Burning velocities and jet-stirred reactor oxidation of diethyl carbonate

Shahla, Roya; Togbé, Casimir; Thion, Sébastien; Timothée, Romain; Lailliau, Maxence; Halter, Fabien; Chauveau, Christian; Dayma, Guillaume; Dagaut, Philippe

doi:10.1016/j.proci.2016.06.041

Cited by 24 publications

(14 citation statements)

References 19 publications

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“…Concerning the DF/DEC blend, acetaldehyde was again the most abundant carbonyl emitted, followed by formaldehyde. Such important quantity for acetaldehyde is consistent with experimental results obtained from the oxidation of diethyl carbonate in a jet-stirred reactor [26] where acetaldehyde formation can result from: Figure 5-(b) focuses on other carbonyls (methacrolein, 2-butanone, n-butyraldehyde, benzaldehyde, valeraldehyde, p-tolualdehyde and hexanal) which were present in the exhaust emissions but in much lower concentrations. High emissions of nbutyraldehyde and 2-butanone were observed with the DF/1-Butanol blend.…”

Section: Engine Resultssupporting

confidence: 87%

Emission of Carbonyl and Polyaromatic Hydrocarbon Pollutants From the Combustion of Liquid Fuels: Impact of Biofuel Blending

Dagaut

Bedjanian

Dayma

et al. 2018

Journal of Engineering for Gas Turbines and Power

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The combustion of conventional fuels (diesel and Jet A-1) with 10–20% vol oxygenated biofuels (ethanol, 1-butanol, methyl octanoate, rapeseed oil methyl ester (RME), diethyl carbonate, tri(propylene glycol)methyl ether, i.e., CH3(OC3H6)3OH, and 2,5-dimethylfuran (2,5-DMF)) and a synthetic paraffinic kerosene (SPK) was studied. The experiments were performed using an atmospheric pressure laboratory premixed flame and a four-cylinder four-stroke diesel engine operating at 1500 rpm. Soot samples from kerosene blends were collected above a premixed flame for analysis. Polyaromatic hydrocarbons (PAHs) were extracted from the soot samples. After fractioning, they were analyzed by high-pressure liquid chromatography (HPLC) with UV and fluorescence detectors. C1 to C8 carbonyl compounds (CBCs) were collected at the diesel engine exhaust on 2,4-dinitrophenylhydrazine coated cartridges (DNPH) and analyzed by HPLC with UV detection. The data indicated that blending conventional fuels with biofuels has a significant impact on the emission of both CBCs and PAHs adsorbed on soot. The global concentration of 18 PAHs (1-methyl-naphthalene, 2-methyl-naphthalene, and the 16 U.S. priority EPA PAHs) on soot was considerably lowered using oxygenated fuels, except 2,5-DMF. Conversely, the total carbonyl emission increased by oxygenated biofuels blending. Among them, ethanol and 1-butanol were found to increase considerably the emissions of CBCs.

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Section: Engine Resultssupporting

confidence: 87%

Emission of Carbonyl and Polyaromatic Hydrocarbon Pollutants From the Combustion of Liquid Fuels: Impact of Biofuel Blending

Dagaut

Bedjanian

Dayma

et al. 2018

Journal of Engineering for Gas Turbines and Power

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“…A DMC and diesel blend may also have potential in the reduction of yet unregulated carcinogenic emissions such as benzene and 1,3-butadiene [250][251][252][253][254]. Similarly to these processes, the use of diethyl carbonate (DEC) instead of DMC has been much less investigate [221,227,234], although the available results in literature [255][256][257][258][259][260][261][262][263][264][265][266] allow us to conclude that they exhibit a behavior very similar to those obtained with DMC.…”

