CATALYST FOR CLEANING EXHAUST GAS AND EXHAUST GAS CLEANING APPARATUS USING SAID CATALYST Russian patent published in 2012 - IPC B01J23/10 B01J23/44 B01J23/78 B01J23/847 B01J23/89 B01D53/56 B01D53/94 

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst and apparatus for cleaning exhaust gas. Said catalyst contains a composite oxide of general formula (1): {A_XA'_{1-x)} {B_yB'₍₁-_y)}_(1-z) (PM1)_zO₃ (1), where A is lanthanum (La), component A' is barium (Ba), component B is iron (Fe), component B' is niobium (Nb) and component (PM1) (noble metal) is palladium (Pd), and where x ranges from more than 0.30 to 0.95 or less, y ranges from 0.07 or more to 0.94 or less, and z ranges from 0.01 or more to 0.10 or less. The apparatus for cleaning exhaust gas in order to reduce concentration of nitrogen oxides includes: a trapping device for trapping solid particles in the exhaust gas and said catalyst for cleaning exhaust gas lying after the trapping device in the direction of flow of exhaust gas. Versions of the apparatus for cleaning exhaust gas are provided.

EFFECT: achieving high degree of denitrification.

10 cl, 6 dwg