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Titolo:
ON THE UNCERTAINTIES IN THE RATE COEFFICIENTS FOR OH REACTIONS WITH HYDROCARBONS, AND THE RATE COEFFICIENTS OF THE 1,3,5-TRIMETHYLBENZENE AND M-XYLENE REACTIONS WITH OH RADICALS IN THE GAS-PHASE
Autore:
KRAMP F; PAULSON SE;
Indirizzi:
UNIV CALIF LOS ANGELES,DEPT ATMOSPHER SCI LOS ANGELES CA 90095 UNIV CALIF LOS ANGELES,DEPT ATMOSPHER SCI LOS ANGELES CA 90095 UNIV CALIF LOS ANGELES,DEPT BIOCHEM & CHEM LOS ANGELES CA 90095
Titolo Testata:
The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory
fascicolo: 16, volume: 102, anno: 1998,
pagine: 2685 - 2690
SICI:
1089-5639(1998)102:16<2685:OTUITR>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
RATE CONSTANTS; AROMATIC-HYDROCARBONS; REFORMULATED GASOLINES; METHANOL FUELS; KINETICS; SERIES; O(P-3); REACTIVITIES; MECHANISM; ALKANES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
F. Kramp e S.E. Paulson, "ON THE UNCERTAINTIES IN THE RATE COEFFICIENTS FOR OH REACTIONS WITH HYDROCARBONS, AND THE RATE COEFFICIENTS OF THE 1,3,5-TRIMETHYLBENZENE AND M-XYLENE REACTIONS WITH OH RADICALS IN THE GAS-PHASE", The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 102(16), 1998, pp. 2685-2690

Abstract

Rate coefficients for the gas-phase reactions of 1,3,5-trimethylbenzene (TMB) and rn-xylene with the OH radical relative to 10 reference compounds were measured yielding (57.3 +/- 5.3) x 10(-12) and (22.0 +/- 2.7) x 10(-12) cm(3) molecule(-1) s(-1), respectively (uncertainties are 2 sigma). These uncertainties arise from a combination of the uncertainty of the reference rate coefficients and experimental errors; thus, the average uncertainty for the rate coefficients of the 10 reference compounds must be less than or equal to the scatter observed in this study. For 16 and 21 measurements with TMB and m-xylene, the observed scatter was +/-10% and +/-12%, respectively. The average of the uncertainties is significantly smaller than the uncertainties that are frequently assumed or recommended, which range from +/-15 to 35%. Absolute rate coefficients for the reaction of TMB and m-xylene with ozone are also reported. Relative rate coefficients for reaction with OH for di-n-butyl ether, methylcyclohexane, cyclopentane, toluene, and cyclohexane of 28.9 +/- 2.3, 9.4 +/- 0.6, 4.8 +/- 0.6, 5.5 +/- 0.5, and 7.2 +/- 0.6 (x10(-12) cm(3) molecule(-1) s(-1)) were also measured (uncertainties indicate the whole range of scatter).

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Documento generato il 20/09/20 alle ore 22:11:50