Unveiling trends in soot nucleation and growth: When secondary ion mass spectrometry meets statistical analysis
| Autor: | Nicolas Nuns, Alessandro Faccinetto, Pascale Desgroux, I.K. Ortega, Eric Therssen, Cristian Focsa, Cornelia Irimiea, Xavier Mercier |
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| Přispěvatelé: | Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM], Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), ANR-11-LABX-0005,Cappa,Physiques et Chimie de l'Environnement Atmosphérique(2011), Physicochimie des Processus de Combustion et de l’Atmosphère - UMR 8522 (PC2A), DMPE, ONERA, Université Paris Saclay (COmUE) [Palaiseau], ONERA-Université Paris Saclay (COmUE), Institut Michel Eugène Chevreul - FR 2638 (IMEC), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université d'Artois (UA)-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centrale Lille Institut (CLIL) |
| Rok vydání: | 2019 |
| Předmět: |
Work (thermodynamics)
Materials science Resolution (mass spectrometry) Nucleation 02 engineering and technology 010402 general chemistry Combustion medicine.disease_cause 01 natural sciences Reaction coordinate COMBUSTION [SPI]Engineering Sciences [physics] medicine General Materials Science Diffusion (business) ComputingMilieux_MISCELLANEOUS [PHYS]Physics [physics] [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] General Chemistry 021001 nanoscience & nanotechnology Soot 0104 chemical sciences Secondary ion mass spectrometry 13. Climate action Chemical physics 0210 nano-technology SUIE SPECTROSCOPIE DE MASSE |
| Zdroj: | Carbon Carbon, 2019, 144, pp.815-830. ⟨10.1016/j.carbon.2018.12.015⟩ Carbon, 2018, 144, pp.815-830. ⟨10.1016/j.carbon.2018.12.015⟩ Carbon, Elsevier, 2018, 144, pp.815-830. ⟨10.1016/j.carbon.2018.12.015⟩ |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2018.12.015 |
| Popis: | International audience; At the present day, ultrafine soot particles have become the object of increasing attention due to their well-documented adverse effects on human health and climate. In particular, understanding soot nucleation is one of the most challenging problems toward a more controlled and cleaner combustion. Detailed information on the chemistry of nascent soot particles (NSPs) is expected to provide clues on the soot formation and growth reaction pathways. Herein, the early steps of soot formation in flames are addressed by investigating the chemical composition of NSPs and their molecular precursors by secondary ion mass spectrometry. The originality of this work lies on the combination of several factors that include: two different approaches to gain access to soot nucleation in premixed flames (analysis of a nucleation flame in which NSPs nucleate all along the reaction coordinate without growing in size) and in diffusion flames (separation of the precursors and soot regions); a sampling procedure that allows a rough separation of the condensable gas phase from soot particles; a large database of collected samples and high mass resolution that enable the use of an improved data reduction protocol based on hierarchical cluster analysis and principal component analysis for the data mining and interpretation. |
| Databáze: | OpenAIRE |
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