Hydrogenation of aluminum-based alloys under high pressure

アルミニウム基合金の高圧下での水素化反応

齋藤 寛之; 遠藤 成輝; 町田 晃彦; 片山 芳則; 青木 勝敏

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

Aluminum-based alloy hydrides have been explored to realize lightweight hydrogen storage materials. Iosob et al. have reported an attempt to substitute Mg for Al in AlH by ball milling a mixture of (1-x)AlH/xMgH to control thermodynamic stability of AlH. Other groups have reported aluminum-alloy hydrides with different crystal structures from AlH. These hydrides have been synthesized near ambient pressure. Novel aluminum-alloy hydrides are expected to be prepared at high pressures and high temperatures in which conditions passivated aluminum can react with hydrogen fluid. In the present study, hydrogenation reactions of aluminum-based alloys were investigated under high pressure.