MULTIMETALLIC MIXED OXIDES, ITS PREPARATION AND USE FOR THE OXIDATIVE DEHYDROGENATION OF ETHANE FOR PRODUCING ETHYLENE

摘要

A layered multimetallic mixed oxide (LMMO) is characterized by one or more diffraction peaks at 52θ15, preferably between 102θ15. The catalysts can be represented by the general formula:; M1M2M3O_δ;whereinM1 is selected from the group of Ag, Au, Zn, Sn, Rh, Pd, Pt, Cu, Ni, Fe, Co, an alkaline metal, an alkaline earth metal, a rare earth metal, or mixtures thereof.M2 is selected from the group of Ti, Hf, Zr, Sn, Bi, Sb, V, Nb, Ta and P, or mixtures thereof.M3 is selected from the group of Mo, W and Cr, or mixtures thereof.δ depends on the amount and oxidation state or valence of the other components, also it depends on the starting materials, preparation method and the activation process, and where the catalyst exhibits at least one X-ray diffraction peak between 52θ15.