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The aim of the current work was evaluate the process of catalytic degradation of High Density PolyEthylene (HDPE) using AlMCM-41 nanostructured catalyst. This study was carried out by thermogravimetry and pyrolysis coupled to gas chromatography. The AlMCM-41 material was synthesized from an hydrogel containing cethyltrimethylammonium bromide (CTMABr) as template, pseudobohemite, fumed silica, sodium silicate and distilled water as solvent. These reactants were mixed in order to obtain a gel with the following composition: 1CTMABr:4SiO2:0.04 Al2O3:1Na2O:200H2O. The kinetic relative to the process of HDPE degradation was evaluated using Flynn-Wall model, in order to verify the influence of the AlMCM-41 material on the process. Clear differences were observed in the thermogravimetry behavior of the samples. Results obtained shown a remarkable effect of the catalyst in the acceleration of the degradation processes. The kinetic parameters obtained revealed a reduction in the activation energy of the catalytic decomposition as compared to the thermal process.

CATALYTIC DEGRADATION OF HIGH DENSITY POLYETHYLENE OVER NANOSTRUCTURED MATERIAL EVALUATED BY TG