Effets de parois dans la pyrolyse du methyl tert-butyl éther (MTBE)

Brocard, J.; Baronnet, F.

doi:10.1051/jcp/1987840019

Cited by 15 publications

(3 citation statements)

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“…Heterogeneous reactions are more probable than a molecular reaction at 773 K since the latter one should involve a very low activation energy. Brocard and Baronnet studied the pyrolysis of methyl tert-butyl ether in different closed vessels (packed and unpacked, coated and uncoated) [47]. They observed large changes in the reactivity of the system due to important wall effects.…”

Section: Discussionmentioning

confidence: 99%

Experimental and modeling study of the thermal decomposition of methyl decanoate

Herbinet

Glaude

Warth

et al. 2011

Combustion and Flame

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The experimental study of the thermal decomposition of methyl decanoate was performed in a jet-stirred reactor at temperatures ranging from 773 to 1123 K, at residence times between 1 and 4 s, at a pressure of 800 Torr (106.6 kPa) and at high dilution in helium (fuel inlet mole fraction of 0.0218). Species leaving the reactor were analyzed by gas chromatography. Main reaction products were hydrogen, carbon oxides, small hydrocarbons from C to C, large 1-olefins from 1-butene to 1-nonene, and unsaturated esters with one double bond at the end of the alkyl chain from methyl-2-propenoate to methyl-8-nonenoate. At the highest temperatures, the formation of polyunsaturated species was observed: 1,3-butadiene, 1,3-cyclopentadiene, benzene, toluene, indene, and naphthalene. These results were compared with previous ones about the pyrolysis of n-dodecane, an n-alkane of similar size. The reactivity of both molecules was found to be very close. The alkane produces more olefins while the ester yields unsaturated oxygenated compounds. A detailed kinetic model for the thermal decomposition of methyl decanoate has been generated using the version of software EXGAS which was updated to take into account the specific chemistry involved in the oxidation of methyl esters. This model contains 324 species and 3231 reactions. It provided a very good prediction of the experimental data obtained in jet-stirred reactor. The formation of the major products was analyzed. The kinetic analysis showed that the retro-ene reactions of intermediate unsaturated methyl esters are of importance in low reactivity systems.

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Section: Discussionmentioning

confidence: 99%

Experimental and modeling study of the thermal decomposition of methyl decanoate

Herbinet

Glaude

Warth

et al. 2011

Combustion and Flame

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“…The only specificity of ethers is a molecular reaction involving the transfer of a H-atom bound to an atom of carbon in β position of the atom of oxygen to give an alcohol molecule and an alkyl radical as proposed by Choo et al [57]. This molecular reaction was proven to be very sensitive to wall effects [58]. The presence of an atom of oxygen also favors the decomposition of radicals derived from ethers, 1 Research Octane Number (RON) or Motor Octane Number (MON) are octane ratings depending on the used experimental method and measure of how resistant gasoline is to auto-ignition (knocking).…”

Section: Figurementioning

confidence: 99%

Detailed chemical kinetic models for the low-temperature combustion of hydrocarbons with application to gasoline and diesel fuel surrogates

Battin‐Leclerc

2008

Progress in Energy and Combustion Science

581

379

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“…Par ailleurs, les traitements ou recouvrements envisagCs doivent &tre stables en prksence d'oxygkne et h des tempkratures pouvant atteindre 400°C. Ceci excluait donc des recouvrements par des rCsines ou des dCrivCs halogCnCs (24) ou par des mattriaux riches en carbone provenant de pyrolyses de composCs halogCnCs (25); ce dernier type de traitement s'ttait rCvClC efficace dans 1'Ctude de la pyrolyse du MTBE, rkaction qui s'Ctait rCvtlCe trks sensible aux effets de parois (26).…”

Section: Reproductibilite' Des Expe'riences Effets De Paroisunclassified

Étude chimique et cinétique de l'oxydation homogène en phase gazeuse d'alcanes légers. I. Isobutane

Vogin¹,

Baronnet²,

Scacchi³

1989

Can. J. Chem.

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A literature survey on the homogeneous gas-phase oxidation of light alkanes shows that despite a rather high number of papers there are still, even in the case of isobutane, an important number of unresolved questions, which makes the writing of a reaction scheme rather difficult. To obtain more reliable experimental data, we have studied the homogeneous gas-phase oxidation of isobutane in a conventional static system, at 310 and 340 °C and subatmospheric pressure. This investigation is chiefly aimed at identifying and measuring the major primary products of the reaction. A chain radical scheme based on the primary products and on estimation of the rate constants of the elementary steps by the methods of Thermochemical Kinetics is put forward to interpret our experimental results. Two major reaction routes appear, one corresponding to the formation of isobutene and the other to the formation of isobutene oxide. The conclusions of the present investigation and suggestions for further developments are also mentioned. Keywords: oxidation, chemical kinetics, reaction mechanism, isobutane.

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Effets de parois dans la pyrolyse du methyl tert-butyl éther (MTBE)

Cited by 15 publications

References 0 publications

Experimental and modeling study of the thermal decomposition of methyl decanoate

Experimental and modeling study of the thermal decomposition of methyl decanoate

Detailed chemical kinetic models for the low-temperature combustion of hydrocarbons with application to gasoline and diesel fuel surrogates

Étude chimique et cinétique de l'oxydation homogène en phase gazeuse d'alcanes légers. I. Isobutane

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