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Reactions of Molten Salts with Layer-Lattice Silicates

Published online by Cambridge University Press:  01 January 2024

Joe L. White
Joe L. White*
Affiliation:
Agronomy Department, Purdue University, Lafayette, Indiana, USA
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Abstract

A preliminary x-ray diffraction study of the effect of treatment of typical layer-lattice silicates with molten lithium, sodium, and potassium nitrates has been made. Treatment of Wyoming bentonite (Upton, Wyoming) with molten lithium nitrate produced random interstratification of spacings of 9.6 and 17.8 A when specimens were glycerol-solvated, with approximately 20 percent expanded layers. Treatment with sodium nitrate at 320° G produced a very high degree of preferred orientation in film specimens dried from water, whereas treatment with molten potassium nitrate produced a more random orientation in the specimen. The bentonite treated with molten sodium nitrate expanded completely to 17.8 A with glycerol; treatment with potassium nitrate resulted in a small amount of random interstratification, the proportion of expanded layers being about 80 percent.

Treatment of the <5μ fraction of Delamica (muscovite) with molten lithium nitrate removed a large portion of the potassium from the mica, and lithium was fixed in a not readily exchangeable manner. When barium-saturated and glycerol-solvated, the treated material gave an 001 spacing of 17.8 A, the basal spacing for glycerol-montmorillonoids. The amount of potassium removed from the muscovite varied with the muscovite/lithium-nitrate ratio and length of treatment.

Type
Article
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 4 , February 1955 , pp. 133 - 146
Copyright
Copyright © The Clay Minerals Society 1955

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Footnotes

Journal Paper no. 931, Purdue University Agricultural Experiment Station, Lafayette, Indiana

References

Barrer, R. M., 1950, Ion-exchange and ion-sieve processes in crystalline zeolites: J. Chem. Soc., v. 481, p. 2342–2350.CrossRefGoogle Scholar
Barshad, Isaac, 1954, Cation exchange in micaceous minerals. II. Replaceability of ammonium and potassium from vermiculite, biotite and montmorillonite: Soil Sci., v. 78, p. 57–76.CrossRefGoogle Scholar
Brown, George, 1950, A Fourier investigation of montmorillonite: Clay Minerals Bull., v. 1, p. 109–111.CrossRefGoogle Scholar
Brown, George, and Greene-Kelly, R., 1954, X-ray diffraction by a randomly interstratified clay mineral: Acta Cryst., v. 7, p. 101–103.CrossRefGoogle Scholar
Edelman, C. H., and Favejee, J. C. L., 1940, On the crystal structure of montmorillonite and halloysite: 2. Krist., v. 102, p. 417–431.Google Scholar
Greene-Kelly, R., 1952a, Irreversible dehydration in montmorillonite: Clay Minerals Bull., v. 1, p. 221–227.CrossRefGoogle Scholar
Greene-Kelly, R., 1952b, A test for montmorillonite: Nature, v. 170, p. 1130.CrossRefGoogle Scholar
Greene-Kelly, R., 1955, Dehydration of the montmorillonite minerals: Min. Mag., v. 30, p. 604–615.Google Scholar
Grim, R. E., Bradley, W. F., and Brown, George, 1951, The mica clay minerals: in X-ray identification and crystal structures of clay minerals, Mineralogical Society, London, p. 138–172.Google Scholar
Hendricks, S. B., 1942, Crystal structure of clay minerals and some properties of clays: J. Geol., v. 50, p. 276–290.CrossRefGoogle Scholar
Hofmann, U., Endell, K., and Wilm, D., 1933, Kristallstruktur und Quellung von Montmoril- lonit: Z. Krist., v. 86, p. 340–348.Google Scholar
Hofmann, U., and Kiemen, R., 1950, Verlust der Austäuschfahigkeit von Lithiumionen an Bentonit durch Erhitzung: Z. anorg. Chem., v. 262, p. 95–99.CrossRefGoogle Scholar
Mackenzie, R. C., 1952, A micro method for determination of cation-exchange capacity of clay: Clay Minerals Bull., v. 1, p. 203–205.CrossRefGoogle Scholar
Maegdefrau, E., and Hofmann, U., 1937, Die Kristallstruktur des Montmorillonits: Z. Krist., v. 98. p. 299–323.Google Scholar
Marshall, C. E., 1935, Layer lattices and base-exchange clays: Z. Krist., v. 91, p. 433–449.Google Scholar
Thilo, E., 1933, Chemische Untersuchungen von Silikaten. I und II: Z. anorg. Chem., v. 212, p. 369–384.CrossRefGoogle Scholar
Van Artsdalen, E. R., and Yaffe, I. S., 1955, Electrical conductance and density of molten salt systems: KCl-LiCl, KCl-NaCl and KCl-KI: J. Phys. Chem., v. 59, p. 118–127.Google Scholar
Wear, J. I., and White, I. L., 1951, Potassium fixation in clay minerals as related to crystal structure: Soil Sci., v. 71, p. 1–14.CrossRefGoogle Scholar
White, J. L., 1954, Reactions of molten salts with layer-lattice silicates: Nature, v. 174, p. 799.CrossRefGoogle Scholar
Winkler, H. G. F., 1954, Struktur und Polymorphie des Eukryptits (Tief-LiAlSiO4) (Betrachtungen zur Polymorphie II.): Heidelberger Beiträge zur Mineralogie und Petrographic, v. 4, p. 233–242.Google Scholar