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Kinetic Model and Experiment for Self-Ignition of Triethylaluminum and Triethylborane Droplets in Air

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dc.contributor.authorFrolov, S. M.
dc.contributor.authorAksenov, V. S.
dc.contributor.authorBasevich, V.Y.
dc.contributor.authorBelyaev, A. A.
dc.contributor.authorShamshin, I. O.
dc.contributor.authorFrolov, F. S.
dc.contributor.authorStorozhenko, P. A.
dc.contributor.authorGuseinov, S. L.
dc.contributor.authorФролов, Сергей Михайлович
dc.contributor.authorАксенов, Виктор Серафимович
dc.date.accessioned2024-12-25T18:16:53Z
dc.date.available2024-12-25T18:16:53Z
dc.date.issued2022
dc.description.abstractTriethylaluminum Al(C2H5)3, TEA, and triethylborane, B(C2H5)3, TEB, are transparent, colorless, pyrophoric liquids with boiling points of approximately 190 В°C and 95 В°C, respectively. Upon contact with ambient air, TEA, TEB, as well as their mixtures and solutions, in hydrocarbon solvents, ignite. They can also violently react with water. TEA and TEB can be used as hypergolic rocket propellants and incendiary compositions. In this manuscript, a novel scheme of the heterogeneous interaction of gaseous oxygen with liquid TEA/TEB microdroplets accompanied by the release of light hydrocarbon radicals into the gas phase is used for calculating the self-ignition of a spatially homogeneous mixture of fuel microdroplets in ambient air at normal pressure and temperature (NPT) conditions. In the primary initiation step, TEA and TEB react with oxygen, producing an ethyl radical, which can initiate an autoxidation chain. The ignition delay is shown to decrease with the decrease in the droplet size. Preliminary experiments on the self-ignition of pulsed and continuous TEA-TEB sprays in ambient air at NPT conditions are used for estimating the Arrhenius parameters of the rate-limiting reaction. Experiments confirm that the self-ignition delay of TEA-TEB sprays decreases with the injection pressure and provide the data for estimating the activation energy of the rate-limiting reaction, which appears to be close to 2 kcal/mol.
dc.identifier.citationKinetic Model and Experiment for Self-Ignition of Triethylaluminum and Triethylborane Droplets in Air / Frolov, S. M. [et al.] // Micromachines. - 2022. - 13. - № 11. - 10.3390/mi13112033
dc.identifier.doi10.3390/mi13112033
dc.identifier.urihttps://www.doi.org/10.3390/mi13112033
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85149487563&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000895169900001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/28373
dc.relation.ispartofMicromachines
dc.titleKinetic Model and Experiment for Self-Ignition of Triethylaluminum and Triethylborane Droplets in Air
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue11
oaire.citation.volume13
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relation.isAuthorOfPublication.latestForDiscoveryf1496521-237e-4526-bfeb-2206034d980e
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