Process for production of a borohydride compound
US8808662B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 22, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | May 23, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B6/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for production of a borohydride compound M(BH4)y. The process has three steps. The first step combines a compound of formula (R1O)yM with aluminum, hydrogen and a metallic catalyst containing at least one metal selected from the group consisting of titanium, zirconium, hafnium, niobium, vanadium, tantalum and iron to produce a compound of formula M(AlH3OR1)y, wherein R1 is phenyl or phenyl substituted by at least one alkyl or alkoxy group; M is an alkali metal, Be or Mg; and y is one or two; wherein the catalyst is present at a level of at least 200 ppm based on weight of aluminum. The second step combines the compound of formula M(AlH3OR1)y with a borate, boroxine or borazine compound to produce M(BH4)y and a byproduct mixture containing alkali metal and aluminum aryloxides. The third step separates M(BH4)y from the byproduct mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.