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Structural and Dynamical Properties of Intercalated Layered Silicates

Published online by Cambridge University Press:  28 February 2011

W. Jin ,
S. D. Mahanti ,
S. A. Solin  and
H. C. Gupta
W. Jin
Affiliation:
Department of Physics and Astronomy, Center for Fundamental Materials Research, Michigan State University, East Lansing, MI. 48824.
S. D. Mahanti
Affiliation:
Department of Physics and Astronomy, Center for Fundamental Materials Research, Michigan State University, East Lansing, MI. 48824.
S. A. Solin
Affiliation:
Department of Physics and Astronomy, Center for Fundamental Materials Research, Michigan State University, East Lansing, MI. 48824.
H. C. Gupta
Affiliation:
Department of Physics and Astronomy, Center for Fundamental Materials Research, Michigan State University, East Lansing, MI. 48824.
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Extract

Structural and dynamical properties of intercalated solids in general [1], and layered silicates of the type AxB1−x -Vermiculite in particular, are of both fundamental and practical interest. In these systems, two types of ions A and B with different ionic radii occupy the space between two silicate layers. On the fundamental side, one is interested in studying the average interlayer spacing as a function of (1) the concentration x of the large ion, (2) sizes and compressibilities of the intercalated ions and (3) the transverse rigidity of the silicate layers. In addition, one is interested in the dynamic properties of these solids. On the practical side, when the size difference between the two intercalants is large, one obtains pillared clays which are characterized by widely spaced silicate layers that are propped apart by sparsely distributed larger interlayer cations (sometimes referred to as pillars) [2]. The enormous free volume of accessible interior space that is derived from such an open structure has significent practical application in the field of catalysis and sieving.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 111: Symposium O – Microstructure and Properties of Catalysts , 1987 , 231
Copyright
Copyright © Materials Research Society 1988

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References

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