Soot oxidation

Wal, Randy L. Vander; Tomasek, Aaron J.

doi:10.1016/s0010-2180(03)00084-1

Cited by 429 publications

(90 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, they found that the change in the H/C ratio is smaller for methane soot when compared to that of other fuels. In another study, Vander Wal and Tomasek [71], also using HRTEM, reported that the oxidation rate of nascent soot depends upon the nanostructure, for example, the length of graphene segments, curvature, and its orientation. Ishiguro et al [72], Song et al [73], Müller et al [74], also showed a relation between the monomers nanostructure and the soot oxidation from different fuel sources.…”

Section: Resultsmentioning

confidence: 99%

Effect of Thermodenuding on the Structure of Nascent Flame Soot Aggregates

et al. 2017

View full text Add to dashboard Cite

Abstract:The optical properties (absorption and scattering) of soot particles depend on soot size and index of refraction, but also on the soot complex morphology and the internal mixing with materials that can condense on a freshly emitted (nascent) soot particle and coat it. This coating can affect the soot optical properties by refracting light, or by changing the soot aggregate structure. A common approach to studying the effect of coating on soot optical properties is to measure the absorption and scattering coefficients in ambient air, and then measure them again after removing the coating using a thermodenuder. In this approach, it is assumed that: (1) most of the coating material is removed; (2) charred organic coating does not add to the refractory carbon; (3) oxidation of soot is negligible; and, (4) the structure of the pre-existing soot core is left unaltered, despite the potential oxidation of the core at elevated temperatures. In this study, we investigated the validity of the last assumption, by studying the effect of thermodenuding on the morphology of nascent soot. To this end, we analyzed the morphological properties of laboratory generated nascent soot, before and after thermodenuding. Our investigation shows that there is only minor restructuring of nascent soot by thermodenuding.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Thermodenuding on the Structure of Nascent Flame Soot Aggregates

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Since a carbon atom at an edge site is much more reactive than one in the basal plane of a graphene layer, a soot with many populated edge sites has a higher reactivity [1][2][3]. This edge site population density can be increased by decreasing the graphene layer size and orderliness within the particle and by a more amorphous arrangement within the primary particle.…”

Section: Introductionmentioning

confidence: 99%

Examination of the oxidation behavior of biodiesel soot

Song

Alam

Boehman

et al. 2006

Combustion and Flame

400

199

View full text Add to dashboard Cite

“…Recently, it was reported that the microstructure of soot particles depends on synthesis conditions such as burning temperature, time, and initial fuel identity [5]. Soots from pyrolysis of benzene, ethanol, and acetylene exhibit different microstructures and correspondingly oxidation rates that can differ by nearly fivefold.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and oxidation behaviour of Euro IV diesel engine soot: a comparative study with synthetic model soot substances

et al. 2004

View full text Add to dashboard Cite

In this study, the microstructure and oxidation behaviour of soot from the raw exhaust of a Euro IV test heavy duty (HD) diesel engine is investigated and compared to that of spark discharge soot and hexabenzocoronene (HBC, C 42 H 18 ). We find a microstructure-controlled reactivity toward oxidation of all three samples in 5% O 2 in N 2 . The spark discharge soot with its fine primary particles and fullerenoid structure has an onset temperature of 423 K for combustion, while the hexabenzocoronene with its well-ordered crystallites has a high onset temperature of 773 K. Due to an improved combustion process in the Euro IV HD diesel engine, the soot emitted consists of more fullerenoid-like or onion-like particles agglomerated in a chain-like secondary structure. The onset temperature of the Euro IV HD engine soot combustion is 573 K. Oxidation of the three samples produces only CO 2 and H 2 O. The different H 2 O production profiles can be assigned to the functionalised surface of the samples and depend on the soot structures and preparation route.

show abstract

Soot oxidation

Cited by 429 publications

References 30 publications

Effect of Thermodenuding on the Structure of Nascent Flame Soot Aggregates

Effect of Thermodenuding on the Structure of Nascent Flame Soot Aggregates

Examination of the oxidation behavior of biodiesel soot

Microstructure and oxidation behaviour of Euro IV diesel engine soot: a comparative study with synthetic model soot substances

Contact Info

Product

Resources

About