Role of minerals in the thermal alteration of organic matter. I - Generation of gases and condensates under dry condition

Details Role of minerals in the thermal alteration of organic matter. I - Generation of gases and condensates under dry condition Role of minerals in the thermal alteration of organic matter. I - Generation of gases and condensates under dry condition

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49.2589t&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 49, Dec. 1985, p. 2589-2604.

Physics

3

Condensates, Gas Evolution, Geochemistry, Minerals, Organic Materials, Pyrolysis, Catalytic Activity, Monterey Bay (Ca), Planetary Evolution, Reaction Kinetics, Tables (Data)

Scientific paper

Pyrolysis experiments conducted at 200 and 300 C on kerogen and bitumen from the Monterey formation and on the Green River Formation kerogen with montmorillonite, illite, and calcite added are described. The pyrolysis products are identified and gas and condensate analyses are performed. A catalytic effect is detected in the pyrolysis of kerogen with montmorillonite; however, illite and calcite display no catalytic activity. The increased production of C1-C6 hydrocarbons and the dominance of branched hydrocarbons in the C4-C6 range reveals a catalytic influence. It is observed that the catalysis of montmorillonite is greater during bitumen pyrolysis than for kerogen, and catalysis with minerals affects the production of CO2. It is concluded that a mineral matrix is important in determining the type and amount of gases and condensates forming from organic matter under thermal stress.

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