Skip to Main Content
Book Chapter

Interlayer Reactions in Expandable Clays:Exchange, Solvation, and Intercalation Experiments

Brenda Ross and Stephen Guggenheim (2002) Interlayer Reactions in Expandable Clays: Exchange, Solvation, and Intercalation Experiments: In CMS Workshop Lectures, Vol. 11, Teaching Clay Science, A. Rule and S. Guggenheim, eds. The Clay Mineral Society, Aurora, CO, 161-179.

By
Brenda Ross
Brenda Ross
Department of Chemistry
Cottey College
Nevada, Missouri 64772 U.S.A.
Search for other works by this author on:
Stephen Guggenheim
Stephen Guggenheim
Department of Earth and Environmental Sciences
University of Illinois at Chicago
Chicago, Illinois 60607 U.S.A.
Search for other works by this author on:
Published:
January 01, 2002

Abstract

Layer charge in clay minerals refers to a net negative charge that occurs in the layer because of cation or anion substitutions or the occurrence of vacancies in either (or both) the tetrahedral and octahedral sites. The magnitude of the layer charge may vary and this variation has a profound effect on the physical properties of these minerals. Some clay minerals, for example pyrophyllite, have a neutral layer or no net layer charge, whereas other clay minerals have a very low layer charge (e.g., smectite), a somewhat higher charge (e.g., vermiculite), or even higher charge (e.g., mica). The resulting physical properties of smectite (low layer charge) and vermiculite (moderate layer charge) range from extensive expansion to moderate expansion of the layer-to-layer distance, and these minerals are known as the “expandable clays”. Clays without a layer charge (e.g., pyrophyllite) or clays with a high layer charge (e.g., micas) generally will not expand, either because a neutral layer is already satisfied and no additional cations are needed to offset the lack of charge or, with high-charge layers, the cations between the layers form strong electrostatic bonds that cannot easily be broken. In this laboratory, we are concerned with the expandable clays.

You do not currently have access to this article.

Figures & Tables

Contents

Clay Minerals Society Workshop Lectures

Teaching clay science

Audrey C. Rule
Audrey C. Rule
Search for other works by this author on:
Stephen Guggenheim
Stephen Guggenheim
Search for other works by this author on:
Clay Minerals Society
ISBN electronic:
9781881208310
Publication date:
January 01, 2002

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal