A noncovalent attachment of propylamine (PA), butylamine (BA), ethylenediamine (EDA) and tetramethylenediamine (TMD) - functionalized Graphene oxide (GO) to cobalt (II) phthalocyanine (CoPc) as a novel solid base catalyst was synthesized by mixing method. The synthesized catalysts were characterized using UV-vis, XRD, FTIR, FESEM, EDAX, MAP and HRTEM analyses. The catalytic performances of the synthesized catalyst were evaluated for the oxidation of various thiols in n-heptane under alkali free condition, and were in the following order: EDAGO-CoPc > TMDGO-CoPc > PAGO-CoPc > BAGO-CoPc. For better investigation, the potential of EDAGO-CoPc catalyst was investigated for thiols oxidation in real gasoline. According to the results, 96.55% thiols were removed from real gasoline over the EDAGO-CoPc catalyst. After eight runs of experiment, no significant change was observed in the activity of EDAGO-CoPc catalyst for thiols oxidation in real gasoline.
