Methanol oxidation on aluminium-copper-silicon alloys coated with polyprrole

Methanol oxidation on the aluminum-copper-silicon alloys which are coated with polyprrole were investigated in 1 N H₂SO₄ by using electrochemical method. For this purpose, first the current densitypotential curve of alloys were obtained in 1 N H₂SO₄ + x M pyrrole solutions, determined passive zones are coated with polyprrole alloys in H₂SO₄ solutions. Then the current-potential curves were obtained in 1 N H₂SO₄ + x M methanol with aluminum alloys and these are expected at +1.5 V against to the standard calomel electrode (SCE) at the different times in 1 N H₂SO₄ + 10⁻³ M pyrrole that were obtained with different scan rates. The extreme methanol oxidation was seen on the E110 and E140 alloys which are coated with polyprrole. Embedded pH electrode solutions which were coated with polypyrrole in 1 N H₂SO₄ and 1 N H₂SO₄ + 0.5 M methanol solutions were measured after 30 minutes at +2.1 V.