Asphaltene Reaction Pathways. 2. Pyrolysis of n-Pentadecylbenzene

Phillip E. Savage, Michael T. Klein

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The reactions, pathways, kinetics, and mechanisms of alkyl-aromatic moieties likely present in asphaltenes were probed via the thermolysis of n-pentadecylbenzene (PDB) at temperatures from 375 to 450 °C. The primary reaction pathway led to two major product pairs, toluene plus 1-tetradecene and styrene plus n-tridecane, respectively. A complete series of n-alkanes, a-olefins, phenylalkanes, and phenylolefins was also formed in lesser yields. PDB thermolysis was demonstrably first-order, and associated Arrhenius parameters of [E* (kcal/mol), log A (s-1)] = [55.45,14.04] were determined. Reaction in tetralin-d12indicated that the operative PDB thermolysis mechanism was entirely free-radical. This information permitted speculation into the relevance of the model-compound results to asphaltene reactions.

Original languageEnglish (US)
Pages (from-to)488-494
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Issue number3
StatePublished - Mar 1 1987

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering


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