Newly identified products of benzene droplet combustion: Polycyclic aromatic hydrocarbons of three to ten rings

Nathan D. Marsh, Elmer B. Ledesma, Mary J. Wornat, Meng P. Tan, Delin Zhu, Chung King Law

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

In order to investigate further the polycyclic aromatic hydrocarbons (PAH) produced by benzene droplet combustion, we have obtained and analyzed a highly-concentrated benzene droplet combustion sample, using high pressure liquid chromatography (HPLC) with diode-array ultraviolet-visible (UV) absorbance spectroscopy. In addition to benzo[k]fluoranthene, we have identified ten large (5- to 10-ring) PAH never before reported as products of benzene pyrolysis or combustion: dibenz[a,c]anthracene, indeno[1,2,3-cd]fluoranthene, anthanthrene, cyclopenta[cd]benzo[ghi]perylene, coronene, dibenzo[a,i]pyrene, cyclopenta[bc]coronene, benzo[a]coronene, naphtho[8,1,2-abc]coronene, and ovalene. In this sample we have also identified three smaller PAH, benz[f]indene, 2-ethynylanthracene, and benzo[c]phenanthrene, never before reported as products of benzene pyrolysis or combustion. In order to document the unequivocal identification of these compounds as benzene droplet combustion products, we present the UV absorbance spectrum of each newly identified benzene product, along with the matching UV spectrum of the respective PAH reference standard. Several of the identifications have required the acquisition of specially synthesized reference standards. Combined with our previous results, the present findings show that 50 individual PAH (and related compounds), of up to 10 rings in size, are produced during benzene droplet combustion.

Original languageEnglish (US)
Pages (from-to)227-244
Number of pages18
JournalPolycyclic Aromatic Compounds
Volume25
Issue number3
DOIs
StatePublished - Jun 1 2005

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Keywords

  • Benzene products
  • Combustion
  • Cyclopenta-fused PAH
  • Pyrolysis
  • UV spectra

Fingerprint Dive into the research topics of 'Newly identified products of benzene droplet combustion: Polycyclic aromatic hydrocarbons of three to ten rings'. Together they form a unique fingerprint.

  • Cite this