Study of catalysts prepared by zirconium tetrahydroborate reaction with oxidic carriers by the infrared spectroscopy method

Using the methods of IR-spectroscopy and chemical analysis, interaction of zirconium tetrahydroborate with silica gel and aluminium oxide, composition of the surface complexes formed and their transformations in the process of thermal activation of the catalysts are studied. It is established that decomposition of the surface complexes of the type (Eh-O)sub(n) - Zr(BHsub(4))sub(4-n) (Eh=Si; Al; n=1-2) occurs when catalysts heating with the formation of surface zirconium hydrides, which are alkylated by ethylene under polymerization conditions