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Investigation of the electronic structure of an iron-titanium nitride ammonia synthesis catalyst

Authors
Journal
Applied Surface Science
0169-4332
Publisher
Elsevier
Publication Date
Volume
25
Identifiers
DOI: 10.1016/0169-4332(86)90024-3

Abstract

Abstract An electron spectroscopic study of a nitrided FeTi material has been carried out. Similarly prepared samples have shown enhanced catalytic activity for NH 3 production [E. Schwab and E. Wicke, Z. Physik. Chem. (NF) 122 (1980) 217], which was attributed to small iron particles embedded in a TiN matrix. Electron spectra are consistent with this interpretation, suggesting the breakdown of the original FeTi intermetallic lattice, and the formation of TiN. No significant electron transfer between the iron particles and the TiN lattice is observed in this study. These observations rule out an electronic factor as the source of the enhanced ammonia synthesis activity of nitrided FeTi.

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