Isomer Distribution in Hydrocarbons from the Fischerhyphen;Tropsch Process

摘要

The isomer distribution experimentally found for the saturated‐hydrocarbon products (pentane to octane range) from a cobalt Fischer‐Tropsch catalyst have been deduced from probability considerations. With certain restrictions, it is assumed that the carbon skeleton is built up by addition to any terminal carbon atom (for which thea prioriprobability has a constant valuea) or to any penultimate carbon atom (witha prioriprobabilityb). Values ofaandb,determined from experimental data, led to deduced isomer concentrations in each molecular‐weight cut agreeing with experimental concentrations with an average deviation of 0.7 percent. Peculiarities in the observed isomer distribution were also reproduced.