METHOD OF PRODUCING OXIDE CATALYSTS FOR PROCESS OF OXIDATIVE CONVERSION OF ETHANE TO ETHYLENE Russian patent published in 2017 - IPC B01J37/02 B01J23/31 B01J23/20 B01J27/57 

FIELD: chemistry.

SUBSTANCE: method of producing oxide catalysts of the composition: Mo₁V_aTe_bNb_cBi_dO_x, where a=0.20-0.40, b=0.15-0.35, c=0.05-0.25, d=0.005-0.07, x is the number of oxygen atoms required to maintain electroneutrality for the process of oxidative conversion of ethane in ethylene, includes the steps of preparing a wet precursor containing the MoVTeNb components contained in the catalyst, removing the solvent, stepwise calcining the dry MoVTeNb precursor, then impregnating the calcined precursor with a solution of the bismuth-containing compound and final heat treatment of the MoVTeNbBi precursor in an inert gas at a temperature of 500-600 °C. As a bismuth-containing compound, a freshly prepared neutral aqueous solution of a complex compound of bismuth carboxylate with ammonia is used.

EFFECT: high ethylene yield and simplification of the catalyst preparation process.

6 cl, 1 tbl, 9 ex