkaline earth metal halide or silicon dioxide at above 100 DEG C. at a super-atmospheric hydrogen pressure; alternatively, a boron silicate glass prepared by fusing boron trioxide or other boron oxide with silicon dioxide may be used as starting material. The process is performed in an autoclave at between 350 DEG and 450 DEG C. and under a hydrogen pressure of 4-100 atmospheres. The examples specify sodium as the alkali metal. The sodium borohydride formed is extracted with liquid ammonia.
GB1271762A1961-04-081962-04-03Process for the production of alkali metal borohydrides
ExpiredGB961467A
(en)
Process for the preparation of borohydrides of alkali metals, in particular sodium, and alkaline earth metals by reacting these metals or hydrides of these metals with an element containing boron in the presence of hydrogen in gaseous form
Process for the preparation of borohydrides of alkali metals, in particular sodium, and of alkaline earth metals by reacting these metals or hydrides of these metals with an element containing boron in the presence of hydrogen in gaseous form.