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Changes in the Unit Cell Dimensions of ZSM-5 Produced by the Adsorption of Organic Liquids*

Published online by Cambridge University Press:  06 March 2019

S. S. Pollack ,
R.J. Gormley  and
E. L. Wetzel
S. S. Pollack
Affiliation:
U.S. Department of Energy Pittsburgh Energy Technology Center P.O. Box 10940 Pittsburgh, PA 15236
R.J. Gormley
Affiliation:
U.S. Department of Energy Pittsburgh Energy Technology Center P.O. Box 10940 Pittsburgh, PA 15236
E. L. Wetzel
Affiliation:
U.S. Department of Energy Pittsburgh Energy Technology Center P.O. Box 10940 Pittsburgh, PA 15236
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Extract

The adsorption of liquids in 2eolites has been a widely studied phenomenon, and with the development of ZSM-5, considerable work has been carried out on this zeolite, However, few articles have been published dealing with changes in the X-ray diffraction patterns when the zeolite pores contain adsorbed molecules. The purpose of this paper is to report changes in the X-ray diffraction pattern of ZSM-5 after mixing it with various organic solvents.

This work began after studies of both deactivated and partially deactivated ZSM-5 catalysts showed that their X-ray diffraction patterns changed in intensities and peak positions after use in microreactor studies. If coke or hydrocarbons were causing the above changes, as postulated, would hydrocarbons adsorbed in ZSM-5 produce the same changes? Simpson and Steinfink showed that the low-angle lines of faujasite decreased in intensity after the adsorption of m-dichlorobenzene.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 29: Thirty-Fourth Annual Conference on Applications of X-ray Analysis, August 5-9, 1985 , 1985 , pp. 257 - 264
Copyright
Copyright © International Centre for Diffraction Data 1985

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Footnotes

*

The U.S. Government's right to retain a non-exclusive royalty-free license in and to the copyright covering of this paper, for governmental purposes, is acknowledged.

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