Recovery of metallic material for hydrogen storage

Abstract

Abstract PURPOSE:At first, the metal hydride is subjected to dehydrogenative treatment, then, a liquid scarcely reactive with the metal hydride is introduced into the vessel to cover the surface of the metal hydride and the metal hydride and the liquid are taken out of the vessel together, thus recovering it substantially without reduction in hydrogen storage performance. CONSTITUTION:When a metal hydride 1 such as LaNi5 or TiMn1.5 contained in a stainless steel pressure vessel 2 becomes low in its hydrogen storage performance, only the vacuum valve 6 is opened and the vessel 2 is evacuated to a level of 10<-5>mm.Hg to effect dehydrogenative treatment. Then, a liquid scarcely reactive with the metal halide such as ethanol is introduced through the valve 9 into the vessel 1 to cover to surface of the hydride 1. After that, the cover 3 is demounted and the metal hydride and ethanol are taken out of the vessel 2. The following separation of the ethanol from the hydride by evaporation with heat causes substantially no reduction in hydrogen storage performance.

Inventors

• 👤 Yoshio Moriwaki
• 👤 良夫 森脇
• 👤 Koji Gamo
• 👤 孝治 蒲生
• 👤 Nobuyuki Yanagihara
• 👤 伸行 柳原
• 👤 Tsutomu Iwaki
• 👤 勉 岩城

Bibliographic Details