Method for the production of α-alane

Organic compounds -- part of the class 532-570 series – Organic compounds – Aluminum containing

Reexamination Certificate

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C423S265000, C423S274000, C423S645000, C044S354000, C044S500000

Reexamination Certificate

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06984746

ABSTRACT:
A method of forming α-alane. The method includes reacting aluminum trichloride and an alkali metal hydride to form an alane-ether complex solution. An aqueous ether solution is optionally added to the alane-ether complex solution to form a partially hydrolyzed ether/alane-ether complex solution. A solution of a crystallization additive is added to the alane-ether complex solution or to the aqueous ether/alane-ether complex solution to form a crystallization solution. The crystallization additive is selected from the group consisting of squalene, cyclododecatriene, norbornylene, norbornadiene, a phenyl terminated polybutadiene, 2,4-dimethyl anisole, 3,5-dimethyl anisole, 2,6-dimethyl anisole, polydimethyl siloxane, and mixtures thereof. Ether is removed from the crystallization solution to crystallize the α-alane.

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Brower et al., Preparation and Properties of Aluminium Hydride, Journal of the American Chemical Society, Apr. 28, 1976, pps 2450-2453, 98:9, Midland Michigan.
Konovalov et al., High Pressures in the Chemistry of Beryllium and Aluminium Hydrides, Russian Journal of Inorganic Chemistry vol. 37 (12) 1992, pps 1361-1356, Lomonosov Moscow State University.
PCT International Search Report dated Mar. 14, 2005.

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