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- W3197367094 abstract "The addition of alcohols to fueled mixture has been extensively documented as a practical way to significantly mitigate soot emissions by internal combustion engines. While being crucial to the initiation of some soot precursors formation, some chemical pathways attributed to the presence of alcohol-derived species remain unclear. Consequently, atmospheric steady flat laminar rich (equivalence ratio ϕ=1.7) ethylene/air premixed flames were established over a McKenna burner. The unburnt stream was seeded by prevaporized alcohols ranging from C3 to C5. Every flame was probed and sampled gases were investigated using a gas chromatography (GC) device equipped with a flame ionization detector (FID). Thus, quantitative mole fraction profiles are reported as a function of the distance to the burner tip. In total, 17 chemical compounds, including isomeric species (butene and pentene) have been detected quantitatively. Significant discrepancies among the intermediate species pool were observed, especially the amount of propene, butene, and pentene isomers (produced mostly due to the addition of propanol, butanol, and pentanol, respectively). Several kinetic mechanisms support the experimental results, none of them do reproduce properly the alkene production measured. Further numerical investigations were conducted focusing on the pathways that lead to the production of the alkenes identified. To the authors’ knowledge, the results reported are the first that (i) provide experimental results for the addition of 2,2-dimethyl-propanol, (ii) document unambiguously the mole fraction profiles of the three butene and five pentene isomers, and (iii) unveil similar trends on alkene production due to the addition of C3 to C5 alcohols, i.e. a clear hierarchy among primary, secondary, and tertiary alcohols for the rich atmospheric premixed flames studied." @default.
- W3197367094 created "2021-09-13" @default.
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- W3197367094 date "2022-01-01" @default.
- W3197367094 modified "2023-10-14" @default.
- W3197367094 title "Doping rich ethylene premixed flames: Influence of C<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline id=d1e1513 altimg=si9.svg><mml:msub><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:math> C<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline id=d1e1523 altimg=si10.svg><mml:msub><mml:mrow /><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:math> alcohols on the structure of the steady one-dimensional laminar flame" @default.
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- W3197367094 doi "https://doi.org/10.1016/j.fuel.2021.121793" @default.
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