The Study of Heterogeneous Catalysts by High-Resolution Transmission Electron MicroscoDV |
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Authors: | Abhaya K Datye David J Smith |
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Affiliation: |
a Department of Chemical and Nuclear Engineering, University of New Mexico Albuquerque, New Mexico
b Center for Solid State Science and Department of Physics, Arizona State University, Tempe, Arizona |
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Abstract: | Advances in instrumentation have made it possible in recent years to study the microstructure of inorganic materials at atomic resolution using the technique of high-resolution electron microscopy (HREM). Details of instrumentation have been described elsewhere l], and applications and trends for HREM have recently been reviewed 2]. Although HREM is primarily a technique for studying bulk defects, it is increasingly also being applied in the profile-imaging mode to derive information about surfaces 3]. The high spatial resolution of the electron microscope makes it a valuable tool for the characterization of heterogeneous catalysts. This is evidenced by the growing number of studies wherein electron micrographs are being used to describe the morphology of a particular catalyst. Profile imaging is proving particularly useful in this regard for following changes in surface structure as a function of treatment conditions 4]. |
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