“…The calculated total amount of palladium metal on this catalyst was 15.04 mmol/kg of catalyst. The amount adsorbed exceeds this value by a factor of approximately 2-5 (depending on whether the adsorbing species is H2 or D2) already at an experimental temperature below 373 K. The H/Pd value reaches a limit of about 33 at the highest temperature, and this is well above previously published data (Curtis Conner et al, 1983). The dispersion of palladium, mentioned earlier, was 42.9%, and as the ratio of H/Pd in the a-phase of the palladium-hydrogen system never exceeds 0.01 (Scholten and Knovalinka, 1966) for low-temperature and high partial pressure hydrogen isotopes, the amount of hydrogen isotopes absorbed can be disregarded from the total amount adsorbed on the dispersed metal.…”