1995
DOI: 10.1515/zna-1995-1107
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Surface Growth and Oxidation of Soot Particles under Flame Conditions

Abstract: Dedicated to Prof. Dr. Ewald Wicke on the occasion of his 80th birthday Surface growth and oxidation of soot particles is investigated in premixed counter flow flames. Surface growth rates and soot oxidation rates can be evaluated from the measured appearance rates of soot and the calculated surface growth rates derived from the HACA-mechanism. The depen dence of surface growth rates and soot oxidation rates on composition of the gas phase, temperature and "surface concentration" is discussed. A mechanism of s… Show more

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Cited by 13 publications
(5 citation statements)
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“…At the prevailing large time scales for the oxidation of soot diffusion rates of oxygen into the structures of the primary particles well competes with chemical reaction rates. Similar behavior has also been observed in the oxidation of soot catalyzed with Fe 2 O 3 under similar conditions (Reichert et al 2010) and in flames (Schäfer et al 1995). Fringe length distribution of primary particles from i-OCT3 and primary particle size distribution at stepwise oxidation Similar interesting features can be extracted from Raman scattering results given in Fig.…”
Section: Stepwise Oxidation Of Sootsupporting
confidence: 80%
“…At the prevailing large time scales for the oxidation of soot diffusion rates of oxygen into the structures of the primary particles well competes with chemical reaction rates. Similar behavior has also been observed in the oxidation of soot catalyzed with Fe 2 O 3 under similar conditions (Reichert et al 2010) and in flames (Schäfer et al 1995). Fringe length distribution of primary particles from i-OCT3 and primary particle size distribution at stepwise oxidation Similar interesting features can be extracted from Raman scattering results given in Fig.…”
Section: Stepwise Oxidation Of Sootsupporting
confidence: 80%
“…Most previous studies on soot generated in flames and/or diesel engines have relied on collecting and/or immobilizing the soot 14,17,18 or on light scattering within a flame environment. [19][20][21] The majority of previous studies have considered how oxidation depends on temperature. Some work has been published on the order of the oxidation reaction with respect to oxygen partial pressure.…”
Section: Introductionmentioning
confidence: 99%
“…Carbon filaments, , carbon or graphite rods, , graphite, char, and carbon blacks have been used as soot surrogates. Most previous studies on soot generated in flames and/or diesel engines have relied on collecting and/or immobilizing the soot ,, or on light scattering within a flame environment. The majority of previous studies have considered how oxidation depends on temperature. Some work has been published on the order of the oxidation reaction with respect to oxygen partial pressure. ,,, Most of these studies were conducted at temperatures above 1500 °C, at which temperatures the kinetics gradually shift from reaction- to diffusion-limited .…”
Section: Introductionmentioning
confidence: 99%
“…More recent work has used various manufactured carbon blacks as soot models and employed a variety of techniques including shock tubes, thermogravimetric analysis, , and immobilized beds . Studies using real laboratory-generated flame or diesel soot have been confined to techniques that rely on collecting and immobilizing the soot, , or light scattering or absorption within a flame environment …”
Section: Introductionmentioning
confidence: 99%