Catalytic degradation of polyethylene over solid acid catalysts

摘要: Abstract In this study we investigated the catalytic degradation of polyethylene (PE) in a fixed-bed reactor composed melter and cracking bed. Solid acid catalysts, silica–alumina zeolites [HZSM-5, natural zeolite (NZ), Y zeolite, etc.] were screened for range 450–500°C. The products PE, especially liquid fraction, formed over solid analyzed by gas chromatography–mass spectroscopy (GC–MS). Compared with those obtained thermal degradation, are distributed narrow carbon numbers. fraction contained large amounts iso-paraffins aromatics, as present gasoline petroleum. NZ catalyst (clinoptilolite structure, occurring Youngil area Korea) was an efficient PE degradation. acidity characteristic pore structure appear to be responsible good performance. effects temperature, contact time, presence nickel metal on product distribution also discussed work.