EQUILIBRIUM AND RATE OF HYDROGEN SORPTION IN TITANIUM SPONGE IN LOW PRESSURE RANGE

[摘要] References(7)Sorption equilibrium and rate relation of low-pressure hydrogen in commercial titanium sponge is needed for design of the helium purification system in a high-temperature gas reactor. Stepwise sorption experiments were performed in a high-vacuum Pyrex apparatus for 10-2-102 Pa between 723 and 1023 K. After correction for thermal transpiration effects, equilibrium data are well correlated by a dissociation-type equation and the heat of sorption is determined. Sorption rate is controlled by solid diffusion at temperatures below 923 K, and solid diffusivity is obtained.