Journal
JOURNAL OF CATALYSIS
Volume 287, Issue -, Pages 1-4Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2011.12.009
Keywords
Kinetics; Initiation; Oxidation; Radicals; Mechanism
Categories
Funding
- ETH Zurich
- Swiss National Science Foundation (SNSF)
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The aerobic autoxidation of hydrocarbons proceeds through a complicated reaction mechanism, mediated by free radicals. Most reported autoxidation catalysts enhance the radical formation rate via homolytic activation of hydroperoxide products. Whereas our knowledge of the product formation mechanisms has significantly improved over the last couple of years, the chain-initiation is still poorly understood. In this contribution, the thermal and catalytic initiation rate for the oxidation of the renewable olefin a-pinene is quantified, thereby providing evidence for a substrate-assisted thermal initiation. The kinetics of the catalytic initiation is in good agreement with previous studies under model conditions. (C) 2011 Elsevier Inc. All rights reserved.
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