Abstract
ABSTRACT1,8,15,22-Tetra-aminophthalocyanine/graphite (ZnTAPc/Gr) composites were prepared by chemical grafting method. The property of styrene oxidation in the presence of tert-butyl hydroperoxide (TBHP) as an oxidant was studied. The prepared catalysts were characterized by UV-Vis spectroscopy (UV-Vis), X-ray diffraction (XRD), infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), Raman spectroscopy, UV-vis diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The obtained ZnTAPc/Gr composites were employed as catalyst for styrene oxidation in presence of tert-butyl hydroperoxide (TBHP) as oxidant. The results showed that styrene was oxidized efficiently in the ZnTAPc/Gr-TBHP system. The enhancement of the catalytic activity of ZnTAPc/Gr composites was investigated in terms of different oxidation conditions. It was found that the optimum oxidation condition was 0.04 g catalyst, 10 h reaction time and reaction temperature of 100°C. Under this condition, the conversion and the selectivity of styrene oxide was up to 73% and 84%.
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