Ignition of monomethyl amine

Lifshitz, Assa; Bidani, Menashe; Carroll, Harvey F.; Hwang, S. M.; Fu, Peng; Shin, Kuan Soo; Gardiner, W. C.

doi:10.1016/0010-2180(91)90103-i

Cited by 14 publications

(10 citation statements)

References 4 publications

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“…The reaction of CH 3 NH 2 with HO 2 (R9, R10) has been reported to be important for predicting shock tube ignition delays at 1000-1300 K and elevated pressure. 25 There are no measurements available for the reaction, but it was recently studied theoretically by Shi et al 47 Their calculations indicate that the branching to CH 2 NH 2 (R9) decreases from about 85% to 75% in the 1000-2000 K range; for simplicity, we have assumed a constant branching fraction 9 ∕( 9 + 10 ) of 80%.…”

Section: Detailed Kinetic Modelmentioning

confidence: 99%

“…Ignition and oxidation of methylamine has been studied in shock tubes by several groups. [24][25][26] Figure 7 shows a comparison between measured ignition delays from Shin and Yoo 26 and modeling predictions. The data were obtained for a mixture of 2.0% CH 3 NH 2 and 5.5% O 2 in argon at close to atmospheric pressure and temperatures of 1324-1538 K.…”

Section: Ignition Delays In Shock Tubementioning

confidence: 99%

“…The thermal dissociation of CH

_{3}

_{2}

has been studied in a batch reactor 13 and shock tube 14–16 experiments. Oxidation of methylamine has been reported from batch reactors, 17–21 flow reactors, 22, 23 shock tubes, 24–26 and laminar, premixed flames 27 . In addition, there have been studies of methylamine oxidation in supercritical water 28–31 and in turbulent flames 32 .…”

Section: Introductionmentioning

confidence: 99%

“…In addition, there have been studies of methylamine oxidation in supercritical water 28–31 and in turbulent flames 32 . Reaction mechanisms for high‐temperature conversion of methylamine have been published, and models are available for both pyrolysis 15 and oxidation 24–26, 33 . However, due to the lack of experimental or theoretical characterization, it is common for the methylamine subset in these models to rely on rough estimates of rate constants to a significant extent.…”

Section: Introductionmentioning

confidence: 99%

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Oxidation of methylamine

Glarborg

Andreasen

Hashemi

et al. 2020

Int J of Chemical Kinetics

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A detailed chemical kinetic model for oxidation of methylamine has been developed, based on theoretical work and a critical evaluation of data from the literature. The rate coefficients for the reactions of CH 3 NH 2 + O 2 → CH 2 NH 2 / CH 3 NH + HO 2 , CH 3 NH 2 + H → CH 3 + NH 3 , CH 3 NH → CH 2 NH 2 , and CH 3 NH + O 2 → CH 2 NH + HO 2 were calculated from ab initio theory. The mechanism was validated against experimental results from batch reactors, flow reactors, shock tubes, and premixed flames. The model predicts satisfactorily explosion limits for CH 3 NH 2 and its oxidation in a flow reactor. However, oxidation in the presence of nitric oxide, which strongly promotes reaction at lower temperatures, is only described qualitatively. Furthermore, calculated flame speeds are higher than reported experimental values; the model does not capture the inhibiting effect of the NH 2 group in CH 3 NH 2 compared to CH 4. More work is desirable to confirm the products of the CH 3 NH + NO reaction and to look into possible pathways to NH 3 in methylamine oxidation.

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Section: Detailed Kinetic Modelmentioning

confidence: 99%

Section: Ignition Delays In Shock Tubementioning

confidence: 99%

“…The thermal dissociation of CH

_{3}

_{2}

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Oxidation of methylamine

Glarborg

Andreasen

Hashemi

et al. 2020

Int J of Chemical Kinetics

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“…In contrast with the monomethylamine pyrolysis, the monomethylamine oxidation behind shock waves, however, was not much studied experimentally except for Hwang et al 15 and Lifshitz et al 16 Hwang et al 15 studied monomethylamine oxidation by IR laser kinetic absorption spectroscopy behind reflected shock waves over the temperature range 1260-1600 K and modeled with a 141 reaction mechanism. Lifshitz et al 16 studied the ignition of monomethylamine in reflected shock waves over the temperature range from 1000 to 1300 K. Kantak et al 17 recently studied the oxidation of monomethylamine in a flow reactor over the temperature range of 600-1400 K and assembled a reaction mechanism describing the monomethylamine conversion under these conditions. Monomethylamine as the simplest primary organic amine is the model compound to study the 'Fuel NO' mechanism converting nitrogen-containing fuel to NO and it also acts as an SNCR agent by producing NH 2 radical to reduce NO.…”

Section: Introductionmentioning

confidence: 99%

Shock Tube and Modeling Study of the Monomethylamine Oxidation at High Temperature

2004

Bulletin of the Korean Chemical Society

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The ignition of monomethylamine was studied in reflected shock waves over the temperature range of 1255-1579 K and the pressure range of 1.04-1.51 bar. The ignition delay time was measured by the sudden increase of pressure profile and the radiation emitted by OH radicals. The relationship between the ignition delay time and the concentrations of monomethylamine and oxygen was determined in the form of mass-action expressions with an Arrhenius temperature dependence. In contrast to the behavior observed in hydrocarbons, monomethylamine acts to accelerate rather than inhibit its own ignition. And numerical modeling of the ignition of CH 3 NH 2 has also been carried out to test the several kinetic mechanisms.

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