ИСТИНА

Developing alow-temperature catalytic technologyfor removal of CO emitted bygasoline and diesel vehicles has attracted much attention.One of the mostpromising solutionscould bethe ozone catalytic oxidation (OZCO). This method is effectivefor removalof volatile organic compounds (VOCs) such as toluene, benzene, acetone, formaldehyde, n-alkanes and etc[1]. It issupposedthat the main step of OZCOis catalytic ozone decomposition, which results in a formation of highly reactive oxygen species able to oxidize VOCsat ambient and near-ambient temperatures.Althoughmany studies have been conducted on the OZCO of VOCs, there are onlya few papers reported the efficiencyofthis method for CO control [2–4].Among the catalytic systemsproposed in the literature (Co, Ni, Ag, Cu, Mnsupported on different carriers),Ag/Al2O3demonstrates apromising activity and stabilityin OZCO of CO[5]. However, to thebest of our knowledge, asystematic study of theoptimal Ag loadinghas not been carried out.Therefore, the main aims of our work are: (i) synthesis and characterization of the Ag/Al2O3catalysts with the different Ag content, (ii)investigation of theircatalytic performance in OZCOof CO, (iii) revealingstructure–activity relationships.