Investigation of 2,5-dimethyl furan and iso-octane ignition

Mazen A. Eldeeb, Benjamin Akih-Kumgeh

Research output: Contribution to journalArticlepeer-review

49 Scopus citations


The ignition behavior of 2,5-dimethyl furan (2,5-DMF), iso-octane, and their blends is investigated. To confirm that 2,5-DMF is the least reactive furan, its ignition behavior is compared with that of the isomer, 2-ethyl furan (2-EF), revealing the very high reactivity of 2-EF. For the 2,5-DMF/. iso-octane comparative study, ignition delay times are measured over a temperature range from 1009 to 1392. K and pressures up to 12. atm for lean, stoichiometric, and rich mixtures of fuel, oxygen, and argon. It is observed that 2,5-DMF generally has longer ignition delay times than iso-octane when the equivalence ratio ϕ, the argon-to-oxygen ratio D, and pressure p are kept constant over a range of temperatures, T. Further, ignition delay times of a 2,5-DMF/. iso-octane 50% blend (by liquid volume) are measured and compared to those of the pure fuels at stoichiometric and rich conditions and pressure of 12. atm. The blend shows intermediate reactivity between the pure fuels, albeit in closer alignment with iso-octane than 2,5-DMF. A combined model for 2,5-DMF and iso-octane combustion is developed, drawing from recent literature models for the pure components. Further modifications are carried out to improve agreement with the current and previous ignition data. The resulting model captures the ignition trends of the pure and blended fuels. Reaction pathway analysis and species sensitivity analysis are performed for more insight on the governing chemical kinetics. The reported experimental data set and the model advance combustion modeling of bio and conventional fuel blends for spark ignition engines.

Original languageEnglish (US)
Pages (from-to)2454-2465
Number of pages12
JournalCombustion and Flame
Issue number6
StatePublished - Jun 1 2015


  • 2,5-Dimethyl furan
  • 2-Ethyl furan
  • Biofuel ignition
  • Chemical kinetic modeling
  • Fuel blends
  • Iso-Octane

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology
  • General Physics and Astronomy


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