Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-17T23:14:40.970Z Has data issue: false hasContentIssue false
  • English
  • Français

Interlayer Bonding in Kaolinite, Dickite and Nacrite

Published online by Cambridge University Press:  01 July 2024

R. F. Giese Jr.
R. F. Giese Jr.*
Affiliation:
Department of Geological Sciences, State University of New York at Buffalo, P.O. Box U, Station B, Buffalo, New York 14207, U.S.A.
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A simple electrostatic model has been used to demonstrate that the inner surface hydroxyls in kaolinite, dickite and nacrite are responsible for the interlayer bonding in these minerals. The contribution to the interlayer bonding of an individual hydroxyl hydrogen depends on the orientation of the hydroxyl group relative to the 1:1 layer since this orientation determines the H—O interlayer distance. If this distance is much greater than the sum of the van der Waals radii, 2·60 Å, there is essentially no bond. As the distance becomes less than 2·60 Å, the strength of the interlayer bond increases.

Résumé

Résumé

Un modèle électrostatique simple a été utilisé pour démontrer que les hydroxyles de la surface interne de la kaolinite, de la dickite et de la nacrite sont responsables de la liaison entre les feuillets de ces minéraux. La contribution à la liaison interfeuillet de l’hydrogène d’un hydroxyle pris individuellement dépend de l’orientation du groupe hydroxyle par rapport à la couche 1:1, puisque cette orientation détermine la distance H—0 entre deux feuillets consécutifs. Si cette distance est beaucoup plus grande que la somme des rayons de van der Waals, 2,60 Å, il n’y a par définition aucune liaison. Lorsque cette distance devient inférieure à 2,60 Å, l’intensité de la liaison interfeuillet augmente.

Kurzreferat

Kurzreferat

Um zu zeigen, daß Hydroxylgruppen der inneren Oberflächen in Kaolinit, Dickit und Nakrit für die Zwischenschichtbindung in diesen Mineralen verantwortlich sind, wurde ein einfaches elektrostatisches Modell benutzt. Der Beitrag eines einzelnen Hydroxyl-Wasserstoffs zur Zwischenschichtbindung hängt von der Orientierung der Hydroxylgruppe zur 1:1-Schicht ab, da diese den H—0-Zwischenschichtabstand bestimmt. Ist dieser Abstand sehr viel größer als die Summe der van der Waals-Radien, 2,60 Å, so tritt keine wesenfliche Bindung auf. Unterschreitet der Abstand den Wert von 2,60 Å, so steigt die Stärke der Zwischenschichtbindung an.

Резюме

Резюме

Простая электростатическая модель применяется для доказательства того, что внутренние поверхностные гидроксилы каолинита, диккита и накрита ответствены за межслойную связь этих минералов. Способность индивидуального гидрокислого водорода содействовать межслойной связи зависит от ориентации гидроксильной группы относительно слоя 1:1, т. к. ориентация определяет расстояние Н… 0 между слоями. Если это расстояние намного превышает сумму радиусов Ван-дер-Ваальса, 2,60 А, то, по существу, связи не имеется. По мере того как расстояние становится менее 2,60 А, повышается прочность связи между слоями.

Type
Research Article
Information
Clays and Clay Minerals , Volume 21 , Issue 3 , June 1973 , pp. 145 - 149
Copyright
Copyright © 1973 The Clay Minerals Society

References

Baur, W. H., (1965) On hydrogen bonds in crystalline hydrates Acta Cryst. 19 909–916.CrossRefGoogle Scholar
Bertaut, F., (1952) L’energie electrostatique de reseaux ioniques J. Phys. Radium 13 499–505.CrossRefGoogle Scholar
Blount, A. M., Threadgold, I. M. and Bailey, S. W., (1969) Refinement of the crystal structure of nacrite Clays and Clay Minerals 17 185–194.CrossRefGoogle Scholar
Born, M. and Landé, A., (1918) Ueber die Berechnung der Kompressibilität regulärer Kristalle aus der Gittertheorie Verh. der Deutsch. Phys. Ges. 20 210–216.Google Scholar
Born, M. and Mayer, J. E., (1932) Zur Gittertheorie der Ionenkristalle Z. Phys. 75 1–18.CrossRefGoogle Scholar
Brindley, G. W., (1967) AGI Short Course Lecture Notes—Layer Silicates, Section A .Google Scholar
Busing, W. R., (1970) An interpretation of the structures of alkaline earth chlorides in terms of interionic forces Trans. Amer. Crystall. Assoc. 6 57–72.Google Scholar
Coulson, C. A. and Danielsson, W., (1954) Ionic and covalent contributions to the hydrogen bond Arkiv Fysik Bd 8 239–244.Google Scholar
Cruz, M., Jacobs, H. and Fripiat, J. J., (1972) The nature of the cohesion energy in kaolin minerals Internat. Clay Conf. 1 59–70.Google Scholar
Evans, R. C., (1964) An Introduction to Crystal Chemistry Cambridge Cambridge University Press.Google Scholar
Giese, R. F., (1971) Hydroxyl orientation in muscovite as indicated by electrostatic energy calculations Science 172 263–264.CrossRefGoogle ScholarPubMed
Giese, R. F. and Datta, P., (1971) The orientation of hydroxyl groups in kaolinite, dickite and nacrite 20th Annual Clay Conf. .Google Scholar
Giese, R. F., Weller, S. and Datta, P., (1972) Electrostatic energy calculations of diaspore (alpha AlOOH), goethite (alpha FeOOH) and groutite (alpha MnOOH) Z. Krist. 134 275–284.Google Scholar
Hamilton, W. C. and Ibers, J. A., (1968) Hydrogen Bonding in Solids New York Benjamin Inc..Google Scholar
Hendricks, S. B., (1938) The crystal structure of nacrite Al2O3. 2SiO2. 2H2O and the polymorphism of the kaolin minerals Z. Krist. 100 509–518.Google Scholar
Ladd, M. F. C., (1968) The location of hydrogen atoms in crystalline ionic hydrates Z. Krist. 126 147–152.CrossRefGoogle Scholar
Newnham, R. E., (1961) A refinement of the dickite structure and some remarks on polymorphism in kaolin minerals Mineral. Mag. 32 683–704.Google Scholar
Sherman, J., (1932) Crystal energies of ionic compounds and thermo-chemical applications Chem. Rev. 11 93–170.CrossRefGoogle Scholar
Zvyagin, B. B., (1967) Electron-Diffraction Analysis of Clay Mineral Structures New York Plenum Press.CrossRefGoogle Scholar