OXIDE CATALYST AND METHOD OF PRODUCING THEREOF, AS WELL AS METHODS OF PRODUCING UNSATURATED ALDEHYDE, DIOLEFIN AND UNSATURATED NITRILE Russian patent published in 2017 - IPC B01J23/88 C07C5/48 C07C11/167 C07C45/35 C07C47/22 C07C253/26 C07C255/08 

FIELD: chemistry.

SUBSTANCE: oxide catalyst has the following characteristics: (1) the oxide catalyst comprises molybdenum, bismuth, iron, cobalt and element A which ionic radius is larger than 0.96 Å (except for potassium, cesium and rubidium); (2) the atomic ratio of a bismuth to 12 atoms of molybdenum 1≤a≤5 the atomic ratio of b iron to 12 atoms of molybdenum is 1,5≤b≤6, the atomic ratio of the c element A to 12 atoms of molybdenum is 1≤c≤5, and the atomic ratio of d cobalt to 12 atoms of molybdenum is 1≤d≤8; and (3) the oxide catalyst comprises a disordered phase, which consists of a crystal system which comprises molybdenum, bismuth, iron and the element A. Method of producing oxide catalyst, method of producing unsaturated aldehyde, method of producing diolefin and method of producing unsaturated nitrile are proposed as well.

EFFECT: invention provides an oxide catalyst which prevents reductive decomposition of catalyst even during industrial operation for a long time.

14 cl, 16 dwg, 11 tbl, 43 ex