SILICON DIOXIDE-SUPPORTED CATALYST Russian patent published in 2015 - IPC B01J23/28 B01J23/22 B01J23/16 B01J27/57 B01J23/10 B01J21/08 B01J35/10 B01J37/08 C07C253/24 C07C255/08 

FIELD: chemistry.

SUBSTANCE: invention relates to a silicon dioxide-supported catalyst used to produce a corresponding nitrile in vapour-phase catalytic ammoxidation of propane or isobutane. Said catalyst contains a metal oxide of formula (1): MoV_aNb_bX_cT_dZ_eO_n … (1), wherein X is at least one or more elements selected from Sb and Te; T is at least one or more elements selected from Ti, W, Mn and Bi; Z is at least one or more elements selected from La, Ce, Yb and Y; and a, b, c, d and e are in the ranges 0.05≤a≤0.5, 0.01≤b≤0.5, 0.001≤c≤0.5, 0≤d≤1, and 0≤e≤1, respectively, and n is a value which satisfies atomic valence requirements. The silicon dioxide-supported catalyst has mean pore size of 60-120 nm, total pore volume of 0.15 cm³/g or higher, specific surface area of 5-25 m²/g, and crystal size of 40-250 nm determined by an X-ray diffraction method at peak (001) half-width. The invention also relates to a method of producing said catalyst and a method of producing a corresponding unsaturated nitrile.

EFFECT: present catalyst provides a low degree of combustion of ammonia and high output of the end product.

5 cl, 1 tbl, 17 ex