Characterization and reactivity with NO and O 2 of diesel engine soot and analogues Financial support: • COST Action CM0901, Obra Social CAI through Programa Europa and Valeo Térmico,S.A. • European Social Fund, MINECO (Project CTQ2012-34423) and Aragón Government • Ministero dello Sviluppo Economico within the “Accordo di Programma CNR-MSE, Gruppo Tematico Carbone Pulito-Fondo and NIPS-Seed Project 2009-IIT
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Characterization and reactivity with NO and O2 of diesel engine soot and analogues
Financial support:
• COST Action CM0901, Obra Social CAI through Programa Europa and Valeo Térmico,S.A.
• European Social Fund, MINECO (Project CTQ2012-34423) and Aragón Government
• Ministero dello Sviluppo Economico within the “Accordo di Programma CNR-MSE, Gruppo Tematico Carbone Pulito-Fondo and NIPS-Seed Project 2009-IIT
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
1. Introduction and objectives
2. Characterization techniques and reactivity experiments
3. Results
3.1 Characterization of the different kinds of soot
3.2 Reactivity of soot towards O2 and NO
4. Conclusions
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
1.1. Introduction and objectivesIntroduction and objectives
2. Characterization techniques and reactivity experiments
3. Results
3.1 Characterization of the different kinds of soot
3.2 Reactivity of soot towards O2 and NO
4. Conclusions
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
• Improved quality and reformulation of diesel fuels
• Interaction of soot with gases like oxygen or NOx.
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
Printex-U PUPUSRM1650b SRMSRM
DS6DS6DS9DS9
Diesel soot DS14DS14DS17DS17DS19DS19
Soot Soot characterizationcharacterization
andandreactivity reactivity
(with O2 and NO)
EGR from an engine
bench
EGR from vehicle
(NIST)
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
•• Soot characterizationSoot characterization: elemental analysis, BET surface area, FESEM, TEM, FTIR-ATR, TGA, ICP-MS, GS-MS, UV-vis and fluorescence spectroscopy.
• The study of the reactivity of different reactivity of different kinds of soot and analogueskinds of soot and analogues: experiments of oxidation and NO interaction.
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
1. Introduction and objectives
2.2. Characterization techniques and reactivity experimentsCharacterization techniques and reactivity experiments
3. Results
3.1 Characterization of the different kinds of soot
3.2 Reactivity of soot towards O2 and NO
4. Conclusions
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
GCGC--MSMS confirmed the presence of aliphatic chains (confirmed the presence of aliphatic chains (CC1010 -- CC2323) and some PAHs (2) and some PAHs (2--4 rings)4 rings)
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
FESEMFESEM
-- Inner coreInner core: fine particles and random carbon layers with disordered structures.
- Outer shellOuter shell: microcrystallites with periodic orientation.
TEMTEMPU SRM
DS9 DS17
Mean diameter (nm)Mean diameter (nm)
FESEMFESEM TEMTEM
PU 37 40SRM 32 31DS9 27 24DS17 24 25
PU SRM
DS9 DS17
- Particles joined together to create particle aggregates of different sizes.
Structure of DS17DS17 more typical to char or amorphousamorphous samples (also found by XRDXRD and
Raman spectroscopy), Raman spectroscopy), confirming TG trend (less compact and more defective structure)
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”
SootSoot--OO22 reactivityreactivity
0 1 2 3 4 5 6 7 8 90
100200300400500600700800900
1000
CO
(ppm
)
Wc (mg)
PU SRM DS6 DS9 DS14 DS17 DS19
0 1 2 3 4 5 6 7 8 90
50
100
150
200
250
300
350
400
CO
2 (ppm
)
WC (mg)
PU SRM DS6 DS9 DS14 DS17 DS19
O2 (g) + bC (s) cCO (g) + dCO2 (g)
COST ACTION CM0901. Joint Working Group Meeting “Soot and PAHs”