Predictor-corrector numerical methods for kinetic analysis of TG data: methods applied to oil shale pyrolysis

A Kinetic Approach to the Temperature-Programmed Pyrolysis of Turkish Oil Shales in a Fixed Bed Reactor: Determination of Kinetic Parameters for n-Paraffins and 1-Olefins Evolution

“…Thermal breakdown of kerogen in oil shale embodies three broad classes of reaction. These are decarboxylation reactions (involving principally the decomposition of −COOH groups), major breakdown of kerogen to form oil and gas, with hydrocarbons as the main products and carbonization of the aromatic char . Previous investigations have led to the conclusion that the pyrolysis of oil shale kerogen could be explained as The formation of intermediate bitumen is a considerably more rapid step compared to the decomposition of bitumen at temperatures below 482 °C , and 487 °C. , The first reaction can be omitted from the present investigation since this covers a temperature range of 265 to 400 °C.…”

Effect of solvent swelling on pyrolysis of kerogen (type-I) isolated from Göynük oil shale (Turkey)

“…A commonly accepted model of kerogen is that of a polymeric material composed of non-repeating polynuclear aromatics units with peripheral and bridging functional groups. The principal functional groups are alkyl and alkyl/aryl chain substituent and carboxylic groups [1]. Kerogens are insoluble in organic solvents and solvent swelling techniques extensively used in the study of polymer structure can and have been used to investigate the macromolecular network properties of kerogen structure of oil shale [2,3].…”

Classification of Aliphatic Hydrocarbons Formed at Temperature-Programmed Co-Pyrolysis of Turkish Oil Shales of Kerogen Types I and Ii

“…This kerogen originates mainly from marine or lacustrine organic material and has therefore a high H/C ratio accounting for high hydrocarbon yield. Type II kerogen contains the components of terrestrial as well as of marine material [4][5][6][7], its H/C ratio is lower and O/C ratio slightly higher compared to type I. Type III kerogen is mainly terrestrial in origin with higher O/C and lower H/C ratios than those of other types, reflecting increasing proportions of polycyclic aromatics and oxygen-containing aromatic groups.…”

“…A commonly accepted model of kerogen structure is that of a polymeric material composed of non-repeating polynuclear aromatic units with peripheral and bridging functional groups. Alkyl and alkyl/aryl chain substituents and carboxylic groups are the principal functional groups [6]. Alginite is the predominant organic matter in kerogen type I.…”