FIELD: chemistry.
SUBSTANCE: invention refers to the catalyst composition; to the method of its preparation and to the method of ethane and/or ethylene selective oxidation to acetic acid. The catalyst composition for ethane and/or ethylene selective oxidation to acetic acid on the carrier includes the following elements: molybdenum, vanadium, niobium and titanium in combination with oxygen corresponding to the empiric formula MoaTicVdNbeOx, where a, c, d, e are such gram-atomic element ratio whereat 0<a≤1; 0.05<c≤2; 0<d≤2; 0<e≤1 and x is element valency in the said composition. The described above catalyst composition includes the following stages: (a) preparation of the mixture containing molybdenum, vanadium, niobium and titanium in the solution; (b) drying of the obtained solid material and (c) calcination of the dried solid material with obtaining of the catalyst composition. The method of acetic acid selective preparation from the gaseous mixture containing ethane and/or ethylene includes contacting of the gaseous mixture with oxygen-containing gas at increased temperature in the presence of the described above catalyst composition.
EFFECT: increase of catalyst composition selectivity in relation to acetic acid.
22 cl, 3 tbl, 5 ex
