IMPROVED MIXED METAL OXIDE AMMOXIDATION CATALYSTS Russian patent published in 2019 - IPC B01J23/00 B01J23/28 B01J23/31 B01J23/745 B01J23/887 B01J37/03 C07C253/26 

FIELD: chemistry.

SUBSTANCE: invention relates to an improved catalyst for use in ammoxidation of an unsaturated hydrocarbon into an unsaturated nitrile. Described is a catalyst composition containing a complex of metal oxides, wherein relative ratios of said elements in said catalyst are represented by the following formula: Mo_m Bi_a Fe_b A_c D_d E_e F_f G_g Ce_h Rb_n O_x, where A is at least one element selected from a group consisting of lithium, sodium, potassium and cesium; and D is at least one element selected from the group consisting of nickel, cobalt, manganese, zinc, magnesium, calcium, strontium, cadmium and barium; E is at least one element selected from the group consisting of chromium, tungsten, boron, aluminium, gallium, indium, phosphorus, arsenic, antimony, vanadium and tellurium; F is at least one element selected from the group consisting of lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, yttrium, titanium, zirconium, hafnium, niobium, tantalum, aluminium, gallium, indium, thallium, silicon, lead and germanium; G is at least one element selected from the group consisting of silver, gold, ruthenium, rhodium, palladium, osmium, iridium, platinum and mercury; and a, b, c, d, e, f, g, h, m, n and x respectively represent atomic ratios of bismuth (Bi), iron (Fe), A, D, E, F, G, cerium (Ce), rubidium (Rb) and oxygen (O) relative to "m" of molybdenum (Mo) atoms, wherein a is a number greater than 0 but less than or equal to 7, b is 0.1–7, c is a number greater than 0 but less than or equal to 5, d is 0.1–12, e is 0–5, f is 0–5, g is 0–0.2, h is 0.01–5, m is 10–15, n is a number greater than 0 but less than or equal to 5, x is the number of oxygen atoms, required to satisfy valence requirements of other present constituent elements; and wherein 0.3 ≤ (a + h)/d, 1.2 ≤ h/b ≤ 5 and 0 < (n + c)/(a + h) ≤ 0.2.

EFFECT: technical result is creation of improved catalyst, high output of acrylonitrile and/or high selectivity to acrylonitrile.

22 cl, 10 ex, 3 tbl