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Synthesis and catalytic application of ceria nanoparticles and ceria-SiC composites

Published online by Cambridge University Press:  31 January 2011

Christian Schrage ,
Emanuel Kockrick  and
Stefan Kaskel
Christian Schrage
Affiliation:
christian.schrage@chemie.tu-dresden.de, Dresden University of Technology, Inorganic Chemistry, Dresden, Germany
Emanuel Kockrick
Affiliation:
emanuel.kockrick@catalyse.cnrs.fr, Institut de recherches sur la catalyse et l’enviroment de lyon, Lyon, France
Stefan Kaskel
Affiliation:
stefan.kaskel@chemie.tu-dresden.de, Dresden University of Technology, Inorganic Chemistry, Dresden, Germany
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Abstract

The synthesis of ceria nanoparticles using an inverse microemulsion technique and precipitation method was investigated. Ceria nanoparticles were synthesized by adding diluted ammonia to a microemulsion consisting of n-heptane, Marlophen NP5 and cerium nitrate. The micelle and particle size were adjustable in the range of 5-12nm by varying the molar ratio of water to surfactant and analyzed by dynamic light scattering (DLS), small angle X-ray scattering (SAXS) and high-resolution transmission electron microscopy (HRTEM). After isolation through precipitation, the nanoparticles were subsequently treated at 100-600 °C. The catalytic activity of particles annealed at 400 and 600 °C were tested in soot combustion reactions and characterized by temperature-programmed oxidation (TPO) indicating a size-dependant activity. To prevent the nanoparticles from aggregation, the microemulsion technique was adopted to integrate the nanoparticles homogeneously into a mesoporous SiC matrix through the use of a preceramic polymer. The obtained composite material was also tested in soot combustion reactions.

Keywords

Cecatalyticnanoscale
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1217: Symposium Y – Catalytic Materials for Energy, Green Processes and Nanotechnology , 2009 , 1217-Y09-07
Copyright
Copyright © Materials Research Society 2010

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References

1 Yao, H.C., Yao, Y.F.Y., J. Catal. 86(2), 254–265 (1984).Google Scholar
2 Miro, E.E., Ravelli, F., Ulla, M.A., Cornaglia, L.M., Querini, C.A., Catal. Today 53(4), 631–638 (1999).Google Scholar
3 Trovarelli, A., Catal. Rev.-Sci. Eng. 38(4), 439–520 (1996).Google Scholar
4 Bai, W., Choy, K.L., Stelzer, N.H.J., J. Schoonman, Solid State Ion. 116(3-4), 225–228 (1999).Google Scholar
5 Madler, L., Stark, W.J., Pratsinis, S.E., J. Mater. Res. 17(6), 1356–1362 (2002).Google Scholar
6 Aneggi, E., Leitenburg, C. de, Dolcetti, G., Trovarelli, A., Catal. Today 114(1), 40–47 (2006).Google Scholar
7 Deshpande, A.S., Pinna, N., Beato, P., Antonietti, M., Niederberger, M., Chem. Mater. 16(13), 2599–2604 (2004).Google Scholar
8 Laha, S.C., Ryoo, R., Chem. Commun. (17), 2138–2139 (2003).Google Scholar
9 Corma, A., Atienzar, P., Garcia, H., Chane-Ching, J.Y., Nat. Mater. 3(6), 394–397 (2004).Google Scholar
10 Masui, T., Fujiwara, K., Peng, Y.M., Sakata, T., Machida, K., Mori, H., Adachi, G., J. Alloys Compd. 269 (1-2), 116–122 (1998).Google Scholar
11 Masui, T., Fujiwara, K., Machida, K., Adachi, G., Sakata, T., Mori, H., Chem. Mater. 9 (10), 2197–2204 (1997).Google Scholar
12 Uskokovic, V., Drofenik, M., Surf. Rev. Lett. 12(2), 239–277 (2005).Google Scholar
13 Althues, H., Kaskel, S., Langmuir 18(20), 7428–7435 (2002).Google Scholar