Catalytic degradation of waste rubbers and plastics over zeolites to produce aromatic hydrocarbons

Catalytic conversion of waste rubbers and plastics into aromatic hydrocarbons is a promising approach to management energy recovery. In the present study, acidic HY zeolites were supported by cobalt, iron, zirconium, catalysts characterized powder X-ray diffraction, nitrogen adsorption-desorption, ammonia temperature programmed desorption, photoelectron spectroscopy, pyridine-Fourier transform infrared spectroscopy. The catalytic degradation polybutadiene (BR) was conducted investigate mechanism evaluate activity zeolites. Experimental results indicated that loaded zirconium iron led higher content Lewis acid sites as opposed cobalt one. Compared with non-catalytic pyrolysis BR, (Zr/HY) 10-fold increase in production distinctively high selectivity 97.9%. A series polymers including tires (WT), polyethylene (PE), polycarbonate (PC), subjected explore effects polymer type on generation, BR most effective substrate, yield enhancement reaching 2.4 over Zr/HY. co-pyrolysis probe effect structure formation, where significant synergistic observed PE co-fed PC run.