The electrochemical behaviour of THF on Pt in H2SO4 using cyclic voltammetry was examined. The products were identified with GC-MS, The two basic products were found to be gamma-butyrolactone and 2-hydroxytetrahydrofuran with current efficiencies up to 54.4 and 41.2% correspondingly. In addition, the UPD of Tl and Cu were shown to inhibit THF oxidation, since the deposits probably block active sites on the electrode surface.