COMPOSITION CONTAINING LANTHANUM-CONTAINING PEROVSKITE ON SUBSTRATE MADE FROM ALUMINIUM OR ALUMINIUM OXYHYDROXIDE, METHOD FOR PRODUCTION AND USE IN CATALYSIS Russian patent published in 2013 - IPC B01J21/04 B01J23/34 B01J23/10 B01J23/745 B82B1/00 B01J37/03 

FIELD: chemistry.

SUBSTANCE: invention relates to catalysts. Described is a catalyst composition which contains a perovskite of formula LaMO₃, where M is at least one element selected from iron, aluminium or manganese, in form of particles dispersed on an aluminium oxide or aluminium oxyhydroxide substrate, wherein after calcination at 700°C for 4 hours, the perovskite is in form of a pure crystallographic phase and the size of the perovskite particles does not exceed 15 nm or after calcination of said composition at 900°C for 4 hours, the size of perovskite particles does not exceed 18 nm, more specifically 15 nm, or after calcination of said composition at 1000°C for 4 hours, the size of perovskite particles does not exceed 22 nm. Described is a method of producing said catalyst compositions, involving: preparing a liquid medium containing aluminium oxide or aluminium oxyhydroxide and salts of elements La and M, optionally a substitute element, wherein said salts are selected from acetates, chlorides and nitrates; a base is added to the obtained medium until achieving pH of at least 9, which results in formation of a precipitate; the precipitate is separated from the reaction medium and, if chlorides or nitrates were used as said salts at the first step, the precipitate is washed; the precipitate is calcined. Described are catalyst systems which contain said composition, obtained using the method described above.

EFFECT: obtaining a novel catalyst composition.

13 cl, 1 dwg, 2 tbl, 7 ex