“…In another study, Gu et al carried out the catalytic pyrolysis of mask waste to get aromatics over kieselguhr-based ZSM-5 catalyst in a fixed bed reactor at 550 °C. The researchers reported the highest pyrolysis oil yield of 44.3% . In a study, the researcher performed catalytic pyrolysis of LDPE using ZSM-5(80), Y (5.1), Ferrierite (20) zeolites, MCM-41 and γ-Al 2 O 3 as catalysts in a fixed bed reactor with LDPE sandwiched between Al 2 O 3 and zeolites at 500–650 °C.…”