Chemical Preparation Of Nano-size Lanthanide Metal Hydride And Nano Lanthanide Metal Powder

Lanthanum hydride is prepared easily by two chemical methods under mild conditions (45 ℃,normal pressure). We investigated the influent of initiating agent and solvent to reactions. Transmission electron micrographs showed that lanthanum hydrides generated are in the form of nanoparticles with an average primary particle size around 20-40 nm. The structure of the lanthanum hydride characterized by the X-ray powder diffraction (XRD) is cube. The reaction of lanthanide powders with anthracene in the presence of initiating agent in tetrahydrofuran(THF)under mild conditions generated organolanthanide compounds. It was found that the decomposition of the organolanthanide compounds in vacuum could give rise to lanthanide powders of nanometric size. Transmission electron micrographs showed that the lanthanide powders formed were in the form of nanoparticles with an average primary particle size around 20-40 nm. Nanometric lanthanide hydrides, organolanthanid complex and nanometric lanthanide metal powders are sensitive to air and moisture, so all manipulations are carried under Ar atmosphere with Schlenk technology.We develop the data processing software of the physical chemistry experiment programmed by Visual Basic 6.0 and sign contract with higher education press.