FIELD: chemistry.
SUBSTANCE: invention related to a method of producing a catalyst, involving pre-treatment of an inert block support made from Al-containing foil by calcining at temperature of (850-920)°C in an air current for (12-15) hours and depositing an intermediate coat on its surface at room temperature, said coat being modified aluminium oxide from a suspension containing aluminium hydroxide, aluminium nitrate, cerium nitrate, basalt flake from super-thin basalt fibre with elementary particle diameter of 1-3 mcm and length of up to 1000 mcm and water, heat treatment of the block with the intermediate coat in an air current at (680-700)°C and ageing for 70-90 minutes and depositing one or more catalytically active platinum group metals by water impregnation of their precursors, drying at (100-120)°C and final heat treatment at staged raise of temperature up to (350-400)°C and ageing for 5-6 hours. Wherein the intermediate coat is deposited from a suspension additionally containing cupric nitrate, cobalt nitrate and aluminium metasilicate of less than 10 mcm fraction in the following ratio of its components, wt %: aluminium hydroxide - (17.9-24.8), aluminium nitrate - (1.5-2.8), cerium nitrate - (5.1-9.8), cupric nitrate - (1.1-1.9), cobalt nitrate - (1.0-1.5), basalt scales - (1.2-2.5), aluminium metasilicate - (1.1-1.6), water - up to 100.
EFFECT: improved operational characteristics of block CO oxidation catalyst under the conditions of emergency gas purification, simplified catalyst preparation technology.
3 cl, 2 tbl, 18 ex
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