کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6593652 | 1423545 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Exploring the negative temperature coefficient behavior of acetaldehyde based on detailed intermediate measurements in a jet-stirred reactor
ترجمه فارسی عنوان
بررسی رفتار ضریب دما منفی استالدئید بر اساس اندازه گیری دقیق متوسط در یک راکتور همزاد جت
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کلمات کلیدی
استالدئید، ضریب دما منفی، رآکتور جوشکاری، طیف سنج جرم مولکولی پرتو،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Acetaldehyde is an observed emission species and a key intermediate produced during the combustion and low-temperature oxidation of fossil and bio-derived fuels. Investigations into the low-temperature oxidation chemistry of acetaldehyde are essential to develop a better core mechanism and to better understand auto-ignition and cool flame phenomena. Here, the oxidation of acetaldehyde was studied at low-temperatures (528-946â¯K) in a jet-stirred reactor (JSR) with the corrected residence time of 2.7â¯s at 700â¯Torr. This work describes a detailed set of experimental results that capture the negative temperature coefficient (NTC) behavior in the low-temperature oxidation of acetaldehyde. The mole fractions of 28 species were measured as functions of the temperature by employing a vacuum ultra-violet photoionization molecular-beam mass spectrometer. To explain the observed NTC behavior, an updated mechanism was proposed, which well reproduces the concentration profiles of many observed peroxide intermediates. The kinetic analysis based on the updated mechanism reveals that the NTC behavior of acetaldehyde oxidation is caused by the competition between the O2-addition to and the decomposition of the CH3CO radical.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Combustion and Flame - Volume 192, June 2018, Pages 120-129
Journal: Combustion and Flame - Volume 192, June 2018, Pages 120-129
نویسندگان
Tao Tao, Sun Wenyu, Nils Hansen, Ahren W. Jasper, Kai Moshammer, Chen Bingjie, Wang Zhandong, Huang Can, Philippe Dagaut, Yang Bin,