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The Art of the Possible: An Overview of Catalyst Specimen Preparation Techniques for TEM Studies

Published online by Cambridge University Press:  21 February 2011

Stephen B. Rice
Affiliation:
Exxon Research & Engineering Co., Clinton Township, Route 22 East, Annandale, NJ 08801
Michael M. J. Treacy
Affiliation:
Exxon Research & Engineering Co., Clinton Township, Route 22 East, Annandale, NJ 08801
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Abstract

Obtaining useful microstructural information about catalysts requires appropriate procedures for preparing specimens for the transmission electron microscope. Unfortunately, most descriptions of catalyst specimen preparation are scattered throughout numerous journal articles or are unavailable. Traditional techniques for preparing heterogeneous catalyst powders include primarily dilute dispersion and ultramicrotomy. The advantages and disadvantages of these will be discussed in terms of information obtainable and possible artifacts. In addition, techniques for preparing layered materials, as well as some novel approaches and model systems, will be presented. With these, as with more traditional approaches, the best method for a specific material will be arrived at only through experimentation. Our aim is to describe a variety of possibilities for getting an already synthesized catalyst into the microscope suitably neat, thin, and artifactfree.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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