High-temperature rate constant measurements for OH+xylenes

Handle URI:
http://hdl.handle.net/10754/566117
Title:
High-temperature rate constant measurements for OH+xylenes
Authors:
Elwardani, Ahmed Elsaid ( 0000-0002-2536-2089 ) ; Badra, Jihad; Farooq, Aamir ( 0000-0001-5296-2197 )
Abstract:
The overall rate constants for the reactions of hydroxyl (OH) radicals with o-xylene (k 1), m-xylene (k 2), and p-xylene (k 3) were measured behind reflected shock waves over 890-1406K at pressures of 1.3-1.8atm using OH laser absorption near 306.7nm. Measurements were performed under pseudo-first-order conditions. The measured rate constants, inferred using a mechanism-fitting approach, can be expressed in Arrhenius form as:k1=2.93×1013exp(-1350.3/T)cm3mol-1s-1(890-1406K)k2=3.49×1013exp(-1449.3/T)cm3mol-1s-1(906-1391K)k3=3.5×1013exp(-1407.5/T)cm3mol-1s-1(908-1383K)This paper presents, to our knowledge, first high-temperature measurements of the rate constants of the reactions of xylene isomers with OH radicals. Low-temperature rate-constant measurements by Nicovich et al. (1981) were combined with the measurements in this study to obtain the following Arrhenius expressions, which are applicable over a wider temperature range:k1=2.64×1013exp(-1181.5/T)cm3mol-1s-1(508-1406K)k2=3.05×109exp(-400/T)cm3mol-1s-1(508-1391K)k3=3.0×109exp(-440/T)cm3mol-1s-1(526-1383K) © 2015 The Combustion Institute.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
Combustion and Flame
Issue Date:
Jun-2015
DOI:
10.1016/j.combustflame.2015.02.001
Type:
Article
ISSN:
00102180
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorElwardani, Ahmed Elsaiden
dc.contributor.authorBadra, Jihaden
dc.contributor.authorFarooq, Aamiren
dc.date.accessioned2015-08-12T09:28:59Zen
dc.date.available2015-08-12T09:28:59Zen
dc.date.issued2015-06en
dc.identifier.issn00102180en
dc.identifier.doi10.1016/j.combustflame.2015.02.001en
dc.identifier.urihttp://hdl.handle.net/10754/566117en
dc.description.abstractThe overall rate constants for the reactions of hydroxyl (OH) radicals with o-xylene (k 1), m-xylene (k 2), and p-xylene (k 3) were measured behind reflected shock waves over 890-1406K at pressures of 1.3-1.8atm using OH laser absorption near 306.7nm. Measurements were performed under pseudo-first-order conditions. The measured rate constants, inferred using a mechanism-fitting approach, can be expressed in Arrhenius form as:k1=2.93×1013exp(-1350.3/T)cm3mol-1s-1(890-1406K)k2=3.49×1013exp(-1449.3/T)cm3mol-1s-1(906-1391K)k3=3.5×1013exp(-1407.5/T)cm3mol-1s-1(908-1383K)This paper presents, to our knowledge, first high-temperature measurements of the rate constants of the reactions of xylene isomers with OH radicals. Low-temperature rate-constant measurements by Nicovich et al. (1981) were combined with the measurements in this study to obtain the following Arrhenius expressions, which are applicable over a wider temperature range:k1=2.64×1013exp(-1181.5/T)cm3mol-1s-1(508-1406K)k2=3.05×109exp(-400/T)cm3mol-1s-1(508-1391K)k3=3.0×109exp(-440/T)cm3mol-1s-1(526-1383K) © 2015 The Combustion Institute.en
dc.publisherElsevier BVen
dc.subjectHydroxyl radicalen
dc.subjectLaser absorptionen
dc.subjectRate constanten
dc.subjectShock tubeen
dc.subjectXyleneen
dc.titleHigh-temperature rate constant measurements for OH+xylenesen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalCombustion and Flameen
dc.contributor.institutionMechanical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypten
dc.contributor.institutionSaudi Aramco Research and Development Center, Fuel Technology R and D Division, Dhahran 31311, Saudi Arabiaen
kaust.authorElwardani, Ahmed Elsaiden
kaust.authorBadra, Jihaden
kaust.authorFarooq, Aamiren
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