Hydrogen-spillover Characteristics of Carbon-supported Palladium-base Dehydrogenation Catalyst for Electrode of 2-Propanol/Acetone-based Thermodriven Cell

Abstract

A 2-propanol/acetone-based thermodriven cell, consisting of 2-propanol dehydrogenation at the negative electrode and acetone hydrogenation at the positive electrode, is possible to convert low-quality thermal energy lower than 100℃ into electric energy directly. An efficient hydrogen-spillover ability was verified by use of carbon-supported metal catalysts under boiling and refluxing conditions, where the catalyst-to-substrate amount ratio was important. The size effect of palladium fine particles on hydrogen spillover was remarkable. It was found that the composite effect of palladium with ruthenium took an essential role as well.