90. Elucidation of Hydrogen Mobility in Coal under Reduction Atomsphere Conditions Using a Tritium Pulse Tracer Method

Abstract

Hydrogen exchange reaction of three Argonne coals (Illinois No. 6, Upper Freeport and Pocahontas #3) and Wandoan coal with tritiated gaseous hydrogen were performed at several temperatures. The hydrogen exchange ratios of coals with hydrogen were determined from the radioactivity of introduced into coals. Further, the hydrogen exchange rate of coal was estimated by either the pulse delay of [^3H]H_2 pulse or the release rate of [^3H]H_2 from tritiated coal under reduction atomsphere.