Abstract
A new type of titanium phthalate (Ti-PA) catalyst was prepared by exchange method of phthalic acid and isopropyl titanate, which is never been reported before. The Ti-PA catalyst was characterized by FT-IR, TG, Uv–vis, BET, SEM, and EDS. The Ti-PA catalyst shows good catalytic activity in the alcoholysis reaction of polyethylene terephthalate (PET) and optimal experimental conditions for the alcoholysis process were optimized by response surface methodology; the Ti-PA catalyst provided a BHET yield of 81.98% for reaction lasting 3.98 h at 191 °C of 0.86% catalyst and 13.7 ml ethylene glycol; the model has good reliability. The kinetics and reaction mechanism of the process were explored and apparent activation energy is 75.52 kJ/mol. Finally, the good catalytic activity of Ti-PA was illustrated by comparing it with currently reported catalysts.
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Guoliang Shen and Jing Zhu conceived, planned, and supervised the experiment. Ruiyang Wen was responsible for the main part of the experiment, including the preparation of the catalyst and its application in PET degradation. Yang Yu, Shijie Xu, and Jie Wei were responsible for the characterization and analysis of the catalyst; Yue Huo and Ruiyang Wen wrote the first manuscript and all authors reviewed the manuscript.
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Wen, R., Shen, G., Yu, Y. et al. Optimization of Ti-PA efficiently catalytic the alcoholysis of waste PET using response surface methodology. Environ Sci Pollut Res (2024). https://doi.org/10.1007/s11356-024-33371-1
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DOI: https://doi.org/10.1007/s11356-024-33371-1