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dc.contributor.authorWu, Chih-Weien_US
dc.contributor.authorMatsui, Hiroyukien_US
dc.contributor.authorWang, Niann-Shiahen_US
dc.contributor.authorLin, M. C.en_US
dc.date.accessioned2014-12-08T15:30:00Z-
dc.date.available2014-12-08T15:30:00Z-
dc.date.issued2011-07-21en_US
dc.identifier.issn1089-5639en_US
dc.identifier.urihttp://dx.doi.org/10.1021/jp202001qen_US
dc.identifier.urihttp://hdl.handle.net/11536/21492-
dc.description.abstractThe thermal decomposition of C(2)H(5)OH highly diluted in Ar (1 and 3 ppm) has been studied by monitoring H atoms using the atomic resonance absorption spectrometry (ARAS) technique behind reflected shock waves over the temperature range 1450-1760 K at fixed pressure: 1, 1.45, and 2 atm. The rate constant and the product branching fractions have been determined by analyzing temporal profiles of H atoms; the effect of the secondary reactions on the results has been examined by using a detailed reaction mechanism composed of 103 elementary reactions. The apparent rate constant of ethanol decomposition can be expressed as k(1)/s(-1) = (5.28 +/- 0.14) x 10(10) exp[-(23 530 +/- 980)/T] (T = 1450-1670 K, P = 1-2 atm) without a detectable pressure dependence within the tested pressure range of this study. Branching fractions for producing CH(3) + CH(2)OH (1a) and H(2)O + C(2)H(4) (1b) have been examined by a quantitative measurement of H atoms produced in the successive decompositions of the products CH(2)OH (1a): the pressure dependence of the branching fraction for channel 1a is obtained by a linear least-squares analysis of the experimental data and can be expressed as phi(1a) = (0.71 +/- 0.07) - (826 +/- 116)/T, (0.92 +/- 0.04) (1108 +/- 70)/T, and (1.02 +/- 0.10) (1229 +/- 168)/T for T = 1450-1760 K, at P = 0.99, 1.45, and 2.0 atm, respectively. The rate constant obtained in this study is found to be consistent with previous theoretical and experimental results; however, the pressure dependence of the branching fraction obtained in this study is smaller than those of previous theoretical works. Modification of the parameters for the decomposition rate in the falloff region is suggested to be important to improve the practical modeling of the pyrolysis and combustion of ethanolen_US
dc.language.isoen_USen_US
dc.titleShock Tube Study on the Thermal Decomposition of Ethanolen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/jp202001qen_US
dc.identifier.journalJOURNAL OF PHYSICAL CHEMISTRY Aen_US
dc.citation.volume115en_US
dc.citation.issue28en_US
dc.citation.spage8086en_US
dc.citation.epage8092en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.identifier.wosnumberWOS:000292893500004-
dc.citation.woscount5-
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