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Experimental and calculated X-ray powder diffraction data for cesium titanium silicate, CsTiSi2O6.5: A new zeolite

Published online by Cambridge University Press:  10 January 2013

David E. McCready ,
M. Lou Balmer  and
Keith D. Keefer
David E. McCready
Affiliation:
Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352
M. Lou Balmer
Affiliation:
Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352
Keith D. Keefer
Affiliation:
Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352
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Abstract

Standardized experimental and calculated X-ray powder diffraction data for a new synthetic zeolite, cesium titanium silicate, CsTiSi2O6.5, are reported. In addition, a structure model in space group Ia3d (230), which is isomorphous with the mineral pollucite (CsAlSi2O6·xH2O), is proposed for CsTiSi2O6.5. This structure model is the basis of the reported calculated X-ray powder diffraction data for CsTiSi2O6.5. The experimental pattern for CsTiSi2O6.5 shows this compound crystallizes in a body-centered cubic (BCC) unit cell with a=13.8423 (1) Å. The measured value of the reference intensity ratio (I/Ic) of CsTiSi2O6.5 is 2.37, while the contrasting calculated value of I/Ic is 4.45. The experimental density (Dm) of CsTiSi2O6.5 is 3.48±0.09 g/cm3, in agreement with the calculated density (Dx) of 3.42 g/cm3. Chemical analysis of CsTiSi2O6.5 by atomic absorption spectroscopy gives its composition as 54±2 wt% Cs; 23±2 wt% Ti; 23±2 wt% Si, which compares favorably with the theoretical composition of 56 wt% Cs; 20 wt% Ti; 24 wt% Si.

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Type
Research Article
Information
Powder Diffraction , Volume 12 , Issue 1 , March 1997 , pp. 40 - 46
Copyright
Copyright © Cambridge University Press 1997

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References

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