Two nanostructured mixed oxide catalysts (the CoCr2O4 spinel and the LiCrO2 delafossite) have been recently developed for diesel soot combustion. The catalysts have been deposited via in situ combustion synthesis over SiC wallflow trap by CTI (Salindres, F). Bench tests proved that, after soot loading, both the developed traps enable a faster and more complete regeneration at 550 °C than the non-catalysed trap. However, a specific study on the particles distribution after the SiC trap, carried out via SMPS analysis, showed that secondary nanoparticles (<20 nm) are emitted during the regeneration promoted by the highly-active CoCr2O4 catalytic trap, as opposed to the LiCrO2-catalysed and the virgin counter parts. This phenomenon has been investigated vs. the regeneration temperature and some sampling conditions so as to draw preliminary indications on the nature of these undesired particles.
Similar content being viewed by others
References
L. Shirnamé-Moré, Diesel Exhaust: A Critical Analysis of Emissions, Exposure, and Health Effects, A Special Report of the Institute’s Diesel Working Group, Health Effects Institute, Cambridge, MA, pp. 221–242 (1995)
D.M. Brown M.R. Wilson W. MacNee V. Stone K. Donaldson (2001) Toxicol. Appl. Pharmacol. 175 191 Occurrence Handle11559017 Occurrence Handle10.1006/taap.2001.9240 Occurrence Handle1:CAS:528:DC%2BD3MXmsl2nu7o%3D
G. Oberdörster Z. Sharp V. Atudorei A. Elder R. Gelein W. Kreyling C. Cox (2004) Inhalation Toxicol. 16 437 Occurrence Handle10.1080/08958370490439597
C.M. Somers B.E. McCarry F. Malek J.S. Quinn (2004) Science 304 1008–1010 Occurrence Handle15143280 Occurrence Handle10.1126/science.1095815 Occurrence Handle2004Sci...304.1008S Occurrence Handle1:CAS:528:DC%2BD2cXjvVCgsro%3D
T. Kawatani, K. Mari, I. Fukano, K. Sugakawa and T. Koyama, SAE Paper no. 932654 (1993)
K. Slodowske, Proceedings of the SAE Panel Presentation at SAE Fuels and Lubrificant Meeting, Detroit, 20 October (1993)
H. Hiroyasu, M. Arai and H. Nakanishi, SAE Paper no. 800252 (1980)
B.A.A.L. Setten ParticleVan M. Makkee J.A. Moulijn (2001) Catal. Rev.- Sci. Eng. 43 489 Occurrence Handle10.1081/CR-120001810
A.G. Konstandopoulos et␣al., SAE paper no. 2004-01-0694 (2004)
D. Fino N. Russo C. Badini G. Saracco V. Specchia (2003) AIChE J. 49 2173 Occurrence Handle10.1002/aic.690490824 Occurrence Handle1:CAS:528:DC%2BD3sXmsFGqu7o%3D
D. Fino N. Russo G. Saracco V. Specchia (2003) J. Catal. 217 367 Occurrence Handle1:CAS:528:DC%2BD3sXktVKjsrk%3D
N. Russo D. Fino G. Saracco V. Specchia (2005) J. Catal. 229 459 Occurrence Handle10.1016/j.jcat.2004.11.025 Occurrence Handle1:CAS:528:DC%2BD2MXht1Ojs7Y%3D
E. Cauda D. Mescia D. Fino G. Saracco V. Specchia (2005) Ind. Eng. Chem. Res 44 9549 Occurrence Handle10.1021/ie050250u Occurrence Handle1:CAS:528:DC%2BD2MXksVersbw%3D
A. Civera M. Pavese G. Saracco V. Specchia (2003) Catal. Today 83 199 Occurrence Handle10.1016/S0920-5861(03)00220-7 Occurrence Handle1:CAS:528:DC%2BD3sXlvFGntbY%3D
D. Fino P. Fino G. Saracco V. Specchia (2003) Chem. Eng. Sci. 58 951 Occurrence Handle10.1016/S0009-2509(02)00633-4 Occurrence Handle1:CAS:528:DC%2BD3sXhsVSkt78%3D
M. Kostoglou and A.G. Konstandopoulos (2003) 3rd Meeting of the Greek Section of the Combustion Institute, Patras, 7-8 November, 2003
S.J. Harris M.M. Maricq (2002) J. Aerosol Science 33 935 Occurrence Handle10.1016/S0021-8502(02)00045-9 Occurrence Handle1:CAS:528:DC%2BD38XjsFKrsL8%3D
U. Matter H.C. Siegmann H. Burtscher (1999) Environ. Sci. Technol. 33 1946 Occurrence Handle10.1021/es981095w Occurrence Handle1:CAS:528:DyaK1MXisFGlsbg%3D
U. Matter H.C. Siegmann M. Kasper H. Burtscher (1999) J. Aerosol. Sci. 30 471 Occurrence Handle10.1016/S0021-8502(99)80247-X
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Cauda, E., Fino, D., Saracco, G. et al. Secondary nanoparticle emissions during diesel particulate trap regeneration. Top Catal 42, 253–257 (2007). https://doi.org/10.1007/s11244-007-0186-y
Issue Date:
DOI: https://doi.org/10.1007/s11244-007-0186-y