A chemical kinetic study of n-butanol oxidation at elevated pressure in a jet stirred reactor

P. Dagaut, Subram Sarathy, M. J. Thomson

Research output: Contribution to journalConference articlepeer-review

192 Scopus citations

Abstract

Biofuels are attractive alternatives to petroleum derived transportation fuels. n-Butanol, or biobutanol, is one alternative biofuel that can replace gasoline and diesel in transportation applications. Similar to ethanol, n-butanol can be produced via the fermentation of sugars, starches, and lignocelluloses obtained from agricultural feedstocks. n-Butanol has several advantages over ethanol, but the detailed combustion characteristics are not well understood. This paper studies the oxidation of n-butanol in a jet stirred reactor at 10 atm and a range of equivalence ratios. The profiles for CO, CO 2 , H 2 O, H 2 , C 1 -C 4 hydrocarbons, and C 1 -C 4 oxygenated compounds are presented herein. High levels of carbon monoxide, carbon dioxide, water, hydrogen, methane, formaldehyde, ethylene, and propene are detected. The experimental data are used to validate a novel detailed chemical kinetic mechanism for n-butanol oxidation. The proposed mechanism well predicts the concentration of major product species at all temperatures and equivalence ratios studied. Insights into the prediction of other species are presented herein. The proposed mechanism indicates that n-butanol consumption is dominated by H-atom abstraction from the α, β, and γ carbon atoms. A sensitivity analysis is also presented to show the effects of reaction kinetics on the concentration of several poorly predicted species.

Original languageEnglish (US)
Pages (from-to)229-237
Number of pages9
JournalProceedings of the Combustion Institute
Volume32 I
DOIs
StatePublished - Jan 1 2009
Event32nd International Symposium on Combustion - Montreal, QC, Canada
Duration: Aug 3 2008Aug 8 2008

Keywords

  • 1-Butanol
  • Jet stirred reactor
  • Kinetic modeling
  • Reaction mechanism
  • n-Butanol

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

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