Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 12, Issue 41, Pages 13511-13514Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0cp00918k
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Funding
- NERC [ncas10006] Funding Source: UKRI
- Natural Environment Research Council [ncas10006] Funding Source: researchfish
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The rate coefficients (k) for reactions of OH with acetone, methyl ethyl ketone (MEK) and dimethyl ether (DME) have been measured in the temperature range 86-112 K using a pulsed Laval nozzle apparatus. Large increases in k at lower temperatures were observed, with k(86K)/k(295K) = 334 for acetone, and k(93K)/k(295K) = 72 and 3, for MEK and DME respectively. A mechanism involving the formation of a hydrogen bonded complex prior to an overall barrier on the potential energy surface is proposed to explain this behaviour.
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