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dc.contributor.authorEs-sebbar, Et-touhami
dc.contributor.authorKHALED, Fethi
dc.contributor.authorElwardani, Ahmed Elsaid
dc.contributor.authorFarooq, Aamir
dc.date.accessioned2017-01-02T09:28:32Z
dc.date.available2017-01-02T09:28:32Z
dc.date.issued2016-10-07
dc.identifier.citationEs-sebbar E, Khaled F, Elwardany A, Farooq A (2016) Rate Coefficients of the Reaction of OH with Allene and Propyne at High Temperatures. The Journal of Physical Chemistry A 120: 7998–8005. Available: http://dx.doi.org/10.1021/acs.jpca.6b04387.
dc.identifier.issn1089-5639
dc.identifier.issn1520-5215
dc.identifier.doi10.1021/acs.jpca.6b04387
dc.identifier.urihttp://hdl.handle.net/10754/622454
dc.description.abstractAllene (H2C═C═CH2; a-C3H4) and propyne (CH3C≡CH; p-C3H4) are important species in various chemical environments. In combustion processes, the reactions of hydroxyl radicals with a-C3H4 and p-C3H4 are critical in the overall fuel oxidation system. In this work, rate coefficients of OH radicals with allene (OH + H2C═C═CH2 → products) and propyne (OH + CH3C≡CH → products) were measured behind reflected shock waves over the temperature range of 843–1352 K and pressures near 1.5 atm. Hydroxyl radicals were generated by rapid thermal decomposition of tert-butyl hydroperoxide ((CH3)3–CO–OH), and monitored by narrow line width laser absorption of the well-characterized R1(5) electronic transition of the OH A–X (0,0) electronic system near 306.7 nm. Results show that allene reacts faster with OH radicals than propyne over the temperature range of this study. Measured rate coefficients can be expressed in Arrhenius form as follows: kallene+OH(T) = 8.51(±0.03) × 10–22T3.05 exp(2215(±3)/T), T = 843–1352 K; kpropyne+OH(T) = 1.30(±0.07) × 10–21T3.01 exp(1140(±6)/T), T = 846–1335 K.
dc.description.sponsorshipResearch reported in this paper was supported by the King Abdullah University of Science and Technology (KAUST) and by Saudi Aramco under the FUELCOM program.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/full/10.1021/acs.jpca.6b04387
dc.titleRate Coefficients of the Reaction of OH with Allene and Propyne at High Temperatures
dc.typeArticle
dc.contributor.departmentChemical Kinetics & Laser Sensors Laboratory
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalThe Journal of Physical Chemistry A
dc.contributor.institutionLaboratory for Thermal Processes & Combustion, Paul Scherrer Institute (PSI), CH-5232 Villigen PSI, Switzerland
dc.contributor.institutionMechanical Engineering Department, Faculty of Engineering, Alexandria University, Alexandria 21544, Egypt
kaust.personEs-sebbar, Et-touhami
kaust.personKhaled, Fathi
kaust.personElwardani, Ahmed Elsaid
kaust.personFarooq, Aamir
dc.date.published-online2016-10-07
dc.date.published-print2016-10-20


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