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Title: A new role of alumina in polyethylene degradation: A step towards commercial polyethylene recycling
Authors: Pant, Deepak
Keywords: Alumina;Polyethylene degradation;Triphase catalysts
Issue Date: Dec-2005
Publisher: CSIR
Abstract: Degradation of low-density polyethylene (LDPE) to liquid HCs was examined in a 1:1 polymer to alumina weight ratio in the presence of varying amounts of H2SO4. The oil fraction, obtained as a result of degradation, was thoroughly analyzed by GC/MS measurements. Increase in the amount of acid increases the amount of aromatics, with pronounced formation of oxygenated aromatics. Alumina, besides providing a thermal background, its usual role in polyethylene degradation, acts as a triphase catalyst by way of bringing the organic phase (melted polymer) and the aqueous phase (H2SO4) in intimate contact to facilitate the process of degradation.
Page(s): 967-972
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.64(12) [December 2005]

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