Study of the effect of methanol on the fuel-rich premixed laminar flame of n-heptane

Han Jun Xu*, Chun De Yao, Guang Lan Xu, Zhan Dong Wang, Hanfeng Jin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


An experimental study of the fuel-rich low pressure premixed laminar n-heptane/methanol/oxygen/argon flame was performed with the tunable synchrotron vacuum ultra-violet (VUV) pho-toionization and mass spectrometry. A literature n-heptane flame was adopted in the comparative study of the species include benzene and its precursors. The results show that, the addition of methanol can promote the combustion process, the maximum mole fraction of most of species is decreased, and the mole fraction profiles shift toward the burner surface. However, as the dehy-drogenation and dissociation reactions go further, the species in the down stream of reaction path are less affected by methanol addition. The C 4 precursors of benzene are more sensitive to the addition of methanol compared with the C 3 precursors. Finally, the rate of production (ROP) analysis shows that the formation path of benzene is attributed to be C 4+C 2 rather than C 3+C 3 in these flames.

Original languageEnglish (US)
Pages (from-to)1803-1806
Number of pages4
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Issue number10
StatePublished - Oct 2012
Externally publishedYes


  • Low pressure premixed laminar flame
  • Methanol
  • N-heptane
  • Synchrotron radiation

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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