Citation: Yang Xiao, Xiao Yan Zhang, Qin Bo Wang, Ze Tan, Can Cheng Guo, Wei Deng, Zhi Gang Liu, He Fei Zhang. The preparation of terephthalic acid by solvent-free oxidation of p-xylene with air over T(pCl)PPMnCl and Co(OAc)₂[J]. Chinese Chemical Letters, ;2011, 22(2): 135-138. doi: 10.1016/j.cclet.2010.09.027 shu

The preparation of terephthalic acid by solvent-free oxidation of p-xylene with air over T(pCl)PPMnCl and Co(OAc)₂

College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China

Received Date: 25 May 2010

An attempt has been made to prepare terephthalic acid (TPA) by solvent-free oxidation of p-xylene (PX) with air over tetra(p-chlorophenylporphinato)manganese chloride (T(pCl)PPMnCl) and cobalt acetate. The co-catalysis between T(pCl)PPMnCl and Co(OAc)₂ has been discovered under solvent-free conditions. TPA yield could be increased significantly when T(pCl)PPMnCl and Co(OAc)₂ were used together. The addition of T(pCl)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.
- Terephthalic acid,
- Solvent-free,
- p-xylene,
- Oxidation,
- Manganese porphyrin,
- Cobalt acetate
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