MOLECULAR-SIEVE CATALYST FOR WASTE GAS PURIFICATION Russian patent published in 2020 - IPC B01J37/02 B01J29/70 B01J29/72 B01J29/76 B01J29/78 B01J35/00 B01J35/02 B01J35/04 B01J37/00 C01B39/48 

FIELD: chemical or physical processes.

SUBSTANCE: invention relates to a catalyst for cleaning exhaust gas, containing a copper-loaded zeolite with an AFX frame and a silica module (KM) from 15 to 50, wherein said zeolite with AFX frame has alkalinity after synthesis of less than 3 weight percent and has average crystal size of 0.1 to 15 microns. Invention also relates to a porous coating with said catalyst, to an exhaust gas cleaning system and to a method of cleaning exhaust gas.

EFFECT: technical result consists in obtaining improved SCR catalysts capable of efficiently operating at temperatures between 350 °C and 550 °C.

14 cl, 2 ex, 2 dwg