Determination of kinetic data for soot oxidation. Modeling of competition between oxygen diffusion and reaction during thermogravimetric analysis☆

Gilot, P.; Bonnefoy, F.; Marcuccilli, F.; Prado, G.

doi:10.1016/0010-2180(93)90054-7

Cited by 94 publications

(74 citation statements)

References 5 publications

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“…The increase in S g was also observed by other researchers using BET measurements [10,11] . The measured S(·) is larger than that predicted by the shrinking core model most likely due to the internal development of the porosity [20] and the opening of occlude pore space [1] .…”

Section: Interpretation Of the Calculated S(·)supporting

confidence: 64%

“…The evolution of S g calculated with the isothermal experimental data for the various temperatures were all quite similar in the current study. Gilot et al [10] found that S g increased more during burning in air at 600℃ and 700℃ than at 800℃. The evolution of S g at the different oxidation temperatures differed due to the different oxygen transport rates.…”

Section: Interpretation Of the Calculated S(·)mentioning

confidence: 98%

“…Thus, TGA is also often used to investigate CB oxidation and to screen catalysts for DPF regeneration [7] . The mass transfer limitations play an important role in the reaction process in the thermogravimetric apparatus [8][9][10][11][12][13][14] . Salvador et al [9] studied the oxidation of 22 high-sulphur petroleum cokes with TGA.…”

Section: Introductionmentioning

confidence: 99%

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Oxidation behavior of a kind of carbon black

Tang

Song

et al. 2009

Sci. China Ser. E-Technol. Sci.

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The DTG curves of a kind of carbon black during TPO tests were found to have multiple peaks with an unusual sharp peak after the main peak. TPO tests with different sample loads, oxygen fractions and heating rates were carried out to study the influence of the experimental parameters on the sharp peak. The results show that the sharp peak is not caused by heat and mass transfer limitations, but by the intrinsic oxidation kinetics of the carbon black. The evolution of the specific surface area during the intrinsic kinetic controlled oxidation process was then analyzed using isothermal oxidation at low temperatures which showed that the sharp peak is caused by the increase of the specific surface area. The pore structure changes greatly influence the oxidation process when the reaction is controlled by the intrinsic kinetics. When there were no heat and mass transfer limitations, the different oxidation processes result in the same specific surface area evolution. thermal analysis, carbon black, multiple peaks, specific surface area

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Section: Interpretation Of the Calculated S(·)supporting

confidence: 64%

Section: Interpretation Of the Calculated S(·)mentioning

confidence: 98%

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Oxidation behavior of a kind of carbon black

Tang

Song

et al. 2009

Sci. China Ser. E-Technol. Sci.

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“…Soot carbon particles are formed from agglomerates of spherules composed of graphite-like microcrystallites. They consist almost exclusively of carbon, with minor amounts of hydrogen and oxygen (Ogren and Charlson, 1983;Andreae and Gelencsér, 2006) and are characterized by a surface area well above 10 m 2 g −1 with maximum values ≥ 100 m 2 g −1 , depending on the combustion source (e.g., Gilot et al, 1993;Popovitcheva et al, 2000;Kandas et al, 2005). Note that this definition excludes any organic species that might be present as a coating on the spherules.…”

Section: Current Terminologymentioning

confidence: 99%

Recommendations for reporting "black carbon" measurements

Petzold¹,

et al. 2013

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Abstract. Although black carbon (BC) is one of the key atmospheric particulate components driving climate change and air quality, there is no agreement on the terminology that considers all aspects of specific properties, definitions, measurement methods, and related uncertainties. As a result, there is much ambiguity in the scientific literature of measurements and numerical models that refer to BC with different names and based on different properties of the particles, with no clear definition of the terms. The authors present here a recommended terminology to clarify the terms used for BC in atmospheric research, with the goal of establishing unambiguous links between terms, targeted material properties and associated measurement techniques.

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“…Since there has been significant uncertainty concerning (19) investigators quoted above. was employed.…”

Section: Application Of Model To Monolithic Wall-flow Filtersmentioning

confidence: 99%

The effects of soot properties on the regeneration behaviour of wall-flow diesel particulate filters

Law

Clarke

Garner

2004

Proceedings of the Institution of Mechanical Engineers, Part D:

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Abstract:In recent years, significant effort has been put into studying the regeneration process of diesel particulate filters (DPFs) either through experiments or modelling. However, less attention is paid to understanding the important influence of soot properties on the regeneration process. In this paper, for the first time, five fundamental soot properties, namely activation energy, frequency factor of the reaction, soot bulk density, porosity and mean soot particulate diameter, are investigated. Sensitivity analyses are carried out for each of these parameters based on a one-dimensional generalized DPF regeneration model. It is found that activation energy is the most important factor in the regeneration process, followed by frequency factor, bulk density, porosity and mean particulate size. In addition, the results also indicate that the concentration of exhaust gas oxygen has a significant influence on the role played by each parameter. This clearly shows the importance of gas diffusion in the regeneration process.

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Determination of kinetic data for soot oxidation. Modeling of competition between oxygen diffusion and reaction during thermogravimetric analysis☆

Cited by 94 publications

References 5 publications

Oxidation behavior of a kind of carbon black

Oxidation behavior of a kind of carbon black

Recommendations for reporting "black carbon" measurements

The effects of soot properties on the regeneration behaviour of wall-flow diesel particulate filters

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Determination of kinetic data for soot oxidation. Modeling of competition between oxygen diffusion and reaction during thermogravimetric analysis☆

Cited by 94 publications

References 5 publications

Oxidation behavior of a kind of carbon black

Oxidation behavior of a kind of carbon black

Recommendations for reporting &quot;black carbon&quot; measurements

The effects of soot properties on the regeneration behaviour of wall-flow diesel particulate filters

Contact Info

Product

Resources

About

Recommendations for reporting "black carbon" measurements