Experimental study of the effect of methanol on the n-heptane premixed laminar flame

Han Jun Xu*, Chun De Yao, Guang Lan Xu, Xiang Lan Yang, Jiu Zhong Yang, Zhan Dong Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


An experimental study of the low pressure premixed laminar methanol/n-heptane/oxygen/ argon flame with the methanol mole fraction blend ratio of 0%, 11%, 28%, 50% was performed with the tunable synchrotron vacuum ultra-violet (VUV) photoionization and molecular-beam sampling mass spectrometry. 62 kinds of combustion intermediates and final products were detected as well as their mole fractions. The results show that the consumption rate of n-heptane and the dissociation of large molecular are not impacted by the methanol addition, the effect of methanol behaviors at the small C1 and C2 moleculars. The oxidation rate of methanol is larger than that of n-heptane, so with the methanol addition increase, the overall reaction rate increases. At the same time the equivalent concentrations of methyl, acetylene, ethyl, ethane and ketene decrease with the increase of methanol but formaldehyde and acetaldehyde increase. The experiment provides the valuable data for the validation of mechanism in the future.

Original languageEnglish (US)
Pages (from-to)715-719
Number of pages5
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Issue number4
StatePublished - Apr 2011
Externally publishedYes


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

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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