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dc.contributor.authorChen, Bingjie
dc.contributor.authorWang, Haoyi
dc.contributor.authorWang, Zhandong
dc.contributor.authorHan, Jie
dc.contributor.authorAlquaity, Awad
dc.contributor.authorWang, Heng
dc.contributor.authorHansen, Nils
dc.contributor.authorSarathy, Mani
dc.date.accessioned2019-02-07T13:49:12Z
dc.date.available2019-02-07T13:49:12Z
dc.date.issued2019-01-26
dc.identifier.citationChen B, Wang H, Wang Z, Han J, Alquaity ABS, et al. (2019) Ion chemistry in premixed rich methane flames. Combustion and Flame 202: 208–218. Available: http://dx.doi.org/10.1016/j.combustflame.2019.01.009.
dc.identifier.issn0010-2180
dc.identifier.doi10.1016/j.combustflame.2019.01.009
dc.identifier.urihttp://hdl.handle.net/10754/630978
dc.description.abstractExternal electric field and plasma assisted combustion show great potential for combustion enhancement, e.g., emission and ignition control. To understand soot suppression by external electric fields and flame ignition in spark ignition engines, flame ion chemistry needs to be investigated and developed. In this work, comprehensive and systematic investigations of neutral and ion chemistry are conducted in premixed rich methane flames. Cations are measured by quadrupole molecular beam mass spectrometry (MBMS), and neutrals are measured by synchrotron vacuum ultra violet photoionization time of flight MBMS (SVUV-PI-TOF-MBMS). The molecular formula and dominant isomers of various measured cations are identified based on literature survey and quantum chemistry calculations. Experimentally, we found that H3O+ is the dominant cation in slightly rich flame (ϕ=1.5), but C3H3+ is the most significant in very rich flames (ϕ=1.8 and 2.0). An updated ion chemistry model is proposed and used to explain the effects of changing equivalence ratio. To further verify key ion-neutral reaction pathways, measured neutral profiles are compared with cation profiles experimentally. Detailed cation and neutral measurements and numerical simulations by this work help to understand and develop ion chemistry models. Deficiencies in our current understanding of ion chemistry are also highlighted to motivate further research.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST) and the Clean Combustion Research Center (CCRC). NH acknowledges support from the U.S. DOE, Office of Science, Office of Basic Energy Sciences. Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. DOE National Nuclear Security Administration under contract DE-NA0003525. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. DOE under Contract No. DEAC02-05CH11231.
dc.publisherElsevier BV
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame, [, , (2019-01-26)] DOI: 10.1016/j.combustflame.2019.01.009 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectIon chemistry
dc.subjectDominant cation
dc.subjectQuadrupole molecular beam mass spectrometry
dc.subjectPhoto-ionization molecular beam mass spectrometry
dc.subjectPremixed rich methane flame
dc.titleIon chemistry in premixed rich methane flames
dc.typeArticle
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Pyrolysis Chemistry (CPC) Group
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCombustion and Flame
dc.eprint.versionPost-print
dc.contributor.institutionInstitute for Combustion Technology, RWTH Aachen University, Templergraben 64, 52062 Aachen, Germany.
dc.contributor.institutionCombustion Research Facility, Sandia National Laboratory, Livermore, CA 94551, USA.
kaust.personChen, Bingjie
kaust.personWang, Haoyi
kaust.personWang, Zhandong
kaust.personHan, Jie
kaust.personAlquaity, Awad
kaust.personWang, Heng
kaust.personSarathy, Mani
dc.date.published-online2019-01-26
dc.date.published-print2019-04


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NOTICE: this is the author’s version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame, [, , (2019-01-26)] DOI: 10.1016/j.combustflame.2019.01.009 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Except where otherwise noted, this item's license is described as NOTICE: this is the author’s version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame, [, , (2019-01-26)] DOI: 10.1016/j.combustflame.2019.01.009 . © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/