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Effects of Solution Chemistry on the Hydrothermal Synthesis of Kaolinite

Published online by Cambridge University Press:  02 April 2024

Ritsuro Miyawaki ,
Shinji Tomura ,
Soichiro Samejima ,
Masaharu Okazaki ,
Hiroyuki Mizuta ,
Shin-Ichi Maruyama  and
Yasuo Shibasaki
Ritsuro Miyawaki
Affiliation:
Ceramic Technology Department, Government Industrial Research Institute, Nagoya, Kita, Nagoya 462, Japan
Shinji Tomura
Affiliation:
Ceramic Technology Department, Government Industrial Research Institute, Nagoya, Kita, Nagoya 462, Japan
Soichiro Samejima*
Affiliation:
Engineering Research Association for Artificial Clay, Government Industrial Research Institute, Nagoya, Kita, Nagoya 462, Japan
Masaharu Okazaki
Affiliation:
Radiation Research Department, Government Industrial Research Institute, Nagoya, Kita, Nagoya 462, Japan
Hiroyuki Mizuta
Affiliation:
Ceramic Technology Department, Government Industrial Research Institute, Nagoya, Kita, Nagoya 462, Japan
Shin-Ichi Maruyama
Affiliation:
Engineering Research Association for Artificial Clay, Government Industrial Research Institute, Nagoya, Kita, Nagoya 462, Japan
Yasuo Shibasaki
Affiliation:
Ceramic Technology Department, Government Industrial Research Institute, Nagoya, Kita, Nagoya 462, Japan
*
*Present address: Chemical Research Laboratory, TOSOH Corporation, Shin Nan-yo, Yamaguchi 746, Japan.
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Abstract

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The hydrothermal synthesis of kaolinite was examined in the Al2O3-SiO2-H2O system to study inhibitory effects of additional ions on the formation of kaolinite. Syntheses were carried out with amorphous starting materials and salt solutions of various concentrations in Teflon pressure vessels at 220°C for 5 days. The reaction products were characterized by XRD, IR, DTA-TG, NMR and TEM. In all of the runs using solutions with cation concentrations less than 0.001 M, no significant effect on the formation of kaolinite was observed. The inhibitory effect of the univalent cations Li+, Na+ or K+ was less than that of divalent cations such as Mg2+ or Ca2+. The addition of trivalent Fe3+ or excess Al3+ ions interfered with the formation of kaolinite significantly. Sulfate and acetate solutions interfered with the formation of kaolinite more than chlorides and nitrates. No crystalline product was obtained using a 1.0 M basic solution of carbonate or hydroxide. The addition of the lithium ion to the system affected the crystallization of kaolinite only slightly. The use of 0.1 M LiCl and LiNO3 solutions for the syntheses improved crystallization of kaolinite along the [001] direction.

Keywords

Effect of ionsHydrothermal synthesisKaoliniteSolution chemistry
Type
Research Article
Information
Clays and Clay Minerals , Volume 39 , Issue 5 , October 1991 , pp. 498 - 508
Copyright
Copyright © 1991, The Clay Minerals Society

References

Baes, C. F. Jr. and Mesmer, R. E., 1976 The Hydrolysis of Cations New York John Wiley & Sons, Inc. 112 – 123.Google Scholar
De Vijnck, I. A., 1973 Etude des phases cristallines appartenant au systeme Al2O3-SiO2-H2O formées par traitement hydrothermal de gels obtenus par coprécipitation d’Al(OH)3 et de Si(OH)4 Silicates Industriels 38 193 – 209.Google Scholar
De Vynck, Y. A., 1975 Action des ions alcalins sur la transformation hudrothermale de gels silico-alumineux, Premiere partie: Influence de l’ion Li+ Silicates Industriels 40 259 – 272.Google Scholar
De Vynck, Y. A., 1976 Action des ions alcalins sur la transformation hudrothermale de gels silico-alumineux, Deuxieme partie: Influence de l’ion K+ Silicates Industriels 41 67 – 81.Google Scholar
Eberl, D. and Hower, J., 1975 Kaolinite synthesis: The role of the Si/Al and (Alkali)/(H+) ratio in hydrothermal systems Clay & Clay Minerals 23 301 – 309.CrossRefGoogle Scholar
Mason, B., 1966 Principles of Geochemistry 3rd ed. New York John Wiley & Sons, Inc. 164 – 167.Google Scholar
Miyawaki, R., Tomura, S., Shibasaki, Y. and Samejima, S., 1989 Appropriate pH for hydrothermal synthesis of kaolinite from amorphous mixture of alumina and silica Reports of Government Industrial Research Institute, Nagoya 38 330 – 335.Google Scholar
Miyawaki, R., Ota, K., Tanaka, K., Inukai, K., Tomura, S., Samejima, S., Tone, K., Satokawa, S. and Shibasaki, Y., 1990 Factor of acidification of reaction system during hydrothermal synthesis of kaolinite from amorphous mixture of alumina and silica Reports of Government Industrial Research Institute, Nagoya 39 490 – 497.Google Scholar
Nagasawa, K., Sudo, T. and Shimoda, S., 1978 Kaolin minerals Developments in Sedimentology New York Elsevier 189 – 219.Google Scholar
Plançon, A., Giese, R. F. and Snyder, R., 1988 The Hinckley index for kaolinite Clay Miner. 23 249 – 260.CrossRefGoogle Scholar
Roy, R. and Osborn, E. F., 1954 The system Al2O3-SiO2-H2O Amer. Mineral. 39 853 – 885.Google Scholar
Shannon, R. D. and Prewitt, C. T., 1968 Effective ionic radii in oxides and fluorides Acta Crystallogr. B25 925 – 946.Google Scholar
Tomura, S., Shibasaki, Y., Mizuta, H. and Kitamura, M., 1985 Growth conditions and genesis of spherical and platy kaolinite Clays & Clay Minerals 33 200 – 206.CrossRefGoogle Scholar
Tsuzuki, Y., 1986 Solubility products and stoichiometric solubilities of minerals in hydrothermal systems Jour. Mineral. Soc. Japan 17 171 – 179.Google Scholar
Van der Marel, H. W. and Beutelspacher, H., 1976 Atlas of Infrared Spectroscopy of Clay Minerals and their Admixtures New York Elsevier.Google Scholar
Walter-Lévy, L. and Breuil, H., 1961 Sur le systéme AlCl3-Al2O3-H2O a 125, 150, 175 et 200° Compt. Rend. 253 262 – 264.Google Scholar