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The high temperature pyrolysis of ethylbenzene
Author(s) -
Pamidimukkala K. M.,
Kern R. D.
Publication year - 1986
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550181206
Subject(s) - homolysis , chemistry , ethylbenzene , pyrolysis , atmospheric temperature range , dissociation (chemistry) , mass spectrometry , thermal decomposition , bond cleavage , kinetic energy , decomposition , analytical chemistry (journal) , radical , thermodynamics , organic chemistry , chromatography , benzene , catalysis , physics , quantum mechanics
The thermal decomposition of ethylbenzene has been investigated behind reflected shock waves over the temperature and pressure ranges of 1350–2080 K and 0.25–0.5 atm using a 1.6% C 8 H 10 Ne mixture. Major products of the pyrolysis are C 7 H 8 , C 7 H 7 , C 6 H 6 , C 4 H 2 , C 2 H 4 , C 2 H 2 , and CH 4 ; C 8 H 8 appears throughout the temperature range as a minor product. Comparison of the product profiles obtained by time‐of‐flight mass spectrometry and the results of model calculations strongly supports the initiation step of β CC bond homolysis for C 8 H 10 dissociation. A 51 kinetic step reaction mechanism with 24 species was formulated to model the temperature and time dependence of the major products observed in our experiments.