An ignition delay time and kinetic study of 2-methyltetrahydrofuran at high temperatures

Wang, Jingshan; Wang, Xibin; Fan, Xiangshan; Yang, Kangkang; Zhang, Yingjia

doi:10.1016/j.fuel.2016.08.104

Cited by 19 publications

(27 citation statements)

References 37 publications

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“…Pressure effect on 2‐MTHF and comparison of measured 2‐MTHF ignition delay times at 3.3 and 12 atm with model predictions [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

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Shock tube investigation of methyl tert butyl ether and methyl tetrahydrofuran high‐temperature kinetics

Jouzdani

Zheng

Zhou

et al. 2019

Int J of Chemical Kinetics

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The autoignition and pyrolysis of two C5 ethers, methyl tert butyl ether (MTBE) and 2‐methyltetrahydrofuran (2‐MTHF), are investigated using the shock tube reactor. The experiments are carried out at pressures of 3.5 and 12 atm at temperatures above 1000 K with argon as a diluent gas. By means of direct laser absorption, carbon monoxide time histories and associated chemical kinetic timescales are also determined. It is observed that the competition between ignition and pyrolysis times depends on the temperature and equivalence ratio of the ignition mixture, such that there is a temperature above which pyrolysis predominates oxidative kinetics. This crossover temperature shifts toward higher temperatures for reactive systems with a fixed fuel concentration but higher oxygen content. The resulting experimental observations are also compared with predictions of existing chemical kinetic models from the literature. The results point to differences in chemical reactivity, such that in pyrolysis conditions, the reactivity of the cyclic ether, 2‐MTHF, is generally higher than that of the aliphatic ether, MTBE. While agreement between experimental observations and model predictions is observed under certain conditions, significant variance between observations and predictions is observed under other conditions. With respect to prediction of the pyrolysis time used to capture the global kinetics of pyrolysis, it is observed that the relation of this time to the time needed to attain 90% of the equilibrium CO concentration varies greatly with the result that the models used in this work generally predict a faster initial formation of CO but a much slower approach to the equilibrium concentration. This is thought to arise from the slow transformation of intermediate CH2O and CH2CO to CO. The chemical kinetic models considered in this work are therefore not capable of predicting the CO time histories during pyrolysis.

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“…Pressure effect on 2‐MTHF and comparison of measured 2‐MTHF ignition delay times at 3.3 and 12 atm with model predictions [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

“…The results of this study were used to support the development of a detailed kinetic model for its high‐temperature combustion. Ignition delay times of 2‐MTHF at high temperature have been measured by Wang et al., and the authors also developed a new kinetic model based on the model of Moshammer et al . and Tran et al .…”

Section: Introductionmentioning

confidence: 99%

Shock tube investigation of methyl tert butyl ether and methyl tetrahydrofuran high‐temperature kinetics

Jouzdani

Zheng

Zhou

et al. 2019

Int J of Chemical Kinetics

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“…The results revealed that 2-MTHF has lower ignition delays, and therefore more reactive, than THF. The 2-MTHF ignition delay times were also compared with those for 2-MF in another study by Wang et al [203], indicating that 2-MF has shorter ignition delay times than 2-MTHF at the same conditions, and therefore, 2-MTHF exhibited lower reactivity that 2-MF, with less pronounced disparities observed at higher temperatures. Moreover, a comparative ignition study of 2-MF and 2-MTHF mixtures with oxygen and argon was performed in a shock tube by Jouzdani et al [29] at equivalence ratios of 0.5-2.0, pressures of 3 and 12 atm and temperatures of 1060-1300 K. 2-MTHF exhibited longer ignition delay times than 2-MF at 3 atm and for lean and stoichiometric conditions at 12 atm.…”

Section: Comparative Ignition Studies Of Furansmentioning

confidence: 93%

“…However, 2-EF was observed to be consistently the most reactive among the three investigated furans. Relative auto-ignition behavior of tetrahydrofurans was also investigated and compared with alkyl furans in a number of studies [29,[202][203][204]. 2-MTHF auto-ignition behavior received attention for the first time in a study by Wang et al [202] where high temperature ignition delays of 2-MTHF/O 2 /Ar mixtures were measured at pressures of 1.2-10 atm, temperatures of 1050-1800 K, equivalence ratios of 0.5-2.0 and fuel concentrations of 0.25-1.0%.…”

Section: Comparative Ignition Studies Of Furansmentioning

confidence: 99%

“…Wang et al [203] compared shock tube ignition delay times of 2-MTHF with the predictions of the model by Moshammer et al [27] (Mech I) and the model by Tran et al [158] (Mech II). The results revealed that Mech II under-predicted ignition delay times of 2-MTHF, with better agreement observed at lower temperatures.…”

Section: Validation Of Proposed Chemical Kinetic Modelsmentioning

confidence: 99%

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Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels

Eldeeb

Akih-Kumgeh

2018

Energies

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Abstract:There is growing interest in the use of furans, a class of alternative fuels derived from biomass, as transportation fuels. This paper reviews recent progress in the characterization of its combustion properties. It reviews their production processes, theoretical kinetic explorations and fundamental combustion properties. The theoretical efforts are focused on the mechanistic pathways for furan decomposition and oxidation, as well as the development of detailed chemical kinetic models. The experiments reviewed are mostly concerned with the temporal evolutions of homogeneous reactors and the propagation of laminar flames. The main thrust in homogeneous reactors is to determine global chemical time scales such as ignition delay times. Some studies have adopted a comparative approach to bring out reactivity differences. Chemical kinetic models with varying degrees of predictive success have been established. Experiments have revealed the relative behavior of their combustion. The growing body of literature in this area of combustion chemistry of alternative fuels shows a great potential for these fuels in terms of sustainable production and engine performance. However, these studies raise further questions regarding the chemical interactions of furans with other hydrocarbons. There are also open questions about the toxicity of the byproducts of combustion.

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2019

Application of Liquid Biofuels to Internal Combustion Engines

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An ignition delay time and kinetic study of 2-methyltetrahydrofuran at high temperatures

Cited by 19 publications

References 37 publications

Shock tube investigation of methyl tert butyl ether and methyl tetrahydrofuran high‐temperature kinetics

Shock tube investigation of methyl tert butyl ether and methyl tetrahydrofuran high‐temperature kinetics

Recent Trends in the Production, Combustion and Modeling of Furan-Based Fuels

Other Drop-In Liquid Biofuels

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