High-temperature pyrolysis of ethanol

Rotzoll, G.

doi:10.1016/0165-2370(85)80005-x

Cited by 46 publications

(18 citation statements)

References 15 publications

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“…The CH3CHOH radical is the dominant product at low temperatures ( [24,28,18,22]), but there is evidence ( [12,) that the branching ratios of C2H50H + X reactions shift at higher temperatures to favor the C2H40H and CH3CH20 radicals, as would be expected from bond energy considerations [29].…”

Section: Introductionmentioning

confidence: 92%

“…The static reactor studies, conducted between room temperature and 900 K ( [3][4][5]7]), observed significantly more acetaldehyde than ethene. However, the previous flow reactor studies of ethanol oxidation between 1100-1250 K ( [11,12]) found acetaldehyde and ethene in roughly equal abundance, and the diffusion flame study of Smith and Gordon [l] found more ethene than acetaldehyde by a factor of 3.…”

Section: Introductionmentioning

confidence: 97%

“…The mechanism of ethene formation via decomposition of the C2H40H radical was proposed by various investigators ([1, 2,6,9,12]) and has recently been proven unambiguously by Tully et al ( [14,15]) in fundamental kinetic studies of the C2H50H + OH and C2H4 + OH reactions. However, the previous modeling studies of ethanol oxidation have included only the CH3CHOH radical isomer and, therefore, have not adequately treated ethene formation.…”

Section: Introductionmentioning

confidence: 98%

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An experimental and modeling study of ethanol oxidation kinetics in an atmospheric pressure flow reactor

Norton¹,

Dryer²

1992

Int J of Chemical Kinetics

102

120

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Experimental profiles of stable species concentrations and temperature are reported for the flow reactor oxidation of ethanol at atmospheric pressure, initial temperatures near 1100 K and equivalence ratios of 0.61-1.24. Acetaldehyde, ethene, and methane appear in roughly equal concentrations as major intermediate species under these conditions. A detailed chemical mechanism is validated by comparison with the experimental species profiles. The importance of including all three isomeric forms of the C2H50 radical in such a mechanism is demonstrated. The primary source of ethene in ethanol oxidation is verified to be the decomposition of the C2H4OH radical. The agreement between the model and experiment at 1100 K is optimized when the branching ratio of the reactions of CzH50H with OH and H is defined by (30% C2H40H + 50% CHsCHOH + 20% CH3CH20) + XH. As in methanol oxidation, HOn chemistry is very important, while the H + 0 2 chain branching reaction plays only a minor role until late in fuel decay, even at temperatures above 1100 K.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

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An experimental and modeling study of ethanol oxidation kinetics in an atmospheric pressure flow reactor

Norton¹,

Dryer²

1992

Int J of Chemical Kinetics

102

120

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“…Data have been reported from diffusion flame [4][5][6], static reactor [7][8][9][10][11][12], shock tube [13][14][15], flow reactor [16][17][18], and laminar premixed flame [19] experiments. Norton and Dryer [17,18] conducted a series of ethanol oxidation experiments in an Atmospheric Pressure Flow Reactor (APFR) and reported the evolution profiles of stable intermediates and reaction products.…”

Section: Introductionmentioning

confidence: 97%

Ethanol pyrolysis experiments in a variable pressure flow reactor

Kazakov

Dryer

2001

Int J of Chemical Kinetics

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Experimental profiles of stable species concentrations are reported for pyrolysis of ethanol in a variable-pressure flow reactor at initial temperatures near 950 K and at constant pressures ranging from 3 to 12 atm. We present a new technique for comparison of model predictions with experimental observations in order to overcome the problem that time shifting of zero-dimensional modeling results cannot accommodate the memory effects resulting from phenomena that occur in the mixing-diffuser region in the experiments. Using this new technique, comparison of the experiments with the recent ethanol kinetic model of Marinov shows that the model underestimates the fuel consumption rate and the yields of H 2 O and C 2 H 4 , the main products of ethanol decomposition, as well as CH 3 HCO and CH 4 , species related to abstraction channels. Both decomposition and abstraction reactions require significant modifications to improve detailed modeling of ethanol pyrolysis at the conditions of the reported experiments.

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“…Kinetic parameters for ethanol consumption were selected from different previous studies (Walker, 1977(Walker, , 1976Kerr and Parsonage, 1976;Tsang, 1976;Grotheer et al, 1986;Pitz et al, 1988). This mechanism was evaluated by comparison with experimental data coming from ethanol pyrolysis in a flow reactor (Rotzoll, 1985), from ethanol oxidation in a jet-stirred reactor (Dagaut et al, 1992), from ethanol-air flame burning velocities (Gü lder, 1982) and from ethanol-O 2 -Ar ignition delays measured in shock tubes (Natarajan and Bhaskaran, 1981;Simmie, 1991a, Dunphy et al 1991b). Marinov (1999) has developed a detailed chemical kinetic model representing the high temperature ethanol oxidation.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of the Structure of a Stoichiometric Ethanol/Oxygen/Argon Flame

Leplat

Seydi

Vandooren

2008

Combustion Science and Technology

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Experimental mole fractions profiles of stable species and radicals are reported for a stoichiometric ethanol laminar premixed flame C 2 H 5 OH/O 2 /Ar burning at 50 mbar. Different mechanisms are tested by comparison of model predictions with experimental results. The results show that some ethanol mechanisms predict reasonably well reactants and products profiles but significant differences for many intermediate species remain.

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High-temperature pyrolysis of ethanol

Cited by 46 publications

References 15 publications

An experimental and modeling study of ethanol oxidation kinetics in an atmospheric pressure flow reactor

An experimental and modeling study of ethanol oxidation kinetics in an atmospheric pressure flow reactor

Ethanol pyrolysis experiments in a variable pressure flow reactor

An Experimental Study of the Structure of a Stoichiometric Ethanol/Oxygen/Argon Flame

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