THE EFFECT OF THE CARRIER NATURE AND THE METHOD OF PREPARATION OF OXIDE CATALYSTS CONTAINING INDIUM ON THEIR ACTIVITY IN THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN MONOXIDE WITH C1-C4 HYDROCARBONS

The activity of samples containing indium in the selective catalytic reduction (SCR) of NO with C1-C4 hydrocarbons depends on nature of the carrier, Al2O3, ZrO2, the quantity of indium oxide, and the method of its introduction. The most active catalysts (2.5-5.0% In2O3/Al2O3) are stable to water and are characterized by a large overall concentration of oxide centers.