Nano-organic carbon and soot particle measurements in a laminar ethylene diffusion flame

Date

2004-01-01

Author

D'anna, A.
Rolando, A.
Allouis, Christophe Gerard
Minutolo, P.
D'alessio, A.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

137
views

0
downloads

The formation of carbonaceous particulates in a co-flow laminar diffusion flame was studied using UV-visible spectroscopy and laser scattering/extinction techniques for measurements of volume fraction and particle sizes. Measurements were performed in a non-smoking ethylene-air flame at 1 atm. The mean size of nano organic carbon particles was ∼ 2-3 nm, which was in agreement with previous results obtained in rich premixed flames with equivalence ratios across the soot formation threshold. Nano-organic carbon particles were formed in the fuel side of the flame front closer to the flame center line than soot particles and with a concentration level comparable to that of soot suggesting a role mainly responsible for soot formation. The intermediate spatial location of these particles between the fuel- and soot-containing regions and their high concentration in flame suggested that soot formation is just the consequence of coagulation of NOC particles without a major role of surface growth in the soot loading process.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=10344225632&origin=inward
https://hdl.handle.net/11511/89890

Conference Name

30th International Symposium on Combustion, Abstracts of Symposium Papers

Collections

Department of Mechanical Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Nano-organic carbon and soot particle measurements in a laminar ethylene diffusion flame D'Anna, A; Rolando, A; Allouis, Christophe Gerard; Minutolo, P; D'Alessio, A (2005-01-01) The formation of carbonaccous particulates in a co-flow laminar diffusion flame has been studied using UV-visible spectroscopy and laser scattering/extinction techniques for measurements of volume fractions and particle sizes. Measurements were performed in a non-smoking ethylene-air flame at atmospheric pressure. UV-visible spectroscopy allowed the identification of two classes of particles: soot particles, which absorb light in the whole spectral range and nano-organic carbon particles (NOC) which are tra...
Optoelectrochemical properties of the copolymer of 2,5-di(4-methylthiophen-2-yl)-1-(4-nitrophenyl)-1H-pyrrole monomer with 3,4-ethylenedioxythiophene AK, Metin; Tanyeli, Cihangir; Akhmedo, Dris M.; Toppare, Levent Kamil (Elsevier BV, 2008-04-30) Copolymer of 2,5-di(4-methylthiophen-2-yl)-1-(4-nitrophenyl)-1H-pyrrole (MTNP) with 3,4-ethylene dioxythiophene (EDOT) was electro-chemically synthesized and characterized via cyclic voltammetry, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy, conductivity measurements. Spectroelectrochemical investigations showed that resulting copolymer film has distinct electrochromic properties. It has five different colors (dark purple, red, light grey, green, blue). At the neutral state m due to...
Photoelectronic and electrical properties of Tl2InGaS4 layered crystals Qasrawi, A. F.; Hasanlı, Nızamı (2007-01-01) Tl2InGaS4 layered crystals are studied through the dark electrical conductivity, space charge limited current and illumination- and temperature-dependent photoconductivity measurements in the temperature regions of 220-350 K, 300-400 K and 200-350 K, respectively. The space charge limited current measurements revealed the existence of a single discrete trapping level located at 0.44 eV. The dark electrical conductivity showed the existence of two energy levels of 0.32 eV and 0.60 eV being dominant above and...
Optical properties of TlGaxIn1-xSe2-layered mixed crystals (0.5 <= x <= 1) by spectroscopic ellipsometry, transmission, and reflection IŞIK, MEHMET; Delice, S.; Hasanlı, Nızamı (2014-01-01) The layered semiconducting TlGaxIn1-xSe2-mixed crystals (0.5 <= x <= 1) were studied for the first time by spectroscopic ellipsometry measurements in the 1.2-6.2 eV spectral range at room temperature. The spectral dependence of the components of the complex dielectric function, refractive index, and extinction coefficient were revealed using an optical model. The interband transition energies in the studied samples were found from the analysis of the second-energy derivative spectra of the complex dielectri...
TL and OSL studies on gallium sulfide (GaS) single crystals Isik, M.; YÜKSEL, MEHMET; TOPAKSU, MUSTAFA; Hasanlı, Nızamı (Elsevier BV, 2020-09-01) Gallium sulfide (GaS) single crystals were investigated using thermoluminescence (TL) and optically stimulated luminescence (OSL) measurements. TL experiments performed in the room temperature (RT)-450 °C range presented a glow curve consisting in six single discrete peaks. Analyses of TL glow curve by computerized glow curve deconvolution method showed that the trapping centers responsible for peaks are located at 0.98, 1.09, 1.15, 1.76, 1.87 and 1.90 eV. The order of kinetics found between 1 and 2 indicat...

Citation Formats

A. D’anna, A. Rolando, C. G. Allouis, P. Minutolo, and A. D’alessio, “Nano-organic carbon and soot particle measurements in a laminar ethylene diffusion flame,” presented at the 30th International Symposium on Combustion, Abstracts of Symposium Papers, Chicago, IL, Amerika Birleşik Devletleri, 2004, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=10344225632&origin=inward.