Determination of the distribution of chromium oxidation states in reduced Cr/Al 2 O 3 catalysts from XPS by factor analysis and curve fitting

Principal component analysis (PCA) and target testing (TT) were performed on a series of reduced 2.5 wt.% Cr/Al 2 O 3 catalysts to determine the number, positions, shapes and relative spectral compositions (i.e. Cr oxidation states) in Cr 2p spectra as monitored by ESCA. The results from PCA indicat...

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Veröffentlicht in:	Surface and interface analysis 1993-10, Vol.20 (11), p.901-908
Hauptverfasser:	Scierka, Stephanie J., Proctor, Andrew, Houalla, Marwan, Fiedor, Joseph N., Hercules, David M.
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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