Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Oxidation kinetics of methyl crotonate : A comprehensive modeling and experimental study

Johnson, Praise Noah ; Lavadera, Marco Lubrano LU ; Konnov, Alexander A. LU and Narayanaswamy, Krithika (2021) In Combustion and Flame 229.
Abstract

The current study explores the combustion behavior of methyl crotonate (CH3CH=CHC(=O)OCH3), which is a short ester representative of large unsaturated methyl esters. Starting with a detailed kinetic model for methyl butanoate (CH3CH2CH2C(=O)OCH3) oxidation, revisions are introduced to the C0-C4 chemistry based on the recent Aramco mechanism 3.0. The resulting mechanism is combined with a short model for methyl crotonate, derived from a suitable reference mechanism. Several new classes of reactions are included and the rate constants of the existing reactions are revised based on various theoretical studies and analogies to reactions of similar... (More)

The current study explores the combustion behavior of methyl crotonate (CH3CH=CHC(=O)OCH3), which is a short ester representative of large unsaturated methyl esters. Starting with a detailed kinetic model for methyl butanoate (CH3CH2CH2C(=O)OCH3) oxidation, revisions are introduced to the C0-C4 chemistry based on the recent Aramco mechanism 3.0. The resulting mechanism is combined with a short model for methyl crotonate, derived from a suitable reference mechanism. Several new classes of reactions are included and the rate constants of the existing reactions are revised based on various theoretical studies and analogies to reactions of similar species. Furthermore, the low-temperature chemistry of methyl crotonate has been implemented in the current study to extend the validity of the mechanism to lower temperatures. The resulting methyl crotonate combustion mechanism has been comprehensively validated using various experiments in the literature. In addition, experiments are performed using a heat flux burner at atmospheric conditions to measure the laminar burning velocities of methyl crotonate at different unburnt mixture temperatures (318, 338, and 358 K). The mechanism is found to reproduce the experimental data for high-temperature combustion of methyl crotonate satisfactorily. The mechanism is also found to predict the low-temperature ignition delays accurately. Sensitivity and path flux analysis are performed to delineate the importance of the different reaction classes in methyl crotonate chemistry. The current study presents a comprehensive mechanism for methyl crotonate combustion, along with a new set of experimental results complementing the existing experimental database in the literature.

(Less)
Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Combustion mechanism, Heat flux burner, Laminar burning velocities, Methyl crotonate kinetics, Methyl esters
in
Combustion and Flame
volume
229
article number
111409
publisher
Elsevier
external identifiers
  • scopus:85103251016
ISSN
0010-2180
DOI
10.1016/j.combustflame.2021.111409
language
English
LU publication?
yes
id
9d9646cf-e282-4e8b-bcd9-029419d1b020
date added to LUP
2021-04-06 14:12:22
date last changed
2022-07-19 11:57:50
@article{9d9646cf-e282-4e8b-bcd9-029419d1b020,
  abstract     = {{<p>The current study explores the combustion behavior of methyl crotonate (CH<sub>3</sub>CH=CHC(=O)OCH<sub>3</sub>), which is a short ester representative of large unsaturated methyl esters. Starting with a detailed kinetic model for methyl butanoate (CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>C(=O)OCH<sub>3</sub>) oxidation, revisions are introduced to the C<sub>0</sub>-C<sub>4</sub> chemistry based on the recent Aramco mechanism 3.0. The resulting mechanism is combined with a short model for methyl crotonate, derived from a suitable reference mechanism. Several new classes of reactions are included and the rate constants of the existing reactions are revised based on various theoretical studies and analogies to reactions of similar species. Furthermore, the low-temperature chemistry of methyl crotonate has been implemented in the current study to extend the validity of the mechanism to lower temperatures. The resulting methyl crotonate combustion mechanism has been comprehensively validated using various experiments in the literature. In addition, experiments are performed using a heat flux burner at atmospheric conditions to measure the laminar burning velocities of methyl crotonate at different unburnt mixture temperatures (318, 338, and 358 K). The mechanism is found to reproduce the experimental data for high-temperature combustion of methyl crotonate satisfactorily. The mechanism is also found to predict the low-temperature ignition delays accurately. Sensitivity and path flux analysis are performed to delineate the importance of the different reaction classes in methyl crotonate chemistry. The current study presents a comprehensive mechanism for methyl crotonate combustion, along with a new set of experimental results complementing the existing experimental database in the literature.</p>}},
  author       = {{Johnson, Praise Noah and Lavadera, Marco Lubrano and Konnov, Alexander A. and Narayanaswamy, Krithika}},
  issn         = {{0010-2180}},
  keywords     = {{Combustion mechanism; Heat flux burner; Laminar burning velocities; Methyl crotonate kinetics; Methyl esters}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Combustion and Flame}},
  title        = {{Oxidation kinetics of methyl crotonate : A comprehensive modeling and experimental study}},
  url          = {{http://dx.doi.org/10.1016/j.combustflame.2021.111409}},
  doi          = {{10.1016/j.combustflame.2021.111409}},
  volume       = {{229}},
  year         = {{2021}},
}