Observation of a large negative temperature dependence for rate coefficients of reactions of OH with oxygenated volatile organic compounds studied at 86–112 K

文献情報

出版日 2010-09-22

DOI 10.1039/C0CP00918K

インパクトファクター 3.676

著者

Robin J. Shannon, Sally Taylor, Andrew Goddard, Mark A. Blitz, Dwayne E. Heard

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要旨

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 k86K/k295K = 334 for acetone, and k93K/k295K = 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.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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