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    PAH formation from jet stirred reactor pyrolysis of gasoline surrogates

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    PAH formation from Jet Stirred Reactor in gasolin surrogate.pdf
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    2.183Mb
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    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Shao, Can cc
    Kukkadapu, Goutham
    Wagnon, Scott W.
    Pitz, William J.
    Sarathy, Mani cc
    KAUST Department
    Chemical Engineering Program
    Clean Combustion Research Center
    Combustion and Pyrolysis Chemistry (CPC) Group
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2020-06-20
    Online Publication Date
    2020-06-20
    Print Publication Date
    2020-09
    Submitted Date
    2019-09-10
    Permanent link to this record
    http://hdl.handle.net/10754/663852
    
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    Abstract
    Soot particles and their precursor polycyclic aromatic hydrocarbon (PAH) species, formed during combustion, are responsible for particulate emissions in gasoline direct injection (GDI) engines. To better understand the effects of fuel composition on formation of soot in GDI engines, the pyrolysis of several gasoline surrogates was studied in a jet-stirred reactor across a broad temperature range at atmospheric pressure and 1 s residence time. Fuel and intermediate species, including aromatics up to naphthalene, were measured using gas chromatography (GC). PAH concentrations from pyrolysis of surrogate fuels were compared to gain insight into the effects of fuel composition on PAH formation. In addition, synergistic effects were observed in pyrolysis experiments of binary blends. A detailed kinetic model, recently developed at Lawrence Livermore National Laboratory (LLNL), successfully captured the effects of blending and the concentration of major PAHs. Major reaction pathways are discussed, as well as the role of important intermediate species, such as acetylene, and resonantly stabilized radicals such as allyl, propargyl, cyclopentadienyl, and benzyl in the formation of PAH.
    Citation
    Shao, C., Kukkadapu, G., Wagnon, S. W., Pitz, W. J., & Sarathy, S. M. (2020). PAH formation from jet stirred reactor pyrolysis of gasoline surrogates. Combustion and Flame, 219, 312–326. doi:10.1016/j.combustflame.2020.06.001
    Sponsors
    Research at KAUST was supported by the Office of Sponsored Research (OSR) under Award No. OSR-1026-CRG5-3022, and Saudi Aramco under the FUELCOM program. Research at LLNL was performed under the auspices of the U.S. Department of Energy (DOE), Contract DE-AC52-07NA27344 and conducted as part of the Co-Optimization of Fuels & Engines (Co-Optima) project, sponsored by the DOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies and Vehicle Technologies Offices.
    Publisher
    Elsevier BV
    Journal
    Combustion and Flame
    DOI
    10.1016/j.combustflame.2020.06.001
    Additional Links
    https://linkinghub.elsevier.com/retrieve/pii/S0010218020302066
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.combustflame.2020.06.001
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Mechanical Engineering Program; Clean Combustion Research Center

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