Abstract
Porous aluminosilicates of the zeolite type have become important industrially as ion-exchangers, molecular sieves and catalysts1,2. Topologically, the tetrahedral centres of the oxygen tetrahedra lie at the nodes of various 4-connected three-dimensional nets. Four-connected porous frameworks (AlPO4) composed of alternating AlO4 and PO4 tetrahedra are the basis of a new family of synthetic molecular sieves, which may become important industrially because they lack the strong ion-exchange and catalytic properties of the zeolites3. Aluminophosphates display a wide range of crystal structures because Al can be coordinated to either four, five or six oxygen atoms, some of which may belong to either hydroxyl or water species3–12. As part of a systematic study of the crystal chemistry of aluminophosphates, we have found that the framework of synthetic-phase H3 (ref. 13) (AlPO4 · 1.5 H2O) contains PO4 tetrahedra alternating between AlO4 tetrahedra and AlO4(H2O)2 octahedra. As reported here, the 4-connected three-dimensional net formed by linking adjacent Al and P atoms is a new type containing 6.6.6 and 4.8.8. two-dimensional nets joined by up–down linkages. This coexistence of two types of two-dimensional· nets in a three-dimensional net suggests that the principle of parsimony should not be adopted too strictly in attempts to invent new nets of potential relevance to molecular sieve technology.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Breck, D. W. Molecular Sieves (Wiley, New York, 1974).
Rabo, J.A. (ed.) Am. chem. Soc. Monogr. 171 (1976).
Wilson, S. T., Lok, B. M., Messina, C. A., Cannan, T. R. & Fanigen, E. M. J. Am. chem. Soc. 104, 1146–1147 (1982).
Schwarzenbach, D. Z. Kristallogr. 123, 161–185 (1966).
Kneip, R. & Mootz, D. Acta crystallogr. B29, 2292–2294 (1973).
Kneip, R., Mootz, D. & Vegas, A. Acta crystallogr. B33, 263–265 (1977).
Keegan, T. D., Araki, T. & Moore, P. B. Am. Miner. 64, 1243–1247 (1979).
Bennett, J. M., Cohen, J. P., Flanigen, E. M., Pluth, J. J. & Smith, J. V. Am. chem. Soc. Symp. Ser. 218, 109–118 (1983).
Pluth, J.J., Smith, J.V., Bennett, J.M. & Cohen, J.P. Acta crystallogr. C40, 2008–2011 (1984).
Bennett, J.M., Cohen, J.P., Artioli, G., Pluth, J.J. & Smith, J.V. Inorg. Chem. 24, 188–193 (1985).
Parise, J. B. JCS Chem. Commun. 1449–1450 (1984).
Pluth, J. J., Smith, J. V. & Bennett, J. M. Acta crystallogr. (submitted).
d'Yvoire, F. Bull. Soc. chim. Fr. 1762–1776 (1962).
Smith, J. V. Z. Kristallogr. 165, 191–198 (1983).
Meier, W. M. & Olson, D. H. Atlas of Zeolite Structure Types (Polycrystal Book Service, Pittsburgh, Pennsylvania, 1978).
Meier, W. M. & Moeck, H. J. J. Solid State Chem. 24, 349–355 (1979).
Smith, J. V. Am. Miner. 62, 703–709 (1977).
Smith, J. V. Am. Miner. 63, 960–969 (1978).
Smith, J. V. & Rinaldi, F. Mineralog. Mag. 33, 202–212 (1962).
Meier, W. M. Natural Zeolites (eds Sand, L. B. & Mumpton, F. A.) 99–103 (Pergamon, Oxford, 1978).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Pluth, J., Smith, J. A hydrated aluminophosphate with both 4.82 and 63 sheets in the 4-connected framework. Nature 318, 165–166 (1985). https://doi.org/10.1038/318165a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/318165a0
This article is cited by
-
Factors enhancingAgrobacterium tumefaciens-mediated gene transfer in peanut (Arachis hypogaea L.)
In Vitro Cellular & Developmental Biology - Plant (1998)
-
Double rotation27Al NMR in molecular sieves
Applied Magnetic Resonance (1996)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
