Show simple item record

dc.contributor.authorLi, Yang
dc.contributor.authorKlippenstein, Stephen J.
dc.contributor.authorZhou, Chong-Wen
dc.contributor.authorCurran, Henry J.
dc.date.accessioned2019-01-11T12:00:22Z
dc.date.available2019-01-11T12:00:22Z
dc.date.issued2017-09-08
dc.identifier.citationLi, Yang, Klippenstein, Stephen J., Zhou, Chong-Wen, & Curran, Henry J. (2017). Theoretical Kinetics Analysis for Ḣ Atom Addition to 1,3-Butadiene and Related Reactions on the Ċ4H7 Potential Energy Surface. The Journal of Physical Chemistry A, 121(40), 7433-7445. doi: 10.1021/acs.jpca.7b05996en_IE
dc.identifier.issn1520-5215
dc.identifier.urihttp://hdl.handle.net/10379/14794
dc.description.abstractThe oxidation chemistry of the simplest conjugated hydrocarbon, 1,3-butadiene, can provide a first step in understanding the role of polyunsaturated hydrocarbons in combustion and, in particular, an understanding of their contribution toward soot formation. On the basis of our previous work on propene and the butene isomers (1-, 2-, and isobutene), it was found that the reaction kinetics of (H) over dot-atom addition to the C=C double bond plays a significant role in fuel consumption kinetics and influences the predictions of high-temperature ignition delay times, product species concentrations, and flame speed measurements. In this study, the rate constants and thermodynamic properties for (H) over dot-atom addition to 1,3-butadiene and related reactions on the (C) over dot(4)H(7) potential energy surface have been calculated using two different series of quantum chemical methods and two different kinetic codes. Excellent agreement is obtained between the two different kinetics codes. The calculated results including zero-point energies, single-point energies, rate constants, barrier heights, and thermochemistry are systematically compared among the two quantum chemical methods. 1-Methylallyl ((C) over dot(4)H(7)1-3) and 3-buten-1-yl ((C) over dot(4)H(7)1-4) radicals and C2H4 + (C) over dot(2)H(3) are found to be the most important channels and reactivity-promoting products, respectively. We calculated that terminal addition is dominant (>80%) compared to internal (H) over dot-atom addition at all temperatures in the range 298-2000 K. However, this dominance decreases with increasing temperature. The calculated rate constants for the bimolecular reaction C4H6 + (H) over dot -> products and C2H4 + (C) over dot(2)H(3) -> products are in excellent agreement with both experimental and theoretical results from the literature. For selected C-4 species, the calculated thermochemical values are also in good agreement with literature data. In addition, the rate constants for H atom abstraction by (H) over dot atoms have also been calculated, and it is found that abstraction from the central carbon atoms is the dominant channel (>70%) at temperatures in the range of 298-2000 K. Finally, by incorporating our calculated rate constants for both (H) over dot atom addition and abstraction into our recently developed 1,3-butadiene model, we show that laminar flame speed predictions are significantly improved, emphasizing the value of this study.en_IE
dc.description.sponsorshipThis work is supported by the FUELCOM project of Saudi Aramco and by Science Foundation Ireland via their Principal Investigator Program through project number 15/IA/3177. The work at Argonne was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences under Contract No. DE-AC02-06CH11357. The authors wish to acknowledge the computational resources provided from the Irish Centre for High-End Computing (ICHEC), under project number ngche043c. We also appreciate the provision of automation Perl code from Dr. Kieran Somers, and MESS_TPfit code from Prof. C. Franklin Goldsmith.en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherAmerican Chemical Societyen_IE
dc.relation.ispartofJournal Of Physical Chemistry Aen
dc.subjectACTIVE THERMOCHEMICAL TABLESen_IE
dc.subjectUNIMOLECULAR GAS REACTIONSen_IE
dc.subjectCOMPOUND METHODS CBS-QB3en_IE
dc.subjectGAUSSIAN-BASIS SETSen_IE
dc.subjectHYDROGEN-ATOMSen_IE
dc.subjectCHEMICAL-REACTIONSen_IE
dc.subjectRATE CONSTANTSen_IE
dc.subjectMOLECULAR CALCULATIONSen_IE
dc.subjectFORMATION ENTHALPIESen_IE
dc.subjectDENSITY FUNCTIONALSen_IE
dc.titleTheoretical kinetics analysis for Ḣ atom addition to 1,3-Butadiene and related reactions on the Ċ4H7 potential energy surfaceen_IE
dc.typeArticleen_IE
dc.date.updated2019-01-08T11:19:10Z
dc.identifier.doi10.1021/acs.jpca.7b05996
dc.local.publishedsourcehttps://dx.doi.org/10.1021/acs.jpca.7b05996
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funderSaudi Aramcoen_IE
dc.contributor.funderScience Foundation Irelanden_IE
dc.contributor.funderU.S. Department of Energyen_IE
dc.internal.rssid13386056
dc.local.contactHenry Curran, Dept Of Chemistry, Room 215, Arts/Science Building, Nui Galway. 3856 Email: henry.curran@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionACCEPTED
dcterms.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/15/IA/3177/IE/Combustion Chemistry for Sustainable Fuel Utilization/en_IE
nui.item.downloads28


Files in this item

Attribution-NonCommercial-NoDerivs 3.0 Ireland
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. Please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.

The following license files are associated with this item:

Thumbnail

This item appears in the following Collection(s)

Show simple item record