Gas chromatographic study of volatile oxides and hydroxides of Re, Tc, Os, Ru and Rr-II Thermochromatographic investigations.

The enthalpies and entropies of absorption on quartz granules of the oxides and hydroxides of Re, Tc, Os, Ru and Ir have been determined by thermochromatography. The separations of these elements have been achieved with dry and moist oxygen as reactive and carrier gas.