Pyrolysis Kinetics for Long-Chain n-Alkylbenzenes: Experimental and Mechanistic Modeling Results

Phillip E. Savage, David J. Korotney

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

We developed a reaction model for the pyrolysis of long-chain n-alkylbenzenes in order to determine the influence of the alkyl chain length on the pyrolysis kinetics. The model, which has as its basis the previously deduced free-radical reaction mechanism for alkylbenzene pyrolysis, incorporates the effect of the alkyl chain length on the reaction path degeneracy for the hydrogen-abstraction steps. The kinetics predicted by the reaction model for pyrolyses at 400 °C and an initial reactant concentration of 1.3 M were in good accord with experimentally determined pseudo-first-order rate constants for seven different n-alkylbenzenes having aliphatic substituents ranging from butyl (C4) to pentadecyl (C15).

Original languageEnglish (US)
Pages (from-to)499-502
Number of pages4
JournalIndustrial and Engineering Chemistry Research
Volume29
Issue number3
DOIs
StatePublished - Jan 1 1990

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Pyrolysis
Kinetics
Chain length
Free radical reactions
Hydrogen
Rate constants

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "We developed a reaction model for the pyrolysis of long-chain n-alkylbenzenes in order to determine the influence of the alkyl chain length on the pyrolysis kinetics. The model, which has as its basis the previously deduced free-radical reaction mechanism for alkylbenzene pyrolysis, incorporates the effect of the alkyl chain length on the reaction path degeneracy for the hydrogen-abstraction steps. The kinetics predicted by the reaction model for pyrolyses at 400 °C and an initial reactant concentration of 1.3 M were in good accord with experimentally determined pseudo-first-order rate constants for seven different n-alkylbenzenes having aliphatic substituents ranging from butyl (C4) to pentadecyl (C15).",
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Pyrolysis Kinetics for Long-Chain n-Alkylbenzenes : Experimental and Mechanistic Modeling Results. / Savage, Phillip E.; Korotney, David J.

In: Industrial and Engineering Chemistry Research, Vol. 29, No. 3, 01.01.1990, p. 499-502.

Research output: Contribution to journalArticle

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