The rates of peroxide formation in six model jet fuels were measured at various temperatures ranging from 43 to 120 °C with oxygen partial pressures ranging from approximately 10 to 1140 kPa. One of the fuels exhibited an increase in the rate of peroxide formation after alumina treatment, and three of the fuels showed induction periods. The results agreed with a kinetic model of the autoxidation process in that the peroxide concentration increased as the square of the stress duration. The rate of peroxide formation did not depend on the oxygen partial pressure. Arrhenius correlations of global rate constants determined from peroxide concentration time histories in accordance with the kinetic model showed that a single autoxidation mechanism explains the results obtained in the 43-120 °C temperature range. The results of this work encourage the development of a test method that predicts rate of peroxide formation at ambient conditions from data that may be obtained from more timely experiments at elevated temperatures.

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