The reduction behavior of CuO supported on ZrO2 and Al2O3 has been investigated by temperature-programmed reduction (TPR) and TG techniques. The oaldation activity of CO on the catalysts has also been studied. It has ...The reduction behavior of CuO supported on ZrO2 and Al2O3 has been investigated by temperature-programmed reduction (TPR) and TG techniques. The oaldation activity of CO on the catalysts has also been studied. It has been found that there is obvious difference between TPR profiles of ZrO2 supported CuO and Al2O3 supported catalysts, the monolayer CuO on ZrO2 is easily reduced, and which leads to a dramatic increase in oxidation activity.展开更多
Mn-O/ZrO2 catalysts were prepared by impregnation method and were characterizedby XRD, TPR and TPD-MS. The oxidation activity of CO on these catalysts was also studied.The restults indicated that the interaction betwe...Mn-O/ZrO2 catalysts were prepared by impregnation method and were characterizedby XRD, TPR and TPD-MS. The oxidation activity of CO on these catalysts was also studied.The restults indicated that the interaction between MnOx and ZrO2 would restrained the phasetransformation of ZrO2, and raised the dispersion of MnOx species on ZrO2. The highly-dispersedMnOx on ZrO2 is predominant contributors in catalytic activity of the Mn-O/ZrO2 catalysts.展开更多
文摘The reduction behavior of CuO supported on ZrO2 and Al2O3 has been investigated by temperature-programmed reduction (TPR) and TG techniques. The oaldation activity of CO on the catalysts has also been studied. It has been found that there is obvious difference between TPR profiles of ZrO2 supported CuO and Al2O3 supported catalysts, the monolayer CuO on ZrO2 is easily reduced, and which leads to a dramatic increase in oxidation activity.
文摘Mn-O/ZrO2 catalysts were prepared by impregnation method and were characterizedby XRD, TPR and TPD-MS. The oxidation activity of CO on these catalysts was also studied.The restults indicated that the interaction between MnOx and ZrO2 would restrained the phasetransformation of ZrO2, and raised the dispersion of MnOx species on ZrO2. The highly-dispersedMnOx on ZrO2 is predominant contributors in catalytic activity of the Mn-O/ZrO2 catalysts.