Catalytical Capability of CuO-CeO₂ for CO Oxidation and its Application in Cigarette

CuO-CeO₂ was prepared via coprecipitation and calcination.The effects of Ce content and calcination temperature on the catalytic activity of CuO-CeO₂ and the effects of CuO-CeO₂ addition to cigarette filler on the tar,nicotine,CO deliveries and taste of cigarette smoke were investigated.The results showed that:CuO-CeO₂ containing CeO₂ of 10% calcined at 250℃ for 3 hours had better catalytical capability for CO oxidation.The CO delivery of cigarette containing 0.4% of CuO-CeO₂ decreased by 12%-13% comparing with the control,while tar,nicotine and smoke taste changed unsubstantially,and the catalytical capability of CuO-CeO₂ for oxidizing CO in cigarette smoke was not significantly affected by storage time.