Hydrogen absorption properties of two titanium-rich uranium alloys, UTi_2 and UTi_4, were studied in order to prepare and identify the recently found ternary hydride. They slowly reacted with hydrogen of the initial pressure of 10^5Pa at 873K to form the ternary hydride. The hydrogenated specimen mainly consisted of the pursued ternary hydride but contained also U(or UO_2), TiH_x, and some transient phases. X-ray powder diffraction and Electron Probe Micro Analysis proved that it was the UTi_2H_x with the expected MgCu_2 structure, though all the X-ray peaks were broad probably because of inhomogeneity. This compound had extremely high resistance to powdering on its formation, which showed high potential utilities for a non-powdering tritium storage system or for other purposes
