Catalytic depolymerization method for recovery of styrene monomer from polystyrene

ZSM-5 was synthesized by Zonouz kaolin and characterized by XRD, FT-IR and SEM micrograph. Then the catalysts prepared by mixing of metal compounds (Fe2O3, K2CO3, V2O5) and ZSM-5 zeolite and Prepared catalysts were characterized by XRD and content elements of the prepared catalysts were measured by ICP spectrometer. The prepared catalysts were applied for degradation of polystyrene and analysis of degradation products were done by GC, GC-MS. The highest yield of monomer styrene obtained from polystyrene was 97.5wt%.