METHOD OF PREPARING CATALYST FOR TREATING INTERNAL COMBUSTION ENGINE EXHAUST GASES AND CATALYST PREPARED BY THIS METHOD Russian patent published in 2006 - IPC B01J37/25 B01J23/63 B01J21/00 B01J35/04 B01D53/94 

FIELD: catalyst preparation methods.

SUBSTANCE: invention relates to a method for preparing catalyst and to catalyst no honeycomb-structure block ceramic and metallic carrier. Preparation procedure includes preliminarily calcining inert honeycomb block carrier and simultaneously applying onto its surface intermediate coating composed of modified alumina and active phase of one or several platinum group metals from water-alcohol suspension containing, wt %: boehmite 15-30, aluminum nitrate 1-2, cerium nitrate 4-8, 25% ammonium hydroxide solution 10-20, one or several precipitate group metal salts (calculated as metals) 0.020-0.052, water-to-alcohol weight ratio being 1:5 to 1:10; drying; and reduction. Thus prepared catalyst has following characteristics: specific coating area 100-200 m²/g, Al₂O₃ content 5-13%, CeO₂ content 0.5-1,3%, active phase (on conversion to platinum group metals) 0.12-0.26%.

EFFECT: simplified technology due to reduced number of stages, accelerated operation, and high-efficiency catalyst.

5 cl, 1 tbl, 10 ex