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dc.contributor.authorShankar, Vijai
dc.contributor.authorLi, Yang
dc.contributor.authorSingh, Eshan
dc.contributor.authorSarathy, Mani
dc.date.accessioned2020-12-07T06:42:43Z
dc.date.available2020-12-07T06:42:43Z
dc.date.submitted2019-11-07
dc.identifier.citationShankar, V. S. B., Li, Y., Singh, E., & Sarathy, S. M. (2020). Understanding the synergistic blending octane behavior of 2-methylfuran. Proceedings of the Combustion Institute. doi:10.1016/j.proci.2020.06.277
dc.identifier.issn1540-7489
dc.identifier.doi10.1016/j.proci.2020.06.277
dc.identifier.urihttp://hdl.handle.net/10754/666289
dc.description.abstractThe autoignition kinetics of hydrocarbons is an important criterion for selecting fuels for piston reciprocating engines, and it can be determined by relative performance to mixtures of alkanes, n-heptane and iso-octane, under certain standardized operating conditions. 2-methylfuran is a potential biofuel candidate, whose autoignition chemistry is markedly different from alkanes. Its octane behavior when blended with paraffins also shows a marked difference. The blending octane behavior of a fuel is characterized by its Blending Octane Number (BON). The BON of 2-methylfuran was extensively characterized in this work. 2-methylfuran's BON was mapped from experimental ignition delay times measured in a constant volume combustion chamber using established correlations. The effect on BON was studied depending on the RON of the base fuel into which 2-methylfuran was blended, as well as the quantity of 2-methylfuran blended. BON of 2-methyfuran was greater than its RON by a factor of four or more for some blends studied. BON reduced with increasing RON of the base fuel, as well as with increasing quantity of 2-methylfuran blended. A chemical kinetic model was created by integration of well validated sub-models for the blend components, and then used to explain the chemical kinetics leading to the extremely high BON values of 2-methylfuran. The synergetic anti-knock blending effect of 2-methylfuran is partially due to its physical properties leading to a greater molar fraction per volume fraction in the blend compared to iso-octane. Analysis using chemical kinetic model revealed that the chemical action behind 2-methylfuran's blending octane behavior was due to its ability to quench OH radicals which are important to the low-temperature oxidation chemistry of alkanes. This quenching effect is achieved due to the more rapid reaction rate of 2-methylfuran with OH radical compared to iso-octane, followed by the immediate conversion of the adduct shifting the equilibrium towards the product.
dc.description.sponsorshipThe work at King Abdullah University of Science and Technology (KAUST) was supported by the KAUST Clean Fuels Consortium (KCFC) and its member companies.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S1540748920303692
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Proceedings of the Combustion Institute. 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 Proceedings of the Combustion Institute, [, , ([pubDate])] DOI: 10.1016/j.proci.2020.06.277 . © . 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.titleUnderstanding the synergistic blending octane behavior of 2-methylfuran
dc.typeArticle
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentChemical Engineering Program
dc.identifier.journalProceedings of the Combustion Institute
dc.rights.embargodate2022-12-07
dc.eprint.versionPost-print
kaust.personShankar, Vijai
kaust.personLi, Yang
kaust.personSingh, Eshan
kaust.personSarathy, Mani
dc.date.accepted2020-06-16
dc.identifier.eid2-s2.0-85091020087
refterms.dateFOA2020-12-09T10:47:44Z


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