A comprehensive combustion chemistry study of n-propylcyclohexane

Ahfaz Ahmed, Julius A. Corrubia, Moaz Al-lehaibi, Farinaz Farid, Heng Wang, Zhandong Wang, Bingjie Chen, William L. Roberts, David L. Miller, Aamir Farooq, Nicholas P. Cernansky, Mani Sarathy

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Alkylated cycloalkanes are vital components in gasoline, aviation, and diesel fuels; however, their combustion chemistry has been less investigated compared to other hydrocarbon classes. In this work, the combustion kinetics of n-propylcyclohexane (n-Pch) was studied across a range of experiments including pressurized flow reactor (PFR), jet stirred reactor (JSR), shock tube (ST), and rapid compression machine (RCM). These experiments cover a wide range of conditions spanning low to intermediate to high temperatures, low to high pressures at lean to rich equivalence ratios. Stable intermediate species were measured in PFR over a temperature range of 550–850 K, pressure of 8.0 bar, equivalence ratio (ϕ) of 0.27, and constant residence time of 120 ms. The JSR was utilized to measure the speciation during oxidation of n-Pch at ϕ of 0.5–2.0, at atmospheric pressure, and across temperature range of 550–800 K. Ignition delay times (IDTs) for n-Pch were measured in the RCM and ST at temperatures ranging from 650 to 1200 K, at pressures of 20 and 40 bar, at ϕ = 0.5, 1.0. In addition, a comprehensive detailed chemical kinetic model was developed and validated against the measured experimental data. The new kinetic model, coupled with the breadth of data from various experiments, provides an improved understanding of n-Pch combustion.
Original languageEnglish (US)
Pages (from-to)111576
JournalCombustion and Flame
StatePublished - Jul 11 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-07-13
Acknowledgements: The work at King Abdullah University of Science and Technology (KAUST) was supported by the KAUST Clean Fuels Consortium (KCFC) and its member companies.
The investigations at Drexel University were based upon work supported by the US Air Force Office of Scientific Research under Grant No. FA9550–08–1–0040 (AFRL Energy IPT – Phase I) and Grant No. FA9550–11–1–0217 (AFRL Energy IPT – Phase II), and by Drexel University.

ASJC Scopus subject areas

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


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