Application of the SPE Method to Organic Electrochemistry. XII. Lead Dioxide as a Mediator for Electrooxidation of Cinnamyl Alcohol on Pt-Nafion

Article abstract of DOI:10.1246/bcsj.64.1261

Lead dioxide was examined as a mediator to oxidize cinnamyl alcohol on Pt-Nafion, and was compared with manganese dioxide.Lead dioxide was deposited into Pt-Nafion.The current efficiency for the formation of cinnamaldehyde reached 65percent at room temperature, slightly lower than that in the case of using manganese dioxide.The production of cinnamic acid was more remarkable on Pb,Pt-Nafion than on Mn,Pt-Nafion because of the higher oxidation potential of the former.The mediatory action of both oxides was examined and compared with the activity in chemical oxidation using oxides produced separately.The oxidation of cinnamyl alcohol by lead dioxide was faster than that by the manganese dioxide.Their mediatory action reflected their chemical activity for the oxidation.