低品位熱で有機化合物から水素をとる(<特集>熱利用技術の新展開 : 太陽エネルギー利用とクリーン燃料製造)

概要

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Hydrogen evolution from 2-propanol, aqueous methanol, methylcyclohexane or decalin was performed efficiently by heating at rather low temperatures (90〜280℃) with the aid of superheated liquid-film catalysis under boiling and refluxing conditions. Thermal energy conversion into chemical energy was accomplished through endothermic dehydrogenation, which made it possible to utilize the 2-propanol/acetone pair as either a chemical heat pump or a thermo-regenerative fuel cell. Both methylcyclohexane and decalin, i.e., chemical hydrides, are important as the hydrogen carrier from the viewpoint of long-term storage and long-distance transportation. High CO_2 selectivity from aqueous methanol in a one-pot reaction process is noteworthy, because it is a consequence of super-equilibrium nature of this catalysis.
一般社団法人日本エネルギー学会の論文
2004-12-20