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Low-Mr hydrocarbons generated during hydrous and dry pyrolysis of kerogen

Nature volume 317, pages 708–709 (1985)Cite this article

Abstract

The validity of applying laboratory pyrolysis experiments to simulating the maturation of organic matter in sedimentary basins has been vigorously debated19. We report here results from the generation of hydrocarbons of low relative molecular mass (Mr) in both hydrous and dry pyrolysis. A principal difference is that under dry conditions in the presence of montmorillonite, catalysis occurs with respect to generation of low-Mr hydrocarbons10 but no such effect is evident for hydrous conditions, probably because of a reduction in the clay's acidity. In addition, olefins which were previously reported as not being present in the products of hydrous pyrolyses4,6,11 were found to be produced in the C2–C6 range in comparable amounts under both hydrous and dry pyrolyses at 300 °C and may form in the course of kerogen catagenesis in nature but disappear with geologic time due to their instability. These studies have relevance to understanding the interactions between kerogen and minerals in sedimentary rocks and to processes in the formation of natural gas.

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Author notes

  1. Eli Tannenbaum

    Present address: Schlumberger Anadrill, 200 Macco Blvd, Sugar Land, Texas, 77478, USA

Authors and Affiliations

  1. Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, California, 90024, USA

    Eli Tannenbaum & Isaac R. Kaplan

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  1. Eli Tannenbaum
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  2. Isaac R. Kaplan
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Tannenbaum, E., Kaplan, I. Low-Mr hydrocarbons generated during hydrous and dry pyrolysis of kerogen. Nature 317, 708–709 (1985). https://doi.org/10.1038/317708a0

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