高分子－金属複合膜における水素透過膜の温度依存性

抄録

Hydrogen permeability membrane with high temperature dependence is available to produce hydrogen from ammonia that be used as the hydrogen carrier in an energy system because the membrane could control that hydrogen absorption and desorption with temperature. First, we measure a hydrogen permeability coefficient of some candidate materials by the equipment that had been designed in this laboratory. Second, the temperature dependences of the hydrogen permeability coefficient of the single layer membrane Polyimide (PI), Ni and SUS304 were evaluated. Third, the composite membrane PI/Pd that was produced by vacuum evaporation and then we measured the dependence. Since PI has a higher heat-resistant even in plastic, it was used the base of the composite membrane. The temperature dependence of the permeability of PI was the almost same as the results of other research. That of PI/Pd had also more dependence of the former materials at the same temperature range and the drastic change especially in the range from 384 K to 423 K because of its logarithmic variability. This PI/Pd composite might be available for the membrane of new hydrogen carrier energy system because can control hydrogen absorption and desorption by temperature.