APPLICATION OF INFRARED-SPECTROSCOPY TO THE CLASSIFICATION OF KEROGENTYPES AND THE THERMOGRAVIMETRICALLY DERIVED PYROLYSIS KINETICS OF OILSHALES

In this study, the kerogen types of Goynuk, Beypazari oil shale from T urkey and Timahdit oil shale from Morocco were defined by infrared spe ctroscopy. Aliphatic, carboxyl/carbonyl and aromatic compounds were co nsidered in order to classify the kerogen types. The IR-analysis resul t shows that the samples can be classified in kerogen evaluation path I for Goynuk. Timahdit oil shales and path II for Beypazari oil shale. The kinetics of thermal decomposition of Goynuk Beypazari and Timahdi t oil shales have been studied by non-isothermal thermogravimetry (TG) . The weight loss data have been analyzed by Coats-Redfern and Chen-Nu ttall combinations. The kinetic parameters for the decomposition of th e samples were determined and discussed.