Hydrogenation of aluminum using a supercritical fluid medium

Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing

Reexamination Certificate

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C423S645000

Reexamination Certificate

active

07931887

ABSTRACT:
An apparatus and a method for controllably converting aluminum into alane. In the system of the invention, a reaction between aluminum and hydrogen to form alane is performed at temperatures below 100° C. using a supercritical fluid such as CO2as a reaction medium, with the optional inclusion of a co-solvent, such as an ether, in the reaction vessel. Inert gas is used to exclude unwanted gases such as oxygen. The reaction of aluminum and hydrogen has been observed to proceed at approximately 60° C. using Me2O as an added solvent in CO2at supercritical pressures.

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International Search Report and Written Opinion, Mar. 18, 2009, 11 pages.
Jenson et al. “Investigation of the Direct Hydrogenation of Aluminum to Alane in Supercritical Fluids”. In 2007 APS March Meeting, Mar. 6, 2007, Denver, Colorado, USA. Accessed on Mar. 4, 2009 <URL:http://flux.aps.org/meetings/YR07/MAR07/all—MAR07.pdf>.
McGrady et al. Towards the Direct Synthesis of Alane: Hydrogenations Studies of Aluminum in Supercritical Fluid Media:. In: International Symposium on Materials Issues in a Hydrogen Economy, Scientific Program and Abstract Book, Nov. 12-15, 2007, Richmond, Virginia, USA, p. W-18. Accessed on Mar. 4, 2009 <URL:http.//www.has.vcu.edu/phy/lshe/AbstractBooks.pdf>.

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