CATALYST FOR PRODUCTION OF ETHYLENE BY OXIDATIVE DEHYDROGENATION OF ETHANE, METHOD FOR PREPARATION THEREOF AND METHOD OF OXIDATIVE DEHYDROGENATION OF ETHANE WITH USE OF CATALYST

摘要

FIELD: technological processes.;SUBSTANCE: invention relates to a catalyst for the synthesis of ethylene during an oxidative dehydrogenation reaction of ethane, as well as to a method for preparing this catalyst and a method for oxidative dehydrogenation of ethane using a catalyst. Catalyst for producing ethylene is described by oxidative dehydrogenation of ethane, which is a complex oxide composition supported on silica comprising 20–80 wt.% (Mo₁V_aNb_bSb_cCe_dO_x, 80–20 wt.% SiO₂), where: a = 0.20–0.40; b = 0.02–0.30; c = 0.10–0.35; d = 0.001–0.1; x – the number of gram atoms of oxygen corresponding to electroneutrality. Method of preparing this catalyst is described, comprising the preparation of an aqueous suspension containing, in predetermined amounts, components Mo, V, Nb, Sb, Ce and a carrier of SiO₂, spray drying the slurry to obtain the catalyst powder, step drying the powder in air in a drying oven and heat treatment in a stream of helium or argon. Method for producing ethylene by oxidative dehydrogenation of ethane is also described in the presence of the catalyst described above.;EFFECT: technical result consists in reduced number of technological stages and increased yield of ethylene to 72–73 %.;8 cl, 1 tbl, 23 ex