Section: Biodiesel-like Biofuels That Integrate the Glycerol As Glycementioning

confidence: 99%

Biodiesel at the Crossroads: A Critical Review

et al. 2019

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The delay in the energy transition, focused in the replacement of fossil diesel with biodiesel, is mainly caused by the need of reducing the costs associated to the transesterification reaction of vegetable oils with methanol. This reaction, on an industrial scale, presents several problems associated with the glycerol generated during the process. The costs to eliminate this glycerol have to be added to the implicit cost of using seed oil as raw material. Recently, several alternative methods to convert vegetable oils into high quality diesel fuels, which avoid the glycerol generation, are being under development, such as Gliperol, DMC-Biod, or Ecodiesel. Besides, there are renewable diesel fuels known as “green diesel”, obtained by several catalytic processes (cracking or pyrolysis, hydrodeoxygenation and hydrotreating) of vegetable oils and which exhibit a lot of similarities with fossil fuels. Likewise, it has also been addressed as a novel strategy, the use of straight vegetable oils in blends with various plant-based sources such as alcohols, vegetable oils, and several organic compounds that are renewable and biodegradable. These plant-based sources are capable of achieving the effective reduction of the viscosity of the blends, allowing their use in combustion ignition engines. The aim of this review is to evaluate the real possibilities that conventional biodiesel has in order to success as the main biofuel for the energy transition, as well as the use of alternative biofuels that can take part in the energy transition in a successful way.

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“…Recently, carbonates including dimethyl carbonate (DMC) and diethyl carbonate (DEC) (see the chemical structures in Scheme 1) have drawn increasing interest in the combustion community [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…For such a promising oxygenated fuel as DEC, a kinetic understanding in extensive combustion conditions is necessary for elucidating the mechanism of emissions reduction and for achieving controllable applications. Recently, the oxidation kinetics of DEC was addressed in systematical investigations [3,4]. Ignition delay times and species concentrations during DEC oxidation in a jet-stirred reactor (JSR) at elevated pressures and low-to-medium temperatures were measured [3], and in the same work, a detailed kinetic model was proposed and tested.…”

Section: Introductionmentioning

confidence: 99%

“…Ignition delay times and species concentrations during DEC oxidation in a jet-stirred reactor (JSR) at elevated pressures and low-to-medium temperatures were measured [3], and in the same work, a detailed kinetic model was proposed and tested. A later work [4] complemented the JSR oxidation experiments at the atmospheric pressure for further model validations, and laminar burning velocities were also experimentally determined to test the model performance at higher temperatures. Though the model could satisfactorily predict the measurements under low-temperature oxidation conditions [3,4], the high-temperature kinetics has not been sufficiently tested, as only limited global parameters, the laminar burning velocities [4], were available for the model validation.…”

Section: Introductionmentioning

confidence: 99%

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Exploring the high-temperature kinetics of diethyl carbonate (DEC) under pyrolysis and flame conditions

Sun

Huang

Tao

et al. 2017

Combustion and Flame

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To pursue insights into the high-temperature kinetics of diethyl carbonate (DEC), a potential clean oxygenated additive for diesel fuels, a systematical kinetic investigation was carried out in this work. Species mole fraction variations were recorded by a gas chromatography (GC) system during the pyrolysis of DEC in a flow reactor under three different pressures (30, 150 and 780 Torr). And quantitative measurements were conducted for over thirty species in a fuel-rich (ϕ=1.5) premixed DEC/O 2 /argon flame using synchrotron vacuum ultraviolet photoionization mass spectrometry. Pressure-dependent rate coefficients for DEC unimolecular decompositions were obtained with RRKM/master equation calculations. A kinetic model for DEC high-temperature pyrolysis and combustion was developed employing the calculated kinetic parameters, which could well predict all available measurements. Model analysis revealed that a two-step molecular elimination pathway exclusively led to the fuel decomposition under pyrolysis conditions, while in the premixed flame the fuel was consumed mainly by hydrogen abstractions from the secondary carbon atoms. The pyrolysis and combustion behaviors of DEC were compared with those of dimethyl carbonate (DMC), a simpler homologue of DEC, under similar conditions. It was found that DEC was of less thermal stability during the pyrolysis and that C 2 intermediates were of much higher concentrations in the DEC flame. Furthermore, it was found that DEC shared combustion characteristics with some other oxygenated fuels possessing specific common structural features.

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Burning velocities and jet-stirred reactor oxidation of diethyl carbonate

Cited by 24 publications

References 19 publications

Emission of Carbonyl and Polyaromatic Hydrocarbon Pollutants From the Combustion of Liquid Fuels: Impact of Biofuel Blending

Emission of Carbonyl and Polyaromatic Hydrocarbon Pollutants From the Combustion of Liquid Fuels: Impact of Biofuel Blending

Biodiesel at the Crossroads: A Critical Review

Exploring the high-temperature kinetics of diethyl carbonate (DEC) under pyrolysis and flame conditions

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