Lithium Aluminum Hydride #16853-85-3

Lithium Aluminum Hydride #16853-85-3

Lithium aluminum hydride (LiAlH4) is a promising compound for hydrogen storage, with a high gravimetric and volumetric hydrogen density and a low decomposition temperature. Similar to other metastable hydrides, LiAlH4 does not form by direct hydrogenation at reasonable hydrogen pressures; therefore, there is considerable interest in developing new routes to regenerate the material from the dehydrogenated products LiH and Al. It can also be used as a reducing agent in the preparation of reduced graphene oxide (rGO).

A white powder that turns gray on standing. If spread out over a large flat combustible surface, friction can cause ignition. Used to make other chemicals, as a polymerization catalyst, as a hydrogen source, and as a propellant.

Lithium hydride aluminide is a commonly used reducing agent in organic chemistry, capable of reducing various functional group compounds; it can also act on double and triple bond compounds to achieve the hydrogen-aluminumation reaction; lithium hydride aluminide can also participate in reactions as a base. 

Lithium hydride has a strong hydrogen transfer ability and can reduce aldehydes, ketones, esters, lactones, carboxylic acids, acid anhydrides and epoxides to alcohols, or convert amides, imine ions, nitriles and aliphatic nitro compounds into corresponding amines. Moreover, the extremely strong reducing ability of lithium hydride enables it to act on other functional groups, such as reducing halogenated alkanes to alkanes. In these reactions, the reactivity of the halogenated substances from high to low is iodide, bromide and chloride.

Application of Lithium Aluminum Hydride

Lithium aluminum hydride is among the most important industrial reducingagents. It is used extensively in organic syntheses and also in catalytichydrogenation. Reactant or reagent for:
1. The preparation of thermoplastic polyester polyamides from oleic acid
2. Lithium-polymer batteries
3. Hydrodefluorination of gem-difluoromethylene derivatives
4. Asymmetric aldol reactions
5. Synthesis of Li-Al-N-H composites with hydrogen absorption / desorption properties
6. LAH is a powerful reducing agent for many different reduction reactions such as that of ketones to alcohols

It is used as a powerful reducing agent inorganic synthesis. Except for olefinic doublebonds, almost all organic functional groupsare reduced by lithium aluminum hydride(Sullivan and Wade 1980). It is used extensivelyin pharmaceutical synthesis and in catalytichydrogenation.

Lithium aluminum hydride (LiAlH4) is an effective reducing agent that can be used in chemical synthesis to reduce esters, carboxylic acids, acyl chlorides, aldehydes, epoxides, and ketones into the corresponding alcohols. In addition, amide, nitro, nitrile, imine, oxime, and azide compounds are converted into amines.
LiAlH4 is a promising substance for hydrogen storage applications. Its properties include high gravimetric and volumetric hydrogen densities . It can also be used as a reducing agent in the preparation of reduced graphene oxide (rGO).

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