کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
241366 1427925 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fuel-structure dependence of benzene formation processes in premixed flames fueled by C6H12 isomers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Fuel-structure dependence of benzene formation processes in premixed flames fueled by C6H12 isomers
چکیده انگلیسی

The fuel-structure-dependent significance of various benzene formation pathways is analyzed using data from rich (ϕ = 1.7) flames fueled by four C6H12 isomers: 1-hexene, cyclohexane, methylcyclopentane, and 3,3-dimethyl-1-butene. The isomer-resolved chemical compositions of the four premixed, laminar low-pressure flat flames are determined by flame-sampling molecular-beam mass spectrometry employing single-photon ionization by synchrotron generated vacuum-ultraviolet photons. Isomer-resolving photoionization efficiency curves and quantitative mole fraction profiles reveal the dominant fuel destruction pathways, the influence of different fuel consumption processes on the formation of commonly considered benzene precursors, and the contributions of several routes towards benzene formation. While propargyl and allyl radicals dominate benzene formation in the combustion of 1-hexene, contributions from reactions involving i-C4H5 and C5H5 radicals are revealed in the flames of 3,3-dimethyl-1-butene and methylcyclopentane, respectively. Close to the burner surface, successive dehydrogenation of the fuel is found to be important for the cyclohexane flame and to some smaller extent for the methylcyclopentane flame.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Proceedings of the Combustion Institute - Volume 33, Issue 1, 2011, Pages 585–592
نویسندگان
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