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Layer Charge Determination by Alkylammonium Ions

By
Gerhard Lagaly
Gerhard Lagaly
Institute of Inorganic Chemistry University of Kiel
OlshausenstraBe 40, W-2300 Kiel, FRG
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Published:
January 01, 1994

Abstract

The Layer Charge (I.c.) of a 2:1 clay mineral is defined as the number (X+Y) of permanent charges per formula unit:forumla

(Table 1)*.The elementary (unit) cell contains two formula units. The permanent charges result from isomorphic substitutions and defects in the octahedral and tetrahedral sheet. A further contribution may arise from protons which are adsorbed by oxygen ions or desorbed from hydroxide ions. The formula given above considers the layers to be very large so that the chemistry at the edges may be ignored.

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Contents

Clay Minerals Society Workshop Lectures

Layer Charge Characteristics of 2:1 Silicate Clay Minerals

A. R. Mermut
A. R. Mermut
University of Saskatchewan S.I.P., Department of Soil Science Saskatoon SK., S7N 0W0 Canada
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S. A. Boyd
S. A. Boyd
Michigan state University, East Lansing, MI, USA
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W. J. Farmer
W. J. Farmer
University of california, Riverside, CA, USA
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W. F. Jaynes
W. F. Jaynes
Amercian Colloid Co,. Arlington Heights, IL, USA
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G. Lagaly
G. Lagaly
Univesity of Kiel, Kiel, Germany
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D. A. Laird
D. A. Laird
USDA-ARS, Ames, IA, USA
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A. R. Mermut
A. R. Mermut
University of Saskatchewan, saskatoon, Sk, Canada
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Clay Minerals Society
Volume
6
ISBN electronic:
9781881208266
Publication date:
January 01, 1994

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