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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Demirdjian, Benjamin
Centre Interdisciplinaire de Nanoscience de Marseille
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2016Impact of the 0.1% fuel sulfur content limit in SECA on particle and gaseous emissions from marine vesselscitations
- 2015Nanofabrication of optical structures (filters, resonators and sensors)
- 2011Neutron diffraction study of water freezing on aircraft engine combustor soot
- 2009Ship particulate pollutants: Characterization in terms of environmental implicationcitations
- 2009Ship particulate exhaust characterization: microstructure, elemental composition, surface chemistry
- 2007Heterogeneities in the Microstructure and Composition of Aircraft Engine Combustor Soot: Impact on the Water Uptakecitations
- 2005Vapor Pressure and Solid Phases of Methanol below Its Triple Point Temperaturecitations
- 2004Aircraft engine soot as ice nuclei in contrail and cirrus formation
- 2004Aircraft engine soot as contrail nucleicitations
Places of action
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article
Neutron diffraction study of water freezing on aircraft engine combustor soot
Abstract
The study of the formation of condensation trails and cirrus clouds on aircraft emitted soot particles is important because of its possible effects on climate. In the present work we studied the freezing of water on aircraft engine combustor (AEC) soot particles under conditions of pressure and temperature similar to the upper troposphere. The microstructure of the AEC soot was found to be heterogeneous containing both primary particles of soot and metallic impurities (Fe, Cu, and Al). We also observed various surface functional groups such as oxygen-containing groups, including sulfate ions, that can act as active sites for water adsorption. Here we studied the formation of ice on the AEC soot particles by using neutron diffraction. We found that for low amount of adsorbed water, cooling even up to 215 K did not lead to the formation of hexagonal ice. Whereas, larger amount of adsorbed water led to the coexistence of liquid water (or amorphous ice) and hexagonal ice (Ih); 60% of the adsorbed water was in the form of ice Ih at 255 K. Annealing of the system led to the improvement of the crystal quality of hexagonal ice crystals as demonstrated from neutron diffraction.