The kerogen vanadyl porphyrins: Incorporation during catagenesis

Abstract

Natural vanadyl (VO 2+)-deoxophylloerythroetioporphyrins (DPEP) have been shown to be capable of reacting and quantitatively incorporating into immature kerogen model materials (torbanite, lignites, subbituminous coal and immature lacustrine kerogen) at 200?C for 72 h in the absence/presence of air. Electron spin resonance was used to monitor the incorporation of VO 2+-DPEP into the kerogen models. The products of the incorporation resemble natural kerogen enriched withVO 2+ . The simulation experiments described in this paper clearly show that the kerogen VO 2+-P may originate from VO 2+-DPEPincorporation into the kerogen macromolecular structures during catagenesis.