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Process for production of a borohydride compound

United States Patent

August 19, 2014
View the Complete Patent at the US Patent & Trademark Office
A process for production of a borohydride compound M(BH.sub.4).sub.y. The process has three steps. The first step combines a compound of formula (R.sup.1O).sub.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(AlH.sub.3OR.sup.1).sub.y, wherein R.sup.1 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(AlH.sub.3OR.sup.1).sub.y with a borate, boroxine or borazine compound to produce M(BH.sub.4).sub.y and a byproduct mixture containing alkali metal and aluminum aryloxides. The third step separates M(BH.sub.4).sub.y from the byproduct mixture.
Allen; Nathan Tait (Philadelphia, PA), Butterick, III; Robert (Swedesboro, NJ), Chin; Arthur Achhing (Cherry Hill, NJ), Millar; Dean Michael (Midland, MI), Molzahn; David Craig (Midland, MI)
Rohm and Haas Company (Philadelphia, PA), Dow Global Technologies LLC (Midland, MI)
13/ 053,355
March 22, 2011
This invention was made with Government support under Contract No. DE-FC36-05GO15053 awarded by the Department of Energy. The Government has certain rights in this invention.