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Synthesis and Characterization of a Hollow Spherical Form of Monolayer Aluminosilicate

Published online by Cambridge University Press:  02 April 2024

Koji Wada ,
Michael Wilson ,
Yasuko Kakuto  and
Shin-Ichiro Wada
Koji Wada
Affiliation:
Faculty of Agriculture, Kyushu University 46, Fukuoka 812, Japan
Michael Wilson
Affiliation:
Division of Fossil Fuels, CSIRO, Delhi Road, North Ryde, New South Wales 2113, Australia
Yasuko Kakuto
Affiliation:
Faculty of Agriculture, Kyushu University 46, Fukuoka 812, Japan
Shin-Ichiro Wada
Affiliation:
Faculty of Agriculture, Kyushu University 46, Fukuoka 812, Japan
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Abstract

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Hollow spherical particles of aluminosilicate having diameters of 80 to 100 Å and high electric charge were synthesized by heating solutions containing Si and Al concentrations of about 2 mM (Si/Al molar ratio = 1.0–1.2; pH = 9.0) at 95°–100°C for 7 days. Electron microscopy, X-ray powder diffraction, and infrared spectroscopy suggested that the walls of the spherical particles consisted of monolayer aluminosilicate, most probably having a 1:1 layer structure. Chemical analysis supported this supposition but indicated modifications as shown in the formula (Si1.85Alo0.62)IV(Al1.38)VI(OH)4.10O4.96Na0.62, compared with (Si2)lv(Al2)VI(OH)4O5 for an ideal 1:1 layer silicate. High-resolution 29Si and 27A1 nuclear magnetic resonance spectroscopy indicated the substitution of Al for Si in the tetrahedral sheet, the presence of A1IV and A1VI, and the presence of Si bonded through oxygen to three Al atoms and one H. A natural counterpart of the synthesized aluminosilicate may be a precursor of halloysites formed by weathering of volcanic ash and pumice and have a close structural relation with allophane and imogolite

Keywords

AllophaneAluminosilicateHalloysiteImogoliteInfrared spectroscopyNuclear magnetic resonanceSynthesisTransmission electron microscopy
Type
Research Article
Information
Clays and Clay Minerals , Volume 36 , Issue 1 , February 1988 , pp. 11 - 18
Copyright
Copyright © 1988, The Clay Minerals Society

References

Bernas, B., 1968 A new method for decomposition and comprehensive analysis of silicates by atomic absorption spectrometry Anal. Chem. 40 1682 – 1686.CrossRefGoogle Scholar
Barron, P. F., Frost, R. L., Skjenitad, J. O. and Koppi, A. J., 1983 Detection of two silicon environments in kaolins by solid state 29Si NMR Nature 302 49 – 50.CrossRefGoogle Scholar
Barron, P. F., Wilson, M. A., Campbell, A. S. and Frost, R. L., 1982 Detection ofimogolite in soils using solid state MSi NMR Nature 299 616 – 618.CrossRefGoogle Scholar
Cradwick, P. D. G. Farmer, V. C., Russell, J. D., Masson, C. R., Wada, K. and Yoshinaga, N., 1972 Imogolite, a hydrated aluminum silicate of tubular structure Nature Phys. Sci. 204 187 – 189.CrossRefGoogle Scholar
Farmer, V. C., Fraser, A. R. and Tait, J. M., 1979 Characterization of the chemical structures of natural and synthetic aluminosilicate gels and sols by infrared spectroscopy Geochim. Cosmochim. Acta 43 1417 – 1420.CrossRefGoogle Scholar
Goodman, B. A., Russell, J. D., Montez, B., Oldfield, E. and Kirkpatrick, R. J., 1985 Structural studies of imogolite and allophane by aluminum-27 and silicon-29 nuclear magnetic resonance spectroscopy Phys. Chem. Minerals 12 342 – 346.CrossRefGoogle Scholar
Henmi, T. and Wada, K., 1976 Morphology and composition of allophane Amer. Mineral. 61 379 – 390.Google Scholar
Kinsey, R. A., Kirkpatrick, R. J., Hower, J., Smith, K. A. and Oldfield, E., 1985 High resolution aluminum-27 and silicon-29 nuclear magnetic resonance spectroscopic study of layer silicates, including clay minerals Amer. Mineral. 70 537 – 548.Google Scholar
Lippmaa, E., Magi, M., Samoson, A., Engelhardt, G. and Grimmer, A. R., 1980 Structural studies of silicates by solid-state high-resolution 29Si NMR J. Amer. Chem. Soc. 102 4889 – 4893.CrossRefGoogle Scholar
MacKenzie, K. J. D. Brown, I. W. M. Meinhold, R. H. and Bowden, M. E., 1985 Outstanding problems in the ka-olinite-mullite reaction sequence investigated by 29-Si and 27-Al solid state NMR. I. Metakaolinite J. Amer. Ceram. Soc. 68 293 – 297.CrossRefGoogle Scholar
Parfitt, R. L., Furkert, R. J. and Henmi, T., 1980 Identification and structure of two types of allophane from volcanic ash soils and tephra Clays & Clay Minerals 28 328 – 334.CrossRefGoogle Scholar
Parfitt, R. L. and Henmi, T., 1980 Structure of some al-lophanes from New Zealand Clays & Clay Minerals 28 285 – 294.CrossRefGoogle Scholar
Stubican, V. and Roy, R., 1961 Infrared spectra of layer-structure silicates J. Amer. Ceram. Soc. 44 625 – 627.CrossRefGoogle Scholar
van der Gaast, S. J., Wada, K., Wada, S.-I. and Kakuto, Y., 1985 Small-angle X-ray powder diffraction, morphology, and structure of allophane and imogolite Clays & Clay Minerals 33 237 – 243.CrossRefGoogle Scholar
Wada, K. and Kakuto, Y., 1985 Embryonic halloysites in Ecuadorian soils derived from volcanic ash Soil Sci. Soc. Amer. J. 49 1309 – 1318.CrossRefGoogle Scholar
Wada, K. and Kakuto, Y., 1986 Embryonic halloysites in volcanic ash soils in Kenya and Rwanda Abstracts, 30th Ann. Meet. Clay Mineral Soc. Japan 52.Google Scholar
Wada, K., Kakuto, Y. and Muchena, F. N., 1987 Clay minerals and humus complexes in five Kenyan soils derived from volcanic ash Geoderma 39 307 – 321.CrossRefGoogle Scholar
Wada, K., Yamauchi, H., Kakuto, Y. and Wada, S.-I., 1985 Embryonic halloysites in a paddy soil derived from volcanic ash Clay Sci. 6 177 – 186.Google Scholar
Wada, S.-I., 1987 Imogolite synthesis at 2 5°C:Clays & Clay Minerals 35 379 – 384.Google Scholar
Wada, S.-I. Aoki, K. and Wada, K., 1977 The interior structure of spherical halloysite particles Clay Sci. 5 113 – 121.Google Scholar
Wada, S.-I. Eto, A. and Wada, K., 1979 Synthetic allophane and imogolite J. Soil Sci. 30 347 – 355.CrossRefGoogle Scholar
Wada, S.-I. and Wada, K., 1977 Density and structure of allophane Clay Miner. 12 289 – 298.CrossRefGoogle Scholar
Wada, S.-I. and Wada, K., 1983 Reactions between aluminate ions and orthosilicic acid in dilute, alkaline to neutral solutions Soil Sci. 132 267 – 273.CrossRefGoogle Scholar
Yoshinaga, N. and Aomine, S., 1962 Imogolite in some Ando soils Soil Sci. Plant Nutr. 8 114 – 121.Google Scholar