Lobo, Raul F. and Annen, Michael J. and Davis, Mark E. (1992) Zeolite phi: a physical mixture of chabazite and offretite. Journal of the Chemical Society. Faraday Transactions, 88 (18). pp. 2791-2795. ISSN 0956-5000. http://resolver.caltech.edu/CaltechAUTHORS:LOBjcsft92
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Zeolite Phi is synthesized by two methods reported previously. Results from X-ray powder diffraction and scanning electron microscopy suggest that the materials are physical mixtures of chabazite and offretite; one sample has a small amount of phillipsite. The X-ray powder diffraction data from these samples, and those reported previously, are indexed and their unit-cell parameters compare well to those obtained from a physical mixture of chabazite and offretite. These samples show multiple particle morphologies that are indicative of physical mixtures. Zeolite Phi is concluded to be a physical mixture of chabazite and offretite and we suggest that the use of the name zeolite Phi be discontinued.
|Additional Information:||© Royal Society of Chemistry 1992. Paper 2/01700H; Received 31st March, 1992. Support of this work is provided by the NSF Alan T. Waterman Award to M.E.D. We want to thank Dr. John B. Higgins at Mobil Research and Development Corporation, Central Research Laboratory (MRDC-CRL), for reviewing the manuscript and Noel Goeke, also at MRDC-CRL, for collecting the SEMs. We acknowledge Dr. D.E. Cox for assistance in collecting the synchrotron data. The data were collected at X7A beam line, National Synchrotron Light Source, Brookhaven National Laboratory, which is supported by the US Department of Energy, Division of Material Sciences and Division of Chemical Sciences.|
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