Phase transformations during dynamic dehydrogenation of Ti1-xVxH2 (x = 0.1; 0.2; 0.3) were studied using in situ Synchrotron X-Ray Diffraction (SR XRD) and non-isothermal kinetics experiments. The main dehydrogenation path for ?-Ti1-xVxH2 was found to be ? ? d ? ß ? ßalloy. Body-centred tetragonal d-hydride was found to be an intermediate phase of the ? ? ß transformation in Ti0.8–0.9V0.1–0.2H2. TDS, in situ SR XRD and isoconversional kinetics studies showed that hydrogen desorption from Ti1-xVxH2 is composed of simultaneous reactions taking place between 300 and 600 °C. The effective activation energy of hydrogen desorption depends on the vanadium contents and the reaction pathway, increasing from 21 kJ/mol H2 (? ? d) to 60–110 kJ/mol H2 (d ? ß).