کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6341418 | 1620392 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature dependence of the yields of methacrolein and methyl vinyl ketone from the OH-initiated oxidation of isoprene under NOx-free conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Temperature dependence of the yields of methacrolein and methyl vinyl ketone from the OH-initiated oxidation of isoprene under NOx-free conditions Temperature dependence of the yields of methacrolein and methyl vinyl ketone from the OH-initiated oxidation of isoprene under NOx-free conditions](/preview/png/6341418.png)
چکیده انگلیسی
Yields of methacrolein (MAC) and methyl vinyl ketone (MVK) from the OH-initiated oxidation of isoprene were measured under NOx-free conditions at 303, 323 and 343Â K and 1Â atm in a quartz reaction chamber coupled to a mass spectrometer. Measured yields of MAC and MVK were approximately 9-11% and 17â22%, respectively at temperatures between 303 and 343Â K, in good agreement with previous studies. The measured yields of MAC and MVK, at 303 and 323Â K as well as the measured yield of MAC at 343Â K were reproduced reasonably well using an explicit model of isoprene oxidation. However, the experimental yields of MVK at 343Â K were underestimated by the model, suggesting that a temperature dependent source of MVK was missing. Several recently proposed additions to the isoprene oxidation mechanism, including 1,6- and 1,5-H shift isomerization reactions of isoprene-based hydroxyalkyl peroxy radicals, were tested in order to determine if these mechanisms can explain the observed temperature dependence of the product yields.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 79, November 2013, Pages 59-66
Journal: Atmospheric Environment - Volume 79, November 2013, Pages 59-66
نویسندگان
Maria A. Navarro, Sebastien Dusanter, Philip S. Stevens,