N Ichikuni et al 2009 J. Phys.: Conf. Ser. 190 012169 doi:10.1088/1742-6596/190/1/012169
N Ichikuni, Y Wakai, T Hara and S Shimazu
Show affiliationsSiO2-Supported Fe-NbN catalysts were prepared by temperature programmed reaction (TPR) method from Fe-Nb/SiO2 oxide precursor under a N2-H2 gas stream. As raising the intermediate temperature-maintaining (ITM) step temperature during the TPR, Fe species in the Fe-Nb/SiO2 catalyst was reduced to zero-valent, confirmed by Fe K-edge XAFS analysis. Although the Fe-Fe coordination number increased by elevating ITM temperature, the size of Fe cluster was still small. The Nb-N coordination number became larger, as higher the ITM temperature. The reduced Fe species effectively assisted the nitridation process of Nb.
82.65.+r Surface and interface chemistry; heterogeneous catalysis at surfaces
81.20.-n Methods of materials synthesis and materials processing
Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Issue 1 (2009)
N Ichikuni et al 2009 J. Phys.: Conf. Ser. 190 012169
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