Bright field and hollow cone dark field electron microscopy of palladium catalysts

L. A. Freeman; A. Howie; M. M.J. Treacy

doi:10.1111/j.1365-2818.1977.tb00057.x

Bright field and hollow cone dark field electron microscopy of palladium catalysts

L. A. Freeman, A. Howie, M. M.J. Treacy

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

The usefulness of hollow cone dark field imaging for the study of Pd catalyst particles on γ‐alumina substrates is investigated. By varying the depth of the specimen in the objective lens field, different Bragg reflections can be conveniently selected. Typically, about 70% of the particles appear in either the 111 or 200 Bragg reflections. Rather more particles can be visible in bright field because of other Bragg reflections as well as absorption effects. Size distributions in bright field and dark field are compared. 1977 Blackwell Science Ltd

Original language	English (US)
Pages (from-to)	165-178
Number of pages	14
Journal	Journal of Microscopy
Volume	111
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2818.1977.tb00057.x
State	Published - Nov 1977
Externally published	Yes

ASJC Scopus subject areas

Pathology and Forensic Medicine
Histology

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T1 - Bright field and hollow cone dark field electron microscopy of palladium catalysts

AU - Freeman, L. A.

AU - Howie, A.

AU - Treacy, M. M.J.

PY - 1977/11

Y1 - 1977/11

N2 - The usefulness of hollow cone dark field imaging for the study of Pd catalyst particles on γ‐alumina substrates is investigated. By varying the depth of the specimen in the objective lens field, different Bragg reflections can be conveniently selected. Typically, about 70% of the particles appear in either the 111 or 200 Bragg reflections. Rather more particles can be visible in bright field because of other Bragg reflections as well as absorption effects. Size distributions in bright field and dark field are compared. 1977 Blackwell Science Ltd

AB - The usefulness of hollow cone dark field imaging for the study of Pd catalyst particles on γ‐alumina substrates is investigated. By varying the depth of the specimen in the objective lens field, different Bragg reflections can be conveniently selected. Typically, about 70% of the particles appear in either the 111 or 200 Bragg reflections. Rather more particles can be visible in bright field because of other Bragg reflections as well as absorption effects. Size distributions in bright field and dark field are compared. 1977 Blackwell Science Ltd

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ER -

Bright field and hollow cone dark field electron microscopy of palladium catalysts

Abstract

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