Skip to Main content Skip to Navigation
New interface
Journal articles

Impacts of oxygenated compounds concentration on sooting propensities and soot oxidative reactivity: Application to Diesel and Biodiesel surrogates

Abstract : The aim of this paper is to evaluate the effect of the oxygenated compounds concentration on sooting propensities of Diesel and Biodiesel surrogates and to investigate the oxidative reactivity of soot obtained by combustion of these surrogates using an atmospheric axisymmetric co-flow diffusion flame burner. Methyl decanoate (MD) concentrations from 3 to 30 % (in mole %) are added to a Diesel surrogate made up of a binary mixture of 70 % of n-decane and 30 % of α-methylnaphthalene (α-MN). The sooting propensities of these mixtures are estimated through the Yield Sooting Indices (YSIs) in methane diffusion flames doped with 35,000 ppm of surrogate vapors. The characteristics of the soot volume fraction are extracted using the light extinction method (LEM). Additionally, soot generated from the combustion of the model Diesel and Biodiesel fuels were collected, sampled and characterized using physico-chemical techniques. MD addition is found to reduce sooting tendencies. This decrease is more pronounced when the concentration of oxygenate additives 2 increases. On another side, the oxidative reactivity of soot generated from the diffusion flame burner is found to decrease when the Biodiesel percentage increases. Furthermore, soot generated from the combustion of Diesel and Biodiesel surrogates exhibited different behaviors. Biodiesel-derived soot particles were smaller and less reactive than Diesel-derived ones, the latter displaying less ordered graphite-like structures and higher amorphous carbon concentration.
Document type :
Journal articles
Complete list of metadata

Cited literature [5 references]  Display  Hide  Download

https://hal.sorbonne-universite.fr/hal-01427345
Contributor : Gestionnaire HAL-UPMC Connect in order to contact the contributor
Submitted on : Thursday, January 5, 2017 - 3:44:26 PM
Last modification on : Tuesday, November 16, 2021 - 5:03:46 AM
Long-term archiving on: : Thursday, April 6, 2017 - 2:18:46 PM

File

Abboud_2017_Impacts_of.pdf
Files produced by the author(s)

Identifiers

Citation

Johnny Abboud, Julie Schobing, Guillaume Legros, Jérôme Bonnety, Valerie Tschamber, et al.. Impacts of oxygenated compounds concentration on sooting propensities and soot oxidative reactivity: Application to Diesel and Biodiesel surrogates. Fuel, 2017, 193, pp.241 - 253. ⟨10.1016/j.fuel.2016.12.034⟩. ⟨hal-01427345⟩

Share

Metrics

Record views

139

Files downloads

423