FIELD: rendering harmless of exhaust gases by catalysts. SUBSTANCE: catalyst for cleaning exhaust gases from nitrogen oxides by their reduction with combustion gases based on chromium, iron, copper, zinc, nickel and aluminium oxides presents mechanical mixture of industrial catalysts STK and NTK-10-1 taken in ratio of (0.5-5.0):1. Attained on the given catalysts in one stage is practically 100% conversion of oxides at 200-400 C in the presence of ample amount of oxygen (up to 20 vol.). Supplied reducing gas-to-oxygen ratio in exhaust gases is within 0.06-0.80. EFFECT: higher efficiency. 2 cl
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