Rotating catalytic disc platinum

Fig. 24. Variation of the initial catalytic rate (O) and the catalyst potential ( x ) with the square root of the platinum disc rotation speed in a reaction mixture containing 1 10 1 mol dm 3 K3Fe(CN)6, 0.05 mol dm 3 KI, and lmol dm a KNOa at 5°C. (After Freund and Spiro [6].)...

Also, in the case of the reduction of benzofuroxan [59] the UPD adlayers of Pb, Tl, and Bi strongly modify the catalytic activity and selectivity of the platinum electrode. Figure 5 shows the rotating-disc voltammograms for benzofuroxan reduction on Pt and Pt/M(upd), M = Pb, Tl, Bi. 

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