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The reaction of atomic oxygen O(3P) with isobutane

✍ Scribed by Steven P. Jewell; Kenneth A. Holbrook; Geoffrey A. Oldershaw

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 330 KB
Volume: 14
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550140513

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✦ Synopsis

Abstract

The reaction of O(^3^P) atoms with isobutane has been studied by using the discharge‐flow system described previously [1]. The rate constant was measured from determinations of the isobutane concentration in the presence of an excess of O atoms and is given by k~1~ = (7.9 ± 1.4) × 10^7^ dm^3^/mol·s at 307 K. In order to explain the observed reaction products, the mechanism requires that the principal process be the successive abstraction of H atoms from isobutane and from the t‐butyl radical to give isobutene. A minor part of the reaction between O(^3^P) and the t‐butyl radical gives the t‐butoxy radical, which decomposes to acetone. The branching ratios are
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