Partial thermal analysis of kerogen oxidation products

A method is proposed which, in principle, permits resolution of complex TG curves into elementary curves. The method is based on appropriate preheating of the substrate. In fact, the method represents partial differential thermogravimetric analysis (PDTG). In this paper it was used, together with IR spectroscopy, for analysis of the precipitated acids obtained by partial oxidation of the kerogen from an oil shale. The precipitated acids were found to consist of five components, characterized by similar thermal properties. General qualitative and quantitative characteristics of the individual components are suggested.