Abstract
Hydrogen is a promising potential source of environmentally-clean energy. However, the transport, storage, and handling of hydrogen gas have some problems because of its physical properties. Transition metal-catalyzed hydrogen generation has attracted significant attention as a resolution method for these problems and can be classified into three major types, including (i) decomposition of formic acid, (ii) dehydrogenation of ammonia borane, (iii) dehydrogenation of methanol. In this topics, the recent researches on hydrogen generation catalyzed by group 8 transition-metal complex are described, and the plausible reaction pathway of these reactions is also described.