Interaction between copper(Ⅱ) oxide and polystyrene was studied in the temperature range of 20-600 deg C using derivatography. The experiments were carried out for the stoichiometric mixture of reagents at the heating rates of 2,5-20,0 deg C/min. Based on DTA and DTG curves and the results of the data processing, it was shown that the reduction process is characterized by different activation energy being dependent on the conversion degree: the activation energy is low at its little values (5-30 percent) and that is significantly higher at lager values (85-90 percent) (88 and 120 kJ/mole respectively). A supposition is made that these facts are related to charging the content of products evolving during decomposition of polystyrene.
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