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Catalytic degradation of polyethylene over ferrierite

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The applicability of ferrierite to the catalytic degradation of polyethylenes, such as high-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE), and the effect of its acidity have been investigated using a thermogravimetric analyzer and batch reactor. Quantitative analyses of the products were also carried out using GC-MS and GC-FID. The apparent activation energy of the catalytic degradation of polyethylene was significantly lowered by the addition of the catalysts. Ferrierite, with a low SiO2/Al2O3 ratio, exhibited pronounced selectivity for the production of valuable olefins and excellent resistance to coke formation. All ferrierites generated mainly C6–C10 hydrocarbons, and seemed to have the catalytic stability in the degradation of polyethylene.

Affiliations: 1: Faculty of Environmental Engineering, University of Seoul, Seoul 130-743, South Korea; 2: Department of Chemical Engineering, Kongju National Univer4sity, Gongju 314-701, South Korea; 3: Division of Advanced Materials Engineering, Kongju National University, Gongju 314-701, South Korea; 4: New Chemistry Research Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, South Korea


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