Journal ArticleDOI
Rate constants for the gas-phase reactions of OH radicals with β-dimethylstyrene and acetone. Mechanism of ββdimethylstyrene NOx – air photooxidation
Claudio Chiorboli,Carlo Alberto Bignozzi,Andrea Maldotti,P. F. Giardini,A. Rossi,Vittorio Carassiti +5 more
TLDR
In this paper, the rate constants of gas phase reactions of the hydroxyl radical with β-dimethylstyrene and acetone have been determined by a relative method at 298 K.Abstract:
The rate constants of gas-phase reactions of the hydroxyl radical with β-dimethylstyrene and acetone have been determined by a relative method at 298 K. The values obtained are β-dimethylstyrene (3.3 ± 0.5) × 10−11 cm3/molecule·s and acetone (6.6 ± 0.9) × 10−13 cm3/molecule·s. A simplified kinetic treatment of the experimental data shows that β-dimethylstyrene is stoichiometrically converted to benzaldehyde and acetone. In the photooxidation study of benzaldehyde, carbon dioxide was the only detected product. The ratio between carbon dioxide produced and benzaldehyde reacted was ≥1.read more
Citations
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Rate coefficients for reaction of OH with acetone between 202 and 395 K
TL;DR: In this article, the authors investigated the kinetics of the title reaction between 202 and 395 K and at 20, 50, and 100 Torr of Ar or N2 bath gas using pulsed laser photolysis (PLP) generation of OH combined with both resonance fluorescence (RF) and laser-induced fluorescence detection.
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The combustion chemistry of a fuel tracer: Measured flame speeds and ignition delays and a detailed chemical kinetic model for the oxidation of acetone
S. Pichon,Gráinne Black,Nabiha Chaumeix,M. Yahyaoui,John M. Simmie,Henry J. Curran,R. Donohue +6 more
TL;DR: In this article, a kinetic model has been developed to simulate these and literature data for acetone and for ketene, which was found to be an important intermediate in its oxidation, and the mechanism has been based on one originally devised for dimethyl ether and modified through validation of the hydrogen, carbon monoxide and methane sub-mechanisms.
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Shock-tube and modeling study of acetone pyrolysis and oxidation
Kazutaka Sato,Yoshiaki Hidaka +1 more
TL;DR: In this article, the same authors used IR-laser absorption at 3.39 μm for acetone decay and CH-compound formation rates, and time-resolved UV absorption at 200 nm for acid decay and product formation rates.
Journal ArticleDOI
Sources and sinks of acetone in the troposphere: Behavior of reactive hydrocarbons and a stable product
TL;DR: In this paper, the authors assimilate new information about the tropospheric sources and sinks of this substance into a numerical model of its chemistry, cloud transport, and removal, and present simulations relevant to the tropical and the mid-latitude atmosphere.
References
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Hydroxyl Radical Kinetics by Kinetic Spectroscopy. VI. Reactions with Alkanes in the Range 300–500°K
TL;DR: In this paper, the reactivity of OH radicals toward a representative set of alkanes was studied and the following formula was found to reproduce accurately all of the observed abstraction rate constants for the 10 model alkanes: ktot is the total rate constant for the abstraction of H atoms from the alkane.
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A smog chamber and modeling study of the gas phase NOx–air photooxidation of toluene and the cresols
TL;DR: In this article, an experimental and modeling study of irradiated toluene and o-cresol-NOx-air mixtures at part-per-million concentrations has been carried out.
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Atmospheric photooxidation reactions. Rates, reactivity, and mechanism for reaction of organic compounds with hydroxyl radicals
TL;DR: In this article, the photooxidation of a number of organic species, representing several classes of atmospheric pollutants, was studied in the presence of HONO, NO, and NO/sub 2/ at parts per million concentrations.