Hierarchical catalyst applied to pyrolysis of plastic waste and residues from oil industry
International Journal of Development Research
Hierarchical catalyst applied to pyrolysis of plastic waste and residues from oil industry
Received 27th September, 2022; Received in revised form 10th October, 2022; Accepted 19th November, 2022; Published online 25th December, 2022
Copyright©2022, Antonio S. Araujo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The hierarquical zeolites with ZSM-5 structure (HZ5) catalyts was obtained using as silanizant agent the Phenyl-Amino-Propyl-Trimethoxysilane (PHAPTMS). The materials were synthesized by the hydrothermal method and characterized by X-ray diffraction, infrared spectroscopy, thermal analysis, surface acidity and scanning electron microscopy. The kinetic study by thermogravimetry of pure Atmospheric Residue of Petroleum (ATR) and High Density Polyethylene (HDPE) wastes werr performed with and without catalyst. By using the model-free kinetic method applying the integral TG curves, were estimated the activation energy for degradation of waste in function of temperature. The kinetic study of HDPE and ATR showed a decreasing in the activation energy when the hierarquical material was used in the catalytic process, at 500, 475 and 450 °C. In thermalcatalytic pyrolysis of HDPE selectivity afforded products with added values, which can be used in the petrochemical industry. In thermalcatalytic pyrolysis of ATR, this material potentiated the formation of C1-C4 (liquid gas); C5-C12 (gasoline) C13-C19 (diesel), providing better loads in the process and reducing the waste generated during petroleum refining.
