A fugacity based kinetic model for supercritical fischer -tropsch synthesis over cobalt-based catalytic systems

Aswani Kumar Mogalicherla, Elfatih E. Elmalik, Nimir O. Elbashir

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A kinetic model for Fischer-Tropsch synthesis (FTS) in both conventional reaction media (gas-phase) and non-conventional media (near-critical and supercritical solvent media) was derived from experimental data generated from a commercial alumina supported cobalt catalyst (15% Co/Al2O 3). The model was developed based on partial pressures assuming ideal gas phase as well as based on fugacity coefficients to account for the non-ideality in the near critical and supercritical phase. The estimated kinetics parameters from the fugacity-based model were compared to the kinetics parameters obtained from the ideal gas assumption using the partial pressure based kinetic model. Similarly, the fugacity-based model successfully predict the methane formation rates for gas phase as well as near critical and supercritical phase FTS. It was observed that the fugacity-based models more accurately predicted the carbon monoxide consumption rate in gas-phase as well as near critical and supercritical FTS conditions. Our qualitative conclusion is that fugacity-based model will also do a better job than the partial pressure based model in predicting the chain growth probability of the cobalt catalyst since it can better account for the non-ideality of the reaction in the gas-phase FTS (high pressures operation) and in the near-critical and supercritical phase.

Original languageEnglish
Title of host publication10AIChE - 2010 AIChE Annual Meeting, Conference Proceedings
Publication statusPublished - 1 Dec 2010
Event2010 AIChE Annual Meeting, 10AIChE - Salt Lake City, UT, United States
Duration: 7 Nov 201012 Nov 2010

Publication series

NameAIChE Annual Meeting, Conference Proceedings

Other

Other2010 AIChE Annual Meeting, 10AIChE
CountryUnited States
CitySalt Lake City, UT
Period7/11/1012/11/10

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ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Mogalicherla, A. K., Elmalik, E. E., & Elbashir, N. O. (2010). A fugacity based kinetic model for supercritical fischer -tropsch synthesis over cobalt-based catalytic systems. In 10AIChE - 2010 AIChE Annual Meeting, Conference Proceedings (AIChE Annual Meeting, Conference Proceedings).