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Lithium aluminium hydride
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=== Preparation === {{chem2|Li[AlH4]}} was first prepared from the reaction between [[lithium hydride]] (LiH) and [[aluminium chloride]]:<ref name="Schlessinger" /><ref name="africa" /> :{{chem2|4 LiH + AlCl3 β Li[AlH4] + 3 LiCl}} In addition to this method, the industrial synthesis entails the initial preparation of [[sodium aluminium hydride]] from the elements under high pressure and temperature:<ref name="HollemanAF">{{cite book | author = Holleman, A. F., Wiberg, E., Wiberg, N. | title = Lehrbuch der Anorganischen Chemie | edition = 102nd | publisher = de Gruyter | year = 2007 | isbn = 978-3-11-017770-1 | url = https://books.google.com/books?id=mahxPfBdcxcC }}</ref> :{{chem2|Na + Al + 2 H2 β Na[AlH4]}} {{chem2|Li[AlH4]}} is then prepared by a [[salt metathesis reaction]] according to: :{{chem2|Na[AlH4] + LiCl β Li[AlH4] + NaCl}} which proceeds in a high yield. [[Lithium chloride|LiCl]] is removed by [[filtration]] from an [[diethyl ether|ethereal]] solution of LAH, with subsequent precipitation of LAH to yield a product containing around 1 wt% LiCl.<ref name="HollemanAF" /> An alternative preparation starts from LiH, and metallic Al instead of {{chem2|AlCl3}}. Catalyzed by a small quantity of [[Titanium(III) chloride|TiCl<sub>3</sub>]] (0.2%), the reaction proceeds well using [[dimethylether]] as solvent. This method avoids the cogeneration of salt.<ref>{{cite journal |last1=Xiangfeng |first1=Liu |last2=Langmi |first2=Henrietta W. |last3=McGrady |first3=G. Sean |last4=Craig |first4=M. Jensen |last5=Beattie |first5=Shane D. |last6=Azenwi |first6=Felix F. |title=Ti-Doped LiAlH<sub>4</sub> for Hydrogen Storage: Synthesis, Catalyst Loading and Cycling Performance |journal=J. Am. Chem. Soc. |year=2011 |volume=133 |issue=39 |pages=15593β15597|doi=10.1021/ja204976z|pmid=21863886 }}</ref>
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