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An attempt has been made to prepare terephthalic acid(TPA) by solvent-free oxidation of p-xylene(PX) with air over tetra(pchlorophenylporphinato) manganese chloride(T(p-Cl)PPMnCl) and cobalt acetate.The co-catalysis between T(p-Cl)PPMnCl and Co(OAc)_2 has been discovered under solvent-free conditions.TPA yield could be increased significantly when T(p-Cl)PPMnCl and Co(OAc)_2 were used together.The addition of T(p-Cl)PPMnCl into the reaction mixture over Co(OAc)_2 significantly accelerated the rate-determining step of the oxidation process of PX to TPA.The effect of temperature on reaction was also investigated.
An attempt has been made to prepare terephthalic acid (TPA) by solvent-free oxidation of p-xylene (PX) with air over tetra (pchlorophenylporphinato) manganese chloride (T (p-Cl) PPMnCl) and cobalt acetate.The co-catalysis (TcC) _2 has been discovered under solvent-free conditions. TPA yield could be more significantly when T (p-Cl) PPMnCl and Co (OAc) _2 were used together. T (p-Cl) PPMnCl into the reaction mixture over Co (OAc) 2 significantly accelerated the rate-determining step of the oxidation process of PX to TPA. The effect of temperature on reaction was also investigated.