FIELD: chemical industry.
SUBSTANCE: method for purifying air from volatile organic compounds, in particular alcohols, specifically to a method for purifying air from ethanol. The method of air purification from ethanol by its adsorption and complete oxidation includes contacting air with a catalyst based on cobalt oxide of the formula Co3O4 deposited on a carrier - zirconium oxide, when heated. As a carrier, zirconium oxide doped with lanthanum is used, with the ratio of catalyst components, wt.%: LaCoO3 is 20, the rest is the carrier. Air containing ethanol impurities is contacted with a catalyst during microwave heating of the catalyst layer with a radiation power and frequency of 50 W and 3.8 GHz, respectively, at a temperature of 50-160°C and volumetric feed rate of raw materials 6000 h-1.
EFFECT: complete purification (100%) of air from ethanol and reduction of process temperature to 50°C due to the adsorption of ethanol at this temperature and its complete oxidation when the temperature rises to 160°C, which is significantly lower compared to the prototype due to the use of microwave heating of the catalyst composition Co3O4(20%)/ZrO2-La.
1 cl, 3 ex
