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The homogeneous pyrolysis of 2‐butenes
Author(s) -
Jeffers Peter,
Bauer S. H.
Publication year - 1974
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.550060512
Subject(s) - chemistry , homogeneous , isomerization , pyrolysis , limiting , methane , butene , atmospheric temperature range , thermodynamics , photochemistry , organic chemistry , catalysis , ethylene , mechanical engineering , physics , engineering
The homogeneous pyrolysis of 2‐butene subjected to shock heating was studied in the limit of high pressures by a relative rate technique. Over the temperature range of 1150–1325°K nearly equal amounts of methane, propylene, and butadiene were formed starting with either the cis‐ or trans ‐2‐butene, while isomerization remained far from equilibrium. The results are consistent with a simple free radical mechanism for which we find\documentclass{article}\pagestyle{empty}\begin{document}$$ k^\infty [{\rm C}_4 {\rm H}_8 \mathop \rightarrow\limits_{cis} {\rm CH}_3 + {\rm C}_3{\rm H}_5] = 10^{16} \exp (-80,000/RT)\sec^{-1} $$\end{document} as the initial rate‐limiting step.