STUDIES OF HYDROGEN-DEUTERIUM EXCHANGE ON MG2NI HYDRIDE

Isotopic separation of hydrogen isotopes on metal hydrides has shown p romising results so far. In this work. separation of hydrogen and deut erium on magnesium nickel hydride was investigated by mass spectrometr ic analysis of the desorbed ps. Enrichment of deuterium was studied in the temperature intervals where structural and chemical composition c hanges were observed from previous DSC measurements and from pressure- temperature-composition relations. The hydrogen/deuterium ratio was al so measured as a function of time during isothermal desorption at vari ous temperatures. The analysis was performed on fresh hydride samples as well as on samples kept for several days under hydrogen overpressur e at room temperature.