http://www.cnr.it/ontology/cnr/individuo/prodotto/ID42692

Particle Inception in a Laminar Premixed Flame ofF Benzene (Articolo in rivista)

Type

Label

Particle Inception in a Laminar Premixed Flame ofF Benzene (Articolo in rivista) (literal)

Anno

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Alternative label

D'Anna A., Commodo M., and Minutolo P. (2008)
Particle Inception in a Laminar Premixed Flame ofF Benzene
in Combustion science and technology; Taylor and Francis, Abingdon (Regno Unito)
(literal)

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Pagina inizio

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Note

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Dipartimento di Ingegneria Chimica, Universit Federico II, Napoli, Italy Istituto di Ricerche sulla Combustione, CNR, Napoli, Italy (literal)

Titolo

Abstract

Spectral optical techniques, including light extinction and laser induce fluorescence and incandescence measurements, are combined to characterize large-molecule soot precursors and soot in a slightly sooting flame of benzene at atmospheric pressure. Light absorption coupled to in-situ light scattering measurements and ex-situ Atomic Force Microscopy also allowed the evaluation of particle sizes. In the benzene flame high molecular mass structures with typical sizes of 3-4nm are formed in the main oxidation region of the flame. The radical-rich flame environment in which these compounds are formed promotes their dehydrogenation increasing the level of their aromaticity. As a result, nanoparticles with typical sizes of about 5nm, absorbing and fluorescing in the visible are formed. These compounds reach a maximum concentration just before the appearance of incandescent soot particles. (literal)

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