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Measuring location, size, distribution, and loading of NiO crystallites in individual SBA-15 pores by electron tomography

By H. Friedrich, J.R.A. Sietsma, P.E. de Jongh, A.J. Verkleij and K.P. de Jong


By the combination of electron tomography with image segmentation, the properties of 299 NiO crystallites contained in 6 SBA-15 pores were studied. A statistical analysis of the particle size showed that crystallites between 2 and 6 nm were present with a distribution maximum at 3 and 4 nm, for the number-weighted and volume-weighted curves, respectively. Interparticle distances between nearest neighbors were 1-3 nm with very few isolated crystallites. In the examined pores, a local loading twice the applied average of 24 wt % NiO was found. This suggests that a very high local loading combined with a high dispersion is achievable

Topics: Molecular biology, Life sciences, Cell biology, Biologie/Milieukunde (BIOL)
Year: 2007
OAI identifier: oai:dspace.library.uu.nl:1874/26608
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