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Very low-pressure pyrolysis. IX. The decomposition of azoethane, azoisopropane, and 2,2′-azoisobutane

✍ Scribed by Michael J. Perona; Peter C. Beadle; David M. Golden

Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
657 KB
Volume
5
Category
Article
ISSN
0538-8066

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✦ Synopsis

Abstract

The very low‐pressure (VLPP) technique was used to study the pyrolysis of azoethane (AE), azoisopropane (AIP), and 2,2′‐azoisobutane (AIB). The low pressure rate constants were related to the high‐pressure Arrhenius parameters by means of the RRKM theory. This procedure in itself does not yield an unambiguous set of parameters. However, thermochemical and kinetic arguments are given which support the following values of log k∞ for the pyrolysis of AE, AIP, and AIB, respectively: 16.4–49.7/θ 16.6–47.9/θ, and 16.4–42.8/θ, where θ = 2.303__RT__ in kcal/mole. The flow dependence of k~uni~ was used to estimate the collisional efficiencies of the azo compounds relative to the wall.

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