Kinetics of the Fischer-Tropsch synthesis

Ravindra S. Dixit, Lawrence L Tavlarides

Research output: Contribution to journalArticle

39 Scopus citations


The kinetics of the Fischer-Tropsch synthesis reactions are studied in an internally recycled reactor over a commercial 0.5% Ru/γ-Al2O3 catalyst. Steady-state turnover numbers are obtained for 3:1 and 2:1 H2/CO feed gas over a temperature range of 200-300°C, a pressure range of 0.6-1.0 MPa, and a weight hourly space velocity range of 0.1-0.5 h-1. Intrinsic kinetic data are obtained on surface-impregnated catalyst. It is shown that even at the highest conversion levels, heat and mass transfer resistances are negligible. A mechanism for the Fischer-Tropsch synthesis is proposed and several kinetic models are developed. The kinetic model which best fit the experimental data is given by N CO = [2.53e-10.4/RTp COp H2]/[(1 + 0.0782pCO)2] s-1. This model is based on the assumption that the rate-determining step is the hydrogenation of adsorbed CHx species. The product selectivity and CO conversion are strongly influenced by temperature.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalIndustrial and Engineering Chemistry Process Design and Development
Issue number1
StatePublished - 1983
Externally publishedYes


ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Engineering(all)
  • Environmental Science(all)
  • Polymers and Plastics

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