Physics
Scientific paper
Sep 1970
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970gecoa..34..965g&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 34, Issue 9, pp.965-979
Physics
9
Scientific paper
The possible abiotic synthesis of the aliphatic hydrocarbons in extraterrestrial samples was investigated, using as a model, the Fischer-Tropsch reaction between hydrogen and carbon monoxide. Iron of meteoritic origin, as well as commercial nickel and nickel-iron alloys, were used as the catalyst. This type of synthesis produced small amounts of saturated and unsaturated hydrocarbons ranging from C 8 to about C 26 . The saturated hydrocarbons were found to be predominantly n-paraffins plus smaller amounts of methyl branched isomers (7-, 6-, 5-, 4-, 3-, 2-methyl alkanes). The individual concentrations of these synthetic hydrocarbons decrease continuously with molecular weight. Although n-alkanes and their monomethyl branched isomers have been detected by gas chromatographic-mass spectrometric techniques among the products of more than 60 experiments, no traces of isoprenoid hydrocarbons were found.
Gelpi E.
Han Junsheng
Nooner D. W.
Oro Judit
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