2012
DOI: 10.1021/jp303853h
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Abstract: The overall rate constants for the reactions of hydroxyl radicals (OH) with a series of ketones, namely, acetone (CH(3)COCH(3)), 2-butanone (C(2)H(5)COCH(3)), 3-pentanone (C(2)H(5)COC(2)H(5)), and 2-pentanone (C(3)H(7)COCH(3)), were studied behind reflected shock waves over the temperature range of 870-1360 K at pressures of 1-2 atm. OH radicals were produced by rapid thermal decomposition of the OH precursor tert-butyl hydroperoxide (TBHP) and were monitored by the narrow line width ring dye laser absorption … Show more

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Cited by 46 publications
(54 citation statements)
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“…Using a common‐mode‐rejection detection scheme, a minimum absorbance of 0.1% could be detected, which resulted in a minimum detection sensitivity of ∼0.2 ppm at 1400 K and 1.5 atm. Further details of the OH laser diagnostic setup are discussed elsewhere . The OH radical concentration can be calculated from Beer's law: I / I o = exp(– k OH X OH PL ), where I and I o are the transmitted and incident laser intensities, k OH is the OH absorption coefficient, X OH is the OH mole fraction, P is the total pressure, and L is the path length (15.24 cm).…”
Section: Methodsmentioning
confidence: 99%
“…Using a common‐mode‐rejection detection scheme, a minimum absorbance of 0.1% could be detected, which resulted in a minimum detection sensitivity of ∼0.2 ppm at 1400 K and 1.5 atm. Further details of the OH laser diagnostic setup are discussed elsewhere . The OH radical concentration can be calculated from Beer's law: I / I o = exp(– k OH X OH PL ), where I and I o are the transmitted and incident laser intensities, k OH is the OH absorption coefficient, X OH is the OH mole fraction, P is the total pressure, and L is the path length (15.24 cm).…”
Section: Methodsmentioning
confidence: 99%
“…Estimations by Pang et al [23] were used for the rate coefficients of reactions (3) and (4). Reactions (6) and (7) were updated based on the results of Pang et al [23] and Lam et al [28], respectively. The pressure-dependent decomposition reactions for methanol and ethane were updated as well; methanol decomposition, reaction (8), was updated with rate coefficients from the GRI-Mech 3.0 mechanism [29], determined from a 5-channel RRKM calculation of the CH 3 OH system.…”
Section: Kinetic Measurements and Analysismentioning
confidence: 99%
“…The m-xylene submechanism was validated against ignition delay time and burning velocity measurements of m-xylene. The TBHP ((CH3)3-CO-OH) chemistry set (described in [22,[26][27][28]) is included in the base mechanism of Narayanaswamy et al [25] to simulate OH radical formation.…”
Section: High-temperature Rate-constant Measurementsmentioning
confidence: 99%