Nitrogen Distribution in the Pyrolysis Products of a Type II Kerogen (Cenomanian, Italy). Timing of Molecular Nitrogen Production versus Other Gases
- Creators
- Behar, F.
- Gillaizeau, B.
- Derenne, S.
- Largeau, C.
Abstract
A type II kerogen (NN8, Cenomanian, Italy) was submitted to isothermal closed pyrolyses, in sealed gold tubes, under various temperature/time conditions (ranging from 280 to 550 °C and from 1 to 72 h). Nitrogen distributions were determined, via independent measurements, in the different pyrolysis fractions. Complete nitrogen mass balances were thus obtained, for the first time to the best of our knowledge, for pyrolyses of a type II kerogen. The nature and the abundance of the individual gases generated under each temperature/time condition were also examined. Taken together the above results provided information on (i) the amounts of N_2, CH_4, CO_2, and H_2S produced from the NN8 kerogen upon thermal stress, (ii) the timing of such productions, and (iii) the composition to be expected for the gas fractions generated from such a type II kerogen at different stages of natural maturation. In addition, these observations were compared with those derived from a similar study recently carried out on a type I kerogen.
Additional Information
© 2000 American Chemical Society. Received 20 July 1999. Published online 20 January 2000. Published in print 1 March 2000. The authors thank T. Lesage for technical assistance. We also acknowledge Drs. J. Connan (Elf Aquitaine), J. L. Oudin (Total), and B. Beaudoin (Ecole des Mines de Paris) for financial support to B.G.Additional details
- Eprint ID
- 75169
- DOI
- 10.1021/ef990157g
- Resolver ID
- CaltechAUTHORS:20170316-070034315
- Ecole des Mines de Paris
- Created
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2017-03-16Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field