Under Mild Conditions, The Catalytic Synthesis Of Nano-lanthanide Metal Hydride And Nano-nah Highly Active Research

1 Lanthanide hydrides (M = La, Nd, Sm, Dy and Yb) can be prepared easily by the direct hydrogenation of lanthanide metals catalyzed by TiCl4 in tetrahydrofunan (THF) under normal pressure. The rate of hydrogenation decreased with increasing atomic number of lanthanides. Transmission electron micrographs showed that the resulted lanthanide hydrides were in the form of nanoparticles with an average primary particle size around 20-40 nm. The structures of their hydrides were characterized by the X-ray powder diffraction (XRD) method. And the effects of the various parameters to the catalytic synthesis reaction of lanthanide hydrides were discussed.