Synthesis of AlH by hydrogenation of the metal at high pressure and temerature

高温高圧下での金属の水素化によるAlH合成

齋藤 寛之; 町田 晃彦; 片山 芳則; 青木 勝敏

Saito, Hiroyuki; Machida, Akihiko; Katayama, Yoshinori; Aoki, Katsutoshi

AlH is a metal hydride with the largest hydrogen content (10.1 mass%) and therefore a promissing candidate for hydrogen strage material. AlH has been synthesized by desolvation reaction after the chemical reaction between LiAlH and AlCl in ether. Highly pure AlH has not been obtained by such chemical reactions producing undesired by products. Direct synthesis from the elments has rarely been attempted. The oxide layer fully prevent hydrogenation and hence bulk alminum perfectly free from oxidation is required for the reaction. We attempted to synthesize AlH by hydrogenation of Al metal at high pressures and temperatures.