Migration pathways of oxygen and the formation of oxygenated intermediates in oxygenated fuel combustion

Li Zhi Zhang, Jian Gao, Dai Qing Zhao*, Li Qiao Jiang, Jiu Zhong Yang, Zhandong Wang, Han Feng Jin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The combustion of oxygenated fuel produces more non-regulated pollutants which usually contain oxygen such as aldehydes than the combustion of hydrocarbon fuel. The formation of these oxygenated intermediates may be associated with the release of oxygen from the oxygenated fuel. In this paper, migration pathways of oxygen from several oxygenated fuels were investigated to obtain the formation characteristics of oxygenated intermediates. Major oxygenated intermediates and other intermediates were identified using synchrotron vacuum ultraviolet photoionization mass spectrometry in a dimethyl ether flame, an ethanol flame, and a propane flame. Their mole fractions were also evaluated. The results indicate that the oxygen from oxygenated fuel leads to an easier production of oxygenated intermediates, compared with oxygen from the oxidizer. The major oxygenated intermediate depends on the structure of the oxygenated fuel and was found to be formaldehyde in the dimethyl ether flame, and acetaldehyde in the ethanol flame. However, formaldehyde and acetaldehyde are present in low concentrations while hydrocarbon intermediates, such as ethene, ethyne, and propene, are present in high concentrations in the propane flame.

Original languageEnglish (US)
Pages (from-to)1809-1815
Number of pages7
JournalWuli Huaxue Xuebao/ Acta Physico - Chimica Sinica
Volume27
Issue number8
StatePublished - Aug 1 2011

Keywords

  • Migration pathway
  • Non-regulated pollutant
  • Oxygen from oxygenated fuel
  • Oxygenated fuel
  • Synchrotron photoionization

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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