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dc.contributor.authorAbdrabou, Moataz K.
dc.contributor.authorMorajkar, Pranay P.
dc.contributor.authorGuerrero Peña, Gerardo D.J.
dc.contributor.authorRaj, Abhijeet
dc.contributor.authorElkadi, Mirella
dc.contributor.authorSalkar, Akshay V.
dc.date.accessioned2020-05-06T08:09:46Z
dc.date.available2020-05-06T08:09:46Z
dc.date.issued2020-04-29
dc.date.submitted2020-01-29
dc.identifier.citationAbdrabou, M. K., Morajkar, P. P., Guerrero Peña, G. D. J., Raj, A., Elkadi, M., & Salkar, A. V. (2020). Effect of 5-membered bicyclic hydrocarbon additives on nanostructural disorder and oxidative reactivity of diffusion flame-generated diesel soot. Fuel, 275, 117918. doi:10.1016/j.fuel.2020.117918
dc.identifier.issn0016-2361
dc.identifier.doi10.1016/j.fuel.2020.117918
dc.identifier.urihttp://hdl.handle.net/10754/662739
dc.description.abstractSoot emission from diesel engines is of serious concern, as it is carcinogenic and remains suspended in air for a long time to cause adverse effects on human health and the environment. A way to reduce soot emission is by altering soot nanostructures by introducing fringe curvatures to enhance reactivity and increase oxidation. Such disorder in soot nanostructure can be initiated by the introduction of 5-membered rings into 6-membered, graphite-like soot structures. This study investigates the effect of the addition of norbornane, a saturated, 5-membered bicyclic hydrocarbon additive to diesel on the physicochemical properties, sooting propensity, structural disorders, and the oxidative reactivity of soot. The physicochemical analysis revealed that the threshold sooting index (TSI) of the blend is reduced to 29.5 at an optimum blending percentage of 10% norbornane-90% Diesel (NBD) as compared to the TSI of 37 for diesel. The analyses using XRD, Raman, HRTEM, and EDX indicated that the addition of this additive resulted in an increased soot nanostructural disorder, smaller PAH size, increased fringe curvature, and significantly greater aliphatic content in soot as compared to an unsaturated 5-membered bicyclic additive, dicyclopentadiene (DCPD). The reactivity studies confirmed that NBD soot is easily oxidized in air, since it requires a lower initial activation energy (90 kJ/mol) as compared to DCPD (120 kJ/mol) and pure diesel soots (170 kJ/mol). Thus, norbornane, a saturated 5-membered bicyclic compound, which is available as a by-product of polymer industry and in crude oil, can serve as a potential fuel additive for designing advanced fuels.
dc.description.sponsorshipThe authors would like to acknowledge the financial support received from Khalifa University of Science & Technology (CIRA-2018-99) U.A.E and instrumental facilities support of Goa University, India (via DST/IMRCD/INNO-INDIGO/BioCFD/2017(G)) in order to accomplish this work. This publication is based upon work supported by the Khalifa University of Science and Technology under Award No. RC2-2018-024.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0016236120309145
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Fuel. 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 Fuel, [275, , (2020-04-29)] DOI: 10.1016/j.fuel.2020.117918 . © 2020. 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.titleEffect of 5-membered bicyclic hydrocarbon additives on nanostructural disorder and oxidative reactivity of diffusion flame-generated diesel soot
dc.typeArticle
dc.contributor.departmentClean Combustion Research Centre, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
dc.identifier.journalFuel
dc.rights.embargodate2022-04-29
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Chemical Engineering and Centre for Catalysis and Separation, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates
dc.contributor.institutionSchool of Chemical Sciences, Goa University, Taleigao Plateau, Goa, India
dc.contributor.institutionDepartment of Chemistry, Khalifa University of Science & Technology, Abu Dhabi, United Arab Emirates
dc.identifier.volume275
dc.identifier.pages117918
kaust.personGuerrero Peña, Gerardo D.J.
dc.date.accepted2020-04-21
dc.identifier.eid2-s2.0-85083839373
dc.date.published-online2020-04-29
dc.date.published-print2020-09


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