The nature of hydrocarbon synthesis by means of hydrogenation of carbon monoxide on iron-based catalysts: Part II. dynamic adsorption/desorption equilibria

R. Snel

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5 Citations (Scopus)


Results from alkene co-feeding and benzene poisoning experiments indicate that readsorption and secondary reaction of initially produced alkenes is an important pathway leading to the formation of long-chain hydrocarbons during Fischer-Tropsch synthesis. Synthesis sites are differentiated in short-chain and long-chain synthesis sites. Synthesis initiation by readsorbed alkenes on long-chain synthesis sites is favoured by increased reaction pressure and leads to the formation of predominantly long-chain hydrocarbons. When this type of synthesis becomes more pronounced, inflection points are observed in Anderson-Schulz-Flory plots of the product distribution. Secondary reactions are found to be very dependent on dynamic adsorption/desorption equilibria. An example of a mechanism which is consistent with the experimental observations is presented.
Original languageUndefined
Pages (from-to)143-154
JournalJournal of molecular catalysis
Issue number1
Publication statusPublished - 1989
Externally publishedYes


  • IR-70450

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