Structures cont Identification

The identification of phase grading from XRD alone is not possible microscopic methods (Chui and Chan, 2005 Dutoit et al., 1995 Hills et al., 1999 Prakash et al., 2005) are needed to determine the locations of the phases that are identified. It is critical to compare the same active state of the catalyst in XRD and in microscopic investigations, as core-shell structures may be the result of phase segregation during sample preparation and transfer from a metastable statistical mix (Conte et al., 2006 Havecker et al., 2003 Hutchings, 2004 Kiely et al., 1996) into the more stable graded phase mixture (Frenkel et al., 2001 Fu et al., 2005 Hills et al., 1999). 

Conte, J. P. and Kumar, S. Statistical system identification of structures using ARMA models. In Proceedings of 7th ASCE Specialty Conference on Probabilistic Mechanics and Structural Reliability (Worcester, MA, 1996), pp. 142-145. 

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