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Epitaxial growth of zeolite X on zeolite A and twinning in zeolite A: structural and topological analysis

Published online by Cambridge University Press:  25 June 2018

F. Porcher ,
Y. Dusausoy ,
M. Souhassou  and
C. Lecomte
F. Porcher*
Affiliation:
Laboratoire de Cristallographie et Modélisation des Matériaux Minéraux, et Biologiques associé au C.N.R.S., U.P.R.E.S.A 7036, Université Henri Poincaré Nancy I, BP 239, 54506 Vandœuvre-lès-Nancy cedex, France
Y. Dusausoy
Affiliation:
Laboratoire de Cristallographie et Modélisation des Matériaux Minéraux, et Biologiques associé au C.N.R.S., U.P.R.E.S.A 7036, Université Henri Poincaré Nancy I, BP 239, 54506 Vandœuvre-lès-Nancy cedex, France
M. Souhassou
Affiliation:
Laboratoire de Cristallographie et Modélisation des Matériaux Minéraux, et Biologiques associé au C.N.R.S., U.P.R.E.S.A 7036, Université Henri Poincaré Nancy I, BP 239, 54506 Vandœuvre-lès-Nancy cedex, France
C. Lecomte
Affiliation:
Laboratoire de Cristallographie et Modélisation des Matériaux Minéraux, et Biologiques associé au C.N.R.S., U.P.R.E.S.A 7036, Université Henri Poincaré Nancy I, BP 239, 54506 Vandœuvre-lès-Nancy cedex, France
*
*E-mail: [email protected]
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Abstract

Synthesis of large zeolite A and X crystals by a modified Charnell’s method led to the formation of twinned zeolite NaA crystals, overgrowth of NaX onto NaA and co-crystallization of another phase analysed by electron microprobe as a Na aluminosilicate but not yet identified. Single crystals of NaA have a perfect cubic habit with a 100 μm edge. Twinned crystals of NaA are of the same size and correspond to an intergrowth of two cubes like that found in twinned fluorite crystals. NaX single crystals are octahedral, 220 μm along the [100] direction. Based on the difference in morphology of A and X crystals, epitaxial growth of NaX zeolite on NaA was also clearly identified by scanning electron micrographs. The object of this contribution is to provide topological and structural information on the twinning and epitaxy.

Keywords

zeoliteepitaxial growthCharnell’s methodtwinning
Type
Research Article
Information
Mineralogical Magazine , Volume 64 , Issue 1 , February 2000 , pp. 1 - 8
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2000

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References

Burton, W.K. and Cabrera, N. (1947) Disc. Farada. Soc., 5, 33.CrossRefGoogle Scholar
Charnell, J.F. (1971) Gel growth of large crystals of sodium A and sodium X zeolites. J. Cryst. Growth, 8, 291–4.CrossRefGoogle Scholar
Curien, H. and Kern, R. (1957) Macles par contact et par pénétration. Essai d'interprétation causale. Bull. Soc. franç. Minéral. Cristallogr., 80, 111–32.CrossRefGoogle Scholar
Curien, H. and Le Corre, Y. (1958) Notations des macles à l'aide du symbolisme des groupes de couleurs de Choubnikov. Bull. Soc. franç. Minéral. Cristallogr., 81, 126–32.CrossRefGoogle Scholar
Edelman, R.D., Kudalkar, D.V., Ong, T., Warzywoda, J. and Thompson, R.W. (1989) Crystallisation phenomena in seeded zeolite syntheses. Zeolites, 9, 496–502.CrossRefGoogle Scholar
Hartman, P. (1956) On the morphology of growth twins. Zeits. Krystallogr., 107, 225–37.CrossRefGoogle Scholar
Hartman, P. and Perdok, W.G. (1955) On the relations between structure and morphology of crystals I. Acta. Cryst., 8, 49–52.CrossRefGoogle Scholar
Hartman, P. and Perdok, W.G. (1955) On the relations between structure and morphology of crystals II. Acta. Cryst., 8, 521–4.CrossRefGoogle Scholar
Kern, R. (1961) Sur la formation des macles de croissance. Bull. Soc. franç. Minéral. Cristallogr., 84, 292–311.CrossRefGoogle Scholar
Löwenstein, W. (1954) The distribution of aluminium in the tetrahedra of silicates and aluminates. Amer. Mineral., 39, 92.Google Scholar
Porcher, F. (1998) Cristallographie treès haute résolution et propriétés électrostatiques de monocristaux de zéolithes A et X déshydratés. PhD thesis, Université H. Poincaré, Nancy I, France.Google Scholar
Porcher, F., Souhassou, M., Dusausoy, Y. and Lecomte, C. (1998) Structure cristalline sur monocristal de la zéolithe LiA totalement échangée et déshydratée. C. R. Acad. Sci. Paris, Série II c, 701–8.CrossRefGoogle Scholar
Porcher, F., Souhassou, M., Dusausoy, Y. and Lecomte, C. (1999), The crystal structure of a low-silica dehydrated NaX zeolite. Eur. J. Mineral., 11, 333–43.CrossRefGoogle Scholar
Scott, G., Dixon, A.G., Sacco, A. Jr., Thompson, R.W. (1989) Zeolites, facts, figures, futures. P. 363 in: Proc. 8th Int. Zeolite Conf. Elsevier, Amsterdam.Google Scholar