Analysis of some results on Pd-H and Ni-H systems studied in high-pressure-hydrogen conditions

The analysis of some published results of experimental studies on palladium-hydrogen and nickel-hydrogen systems in high-pressure-hydrogen conditions is presented together with the calculation and extrapolation methods used. The hydrogen-to-palladium atomic ratios, ${\mathcal{R}}_{\frac{\mathrm{H}}{\mathrm{Pd}}}\ge 1$, and the hydrogen-to-nickel atomic ratios, ${\mathcal{R}}_{\frac{\mathrm{H}}{{\mathrm{N}}_{\mathrm{i}}}}\ge 1$, were never obtained for gaseous-hydrogen pressure values up to 28 kbar.