کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11030251 | 1646362 | 2019 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics study of H-atom abstraction from 3-pentanone by HÌ and CÌH3 radicals and the subsequent isomerization reactions
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Kinetics study of H-atom abstraction from 3-pentanone by HÌ and CÌH3 radicals and the subsequent isomerization reactions Kinetics study of H-atom abstraction from 3-pentanone by HÌ and CÌH3 radicals and the subsequent isomerization reactions](/preview/png/11030251.png)
چکیده انگلیسی
3-Pentanone has been recently identified as a promising biofuel candidate. H-atom abstraction from 3-pentanone by HÌ and CÌH3 radicals and the subsequent isomerization reactions are important in chemical mechanism of 3-pentanone. In the present study, the potential energy surfaces were calculated at M06-2X/ma-TZVP//M06-2X/6-311+G(2df,2p). The rate constants of these reactions were calculated using the conventional transition state theory (TST) including the multi-structural torsional (MS-T) anharmonicity and tunneling corrections with the Eckart approximation. The results show that the updated rate constants deviate from previous data by up to a few orders of magnitude. Tunneling effect increases the rate constants at low temperatures significantly. Torsional anharmonicity was taken into consideration by the MS-T method. Hydrogen from the methylene in 3-pentanone is easier to be abstracted than from the methyl group. Hydrogen abstraction by HÌ from the methylene in 3-pentanone is the fastest reaction among them. The calculated rate constants of the five reactions are updated in the Dames-2014 mechanism, and the predictions of ignition delay time of the updated mechanism agree better with the previous experimental data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 236, 15 January 2019, Pages 1018-1025
Journal: Fuel - Volume 236, 15 January 2019, Pages 1018-1025
نویسندگان
Jia Cheng, Chun Zou, Yang Liu, Shibo Liu, Huiqiao Jia, Xiaoqing You,