OPTICAL AND SPECTROSCOPIC CHARACTERIZATION OF RICH PREMIXED FLAMES ACROSS THE SOOT FORMATION THRESHOLD (Articolo in rivista)

Type
Label
  • OPTICAL AND SPECTROSCOPIC CHARACTERIZATION OF RICH PREMIXED FLAMES ACROSS THE SOOT FORMATION THRESHOLD (Articolo in rivista) (literal)
Anno
  • 1994-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1080/00102209408951879 (literal)
Alternative label
  • MINUTOLO, P; GAMBI, G; DALESSIO, A; DANNA, A (1994)
    OPTICAL AND SPECTROSCOPIC CHARACTERIZATION OF RICH PREMIXED FLAMES ACROSS THE SOOT FORMATION THRESHOLD
    in Combustion science and technology; GORDON BREACH SCI PUBL LTD, C/O STBS LTD, PO BOX 90, READING, BERKS, ENGLAND RG1 8JL (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • MINUTOLO, P; GAMBI, G; DALESSIO, A; DANNA, A (literal)
Pagina inizio
  • 311 (literal)
Pagina fine
  • 325 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 101 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1-6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • UNIV NAPLES FEDERICO II,DIPARTIMENTO INGN CHIM,NAPLES,ITALY. CNR,IST RIC COMBUST,NAPLES,ITALY (literal)
Titolo
  • OPTICAL AND SPECTROSCOPIC CHARACTERIZATION OF RICH PREMIXED FLAMES ACROSS THE SOOT FORMATION THRESHOLD (literal)
Abstract
  • Phenomenological aspects of formation, destruction, and coagulation of high molecular mass structures formed in the main oxidation zone of rich premixed flames and in rich flames well below the soot threshold limit have been examined. High molecular mass structures transparent to the visible radiation, previously detected in the preinception region of soot forming flames, are also present in flames below the soot formation limit. The onset of ultra-violet fluorescence within the main oxidation zone implies that the formation of these species is a very fast process and can be considered as a ''polymerization'' of small aromatic groups activated by the presence of oxidizing agents. The final concentration of this material falls down as the C/O ratio is decreased and below C/O = 0.35 it is not anymore present. It appears that rich premixed flames present two critical C/O ratios: a first one for soot formation and a lower second one for high molecular mass structure formation. Ultra-violet scattering/extinction technique has indicated that the typical average size of these structures is around 4-6 nm and their overall coagulation rate is very low. (literal)
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