Aluminum Hydride


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Aluminum Hydride

 

(AIH3)X, a compound of aluminum and hydrogen, a white noncrystalline substance that decomposes at temperatures greater than 105°C, with the separation of hydrogen. First obtained in 1942 through the process of glow discharge in a solution of trimethylaluminum and hydrogen, aluminum hydride is capable of forming binary hydrides with the composition MeHn.nAlH3 (where Me is a metal) called alumohydrides, or alanates. These are white, solid substances, soluble in ether, that dissociate in water with the separation of hydrogen. Alumohydrides are widely used in organic chemistry as hydrogenizing agents. Lithium alumohydride—LiAlH4—is a fast-acting, strong, and selective reducing agent. In inorganic synthesis it is used to obtain volatile hydrides of boron, aluminum, silicon, germanium, tin, and other elements.

References in periodicals archive ?
One of the most promising materials, sodium aluminum hydride (NaAl[H.
Washington, July 7 (ANI): Researchers at the US Department of Energy's Savannah River National Laboratory (SNRL) have created a reversible route to generate aluminum hydride, a high capacity hydrogen storage material.
Just 3 mm x 3 mm x 1 mm, the fuel cell generates hydrogen by pushing water vapor through a lithium aluminum hydride membrane.
In fact, using isobutyl aluminum hydride, we have succeeded in the rapid, highly selective, low environmental load production of various kinds of aldehydes as intermediate materials for curative medicines from various kinds of esters.
According to FSEC, Slattery, a graduate of the Florida Institute of Technology and the first woman to win the FSEC award, has pursued hydrogen storage innovations using magnesium hydride, lanthanum magnesium hydride and lithium aluminum hydride.
Ingredients may include ephedrine, sodium hydroxide, red phosphorus, sulfuric acid, lithium, aluminum hydride, chloroform, alcohols, ethers, mercuric chloride, and hydrochloric acid.
This bicyclic amide-imine has been reduced with lithium aluminum hydride to 1,7-diazabicyclo[4.
Using this microreactor, the Research Institute has succeeded in producing aldehydes from esters and isobutyl aluminum hydride in a rapid, highly-selective and less environmentally demanding manner.
These highly reactive, yet air-stable reagents used for reduction and amination, offer an attractive and safer alternative to the widely used Lithium Aluminum Hydride (LiAlH4).
General Motors Corporation (GM) and Sandia National Laboratories recently announced the launch of a four-year, $10-million program to codevelop and test tanks that store hydrogen in sodium aluminum hydride, with the goal of developing "a pre-prototype, solid-state hydrogen storage tank that would store more hydrogen onboard than other hydrogen storage methods currently in use.
GM and Sandia have embarked on a 4-year, $10 million program to develop and test tanks that store hydrogen in sodium aluminum hydride -- or sodium alanate for short.
Until now, however, only complex aluminum hydrides -- unsuitable for use as a hydrogen storage system -- have been created.