On the chemical mechanism of kerogen thermal transformation. Study of the transformation of sporopollenin
Identifieur interne : 001720 ( Main/Exploration ); précédent : 001719; suivant : 001721On the chemical mechanism of kerogen thermal transformation. Study of the transformation of sporopollenin
Auteurs : M. A. Bestougeff [France] ; R. J. Byramjee [France] ; B. Pesneau [France]Source :
- Organic Geochemistry [ 0146-6380 ] ; 1985.
Abstract
Experiments were carried out on the thermal decomposition of sporopollenin, isolated from a marine algae (Lycopodium clavatum) at constant temperature (380°C) and pressure (around 200 atm), but for varying pyrolysis times.The decomposition products were separated into groups, analysed by chromatography and infra-red spectroscopy, and their elemental composition determined. The thermal evolution of sporopollenin proceeds in three distinct steps: first, a partial decomposition of the initial substance occurs with the formation of soluble materials. This is followed by a full decomposition of the sporopollenin and disappearance of the non-soluble residue. Finally, a non-soluble material reappears. It is proposed that, due to secondary reactions, the evolution of kerogen of the sapropelic type is similar to what has been observed in mild pyrolysis experiments.
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DOI: 10.1016/0146-6380(85)90017-8
Affiliations:
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The thermal evolution of sporopollenin proceeds in three distinct steps: first, a partial decomposition of the initial substance occurs with the formation of soluble materials. This is followed by a full decomposition of the sporopollenin and disappearance of the non-soluble residue. Finally, a non-soluble material reappears. It is proposed that, due to secondary reactions, the evolution of kerogen of the sapropelic type is similar to what has been observed in mild pyrolysis experiments.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Paris</li></settlement></list><tree><country name="France"><region name="Île-de-France"><name sortKey="Bestougeff, M A" sort="Bestougeff, M A" uniqKey="Bestougeff M" first="M. A." last="Bestougeff">M. A. Bestougeff</name></region><name sortKey="Byramjee, R J" sort="Byramjee, R J" uniqKey="Byramjee R" first="R. J." last="Byramjee">R. J. 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