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High Spatial Resolution Microanalysis of Catalyst Particles

Published online by Cambridge University Press:  25 February 2011

C. E. Lyman
C. E. Lyman*
Affiliation:
Lehigh University, Department of Metallurgy and Materials Engineering, Whitaker Lab #5, Bethlehem, Pennsylvania 18015
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Abstract

Qualitative and quantitative analysis of small catalyst particles is possible in the analytical electron microscope down to analysis areas on the order of 10 nm in diameter. The location of elements in the image field can be determined either by placing the electron probe on a particu-lar image feature or by forming a digital x-ray image showing the distribu-tion of various elements. In either case analysis of specimens of well defined thickness such as microtomed thin sections preserves spatial relationships in catalyst particles and simplifies interpretation of single element x-ray images. Electron energy loss spectroscopy can be combined with x-ray spectroscopy to reduce the ambiguity in x-ray spectra caused by spurious x-rays generated by electrons scattered from the analy-sis area to regions of high concentrations of elements removed from the analysis area.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 62: Symposium Q – Materials Problem Solving with the Transmission Electron Microscope , 1985 , 403
Copyright
Copyright © Materials Research Society 1986

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