100.石炭の低温での酸素による酸化反応の解析

抄録

Examination of the mechanism of low temperature oxidation of coal is important for understanding spontaneous combustion and/or weathering of coal. In this study the change of functional groups, gas formation rates and weight change during the oxidation were measured continuously by using an in-situ FTIR spectrometer, a mass spectrometer and a thermogravimetric analyzer, respectively. From these measurements, it was found that aliphatic groups were first oxidized to form aldehydes. Then the aldehydes are oxidized to form carboxylic groups and esters. Anhydrides are also formed from the carboxylic groups and the aldehydes. A large amount of water is formed simultaneously during the course of these reactions. Formulation of the oxidation rate was intended based on the measurements and the presumed mechanism.