Rate constants for the gas‐phase reactions of chlorine atoms with a series of ketones

Notario, A.; Mellouki, A.; Bras, G. Le

doi:10.1002/(sici)1097-4601(2000)32:1<62::aid-jck7>3.3.co;2-v

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“…1 Four sets of measurements were performed using absolute measurement techniques in which the decay of the Cl atom (formed via flash photolysis of Cl 2 ) in the presence of a large excess of a ketone was monitored spectroscopically. [2][3][4][5] It might be expected that these five data sets would provide a clear picture of the rate constants of these reactions. Unfortunately, such is not the case.…”

Section: Introductionmentioning

confidence: 96%

Rate Constants for the Reaction of Cl with a Series of C₄ to C₆ Ketones Using the Relative Rate Method

2007

J. Phys. Chem. A

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Rate constants for the reaction of Cl with eight ketones were measured relative to the rate constant of propane in approximately 900 Torr of N2 at ambient temperature. Experiments were carried out in a Pyrex reactor with GC analysis of the consumption of the ketones and propane. Chlorine atoms were generated by irradiation of Cl2 in the initial mixture using a black-light-blue fluorescent lamp. The rate constants determined in these experiments (10-11 cm3 molecule-1 s-1) are: butanone (3.8 +/- 0.3); 2-pentanone (11.6 +/- 1.0); 3-pentanone (8.3 +/- 0.7); 2-hexanone (19.4 +/- 1.9); 3-hexanone (15.3 +/- 1.1); cyclopentanone (10.4 +/- 0.9); 3-methyl-2-butanone (6.2 +/- 0.5); and 4-methyl-2-pentanone (12.8 +/- 1.0). The results for 2-pentanone, 3-pentanone, 2-hexanone, 3-hexanone, 3-methyl-2-butanone, and 4-methyl-2-pentanone are significantly higher (by a factor of 3 for 2-hexanone) than reported in two previous absolute rate studies. The likely explanation for this discrepancy is discussed.

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Section: Introductionmentioning

confidence: 96%

Rate Constants for the Reaction of Cl with a Series of C₄ to C₆ Ketones Using the Relative Rate Method

2007

J. Phys. Chem. A

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Rate constants for the gas‐phase reactions of chlorine atoms with a series of ketones

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Rate Constants for the Reaction of Cl with a Series of C₄ to C₆ Ketones Using the Relative Rate Method

Rate Constants for the Reaction of Cl with a Series of C₄ to C₆ Ketones Using the Relative Rate Method

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Rate constants for the gas‐phase reactions of chlorine atoms with a series of ketones

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Rate Constants for the Reaction of Cl with a Series of C4 to C6 Ketones Using the Relative Rate Method

Rate Constants for the Reaction of Cl with a Series of C4 to C6 Ketones Using the Relative Rate Method

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Rate Constants for the Reaction of Cl with a Series of C₄ to C₆ Ketones Using the Relative Rate Method

Rate Constants for the Reaction of Cl with a Series of C₄ to C₆ Ketones Using the Relative Rate Method