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Electron Microscopy Study of Morphology and Composition of a Ferrisilicate Catalyst

Published online by Cambridge University Press:  28 February 2011

Roseann Csencsits ,
Ronald Gronsky ,
Vinayan Nair  and
Rosemarie Szostak
Roseann Csencsits
Affiliation:
Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence, Berkeley Laboratory, and Materials Science and Mineral Engineering Department, University of California, Berkeley, CA 94720
Ronald Gronsky
Affiliation:
Center for Advanced Materials, Materials and Chemical Sciences Division, Lawrence, Berkeley Laboratory, and Materials Science and Mineral Engineering Department, University of California, Berkeley, CA 94720
Vinayan Nair
Affiliation:
Union Carbide Company, Tarrytown, NY
Rosemarie Szostak
Affiliation:
Zeolite Research Program, Georgia Tech Research Institute, Georgia Institute of Technology, Atlanta, GA 30332
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Abstract

The effects of various synthesis conditions on the structure and composition of ferrisilicate analogs of zeolite ZSM-5 were considered. Scanning electron microscopy (SEM) was used to determine the particles size distributions and morphologies. Particle sizes vary from tenths of a micron to several microns, depending on degree of agitation during crystal growth, while morphology is additionally dependent on the concentration of iron in the gel during crystallization.

X-ray emissive spectroscopy (XES) performed in the transmission electron microscope (TEM) was used to determine their composition variation. The distribution of iron amongst the crystals is more homogeneous if the gel is stirred and it does not depend on particle size.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 111: Symposium O – Microstructure and Properties of Catalysts , 1987 , 155
Copyright
Copyright © Materials Research Society 1988

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