NDLI: Studying the surface reaction between NiO and Al2O3 via total reflection EXAFS (ReflEXAFS).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Costanzo, Tommaso Benzi, Federico Ghigna, Paolo Pin, Sonia Spinolo, Giorgio D'acapito, Francesco
Description	Country affiliation: Italy Author Affiliation: Costanzo T ( INSTM and Department of Chemistry, University of Pavia, I27100 Pavia, Italy.); Benzi F ( School of Science and Technology, Geology Division, University of Camerino, I-62032 Camerino, Italy.); Ghigna P ( INSTM and Department of Chemistry, University of Pavia, I27100 Pavia, Italy.); Pin S ( General Energy Research (ENE), Laboratory for Bioenergy and Catalysis, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland.); Spinolo G ( INSTM and Department of Chemistry, University of Pavia, I27100 Pavia, Italy.); d'Acapito F ( CNR-IOM-OGG, c/o ESRF, GILDA-CRG, BP 220, F-38043 Grenoble Cedex, France.)
Abstract	The reaction between NiO and (0001)- and (1102)-oriented Al2O3 single crystals has been investigated on model experimental systems by using the ReflEXAFS technique. Depth-sensitive information is obtained by collecting data above and below the critical angle for total reflection. A systematic protocol for data analysis, based on the recently developed CARD code, was implemented, and a detailed description of the reactive systems was obtained. In particular, for (1102)-oriented Al2O3, the reaction with NiO is almost complete after heating for 6âh at 1273âK, and an almost uniform layer of spinel is found below a mixed (NiO + spinel) layer at the very upmost part of the sample. In the case of the (0001)-oriented Al2O3, for the same temperature and heating time, the reaction shows a lower advancement degree and a residual fraction of at least 30% NiO is detected in the ReflEXAFS spectra.
File Format	HTM / HTML
ISSN	09090495
Issue Number	Pt 2
Journal	Journal of Synchrotron Radiation
Volume Number	21
e-ISSN	16005775
Language	English
Publisher	IUCr
Publisher Date	2014-03-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Radiology
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Instrumentation Radiation

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