کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6679432 1427927 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental study of cyclohexane and methylcyclohexane oxidation at low to intermediate temperature in a motored engine
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Experimental study of cyclohexane and methylcyclohexane oxidation at low to intermediate temperature in a motored engine
چکیده انگلیسی
This work concerns the oxidation of cyclohexane and methylcyclohexane in a motored engine at low to intermediate temperatures, which is largely unknown in the literature. The experiment is conducted with variable compression ratio from 4 to 15 at equivalence ratio 0.25 and intake temperatures of 120 °C and 200 °C. Results show that overall reaction activity, indicated by fuel conversion and carbon monoxide formation, is largely enhanced by the existence of the methyl group. Cyclohexane shows a stronger negative temperature coefficient (NTC) behavior than methylcyclohexane. Detailed product analyses reveal that conjugated olefins are the major product for cyclohexane and methylcyclohexane in both low temperature oxidation and NTC regime. Four C6 oxygenates, 5-hexen-1-al, 1,2-epoxycyclohexane, 1,4-epoxycyclohexane, and cyclohexanone are detected in cyclohexane oxidation. The relative yields indicate that intramolecular hydrogen abstraction of cyclohexylperoxy radical is more likely to occur on γ-carbons than on α-, β-, or δ-carbons. Four conjugated olefins, 1-, 3-, 4-methylcyclohexenes and methylenecyclohexane, are detected in methylcyclohexane oxidation, with relative yield about 1, 1.2, 1.4 and 0.25, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Proceedings of the Combustion Institute - Volume 32, Issue 1, 2009, Pages 419-426
نویسندگان
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