Water sites at a clay interface
Journal Article
·
· Journal of Colloid and Interface Science
- Univ. de Liege (Belgium). Institut de Chimie B6a
Aqueous suspensions of swelling clays (smectites) find uses in many industrial applications including drilling fluids, suspending agents and water treatment. {sup 2}H NMR quadrupolar splittings of clay suspensions monitor the orientation of water molecules near the solid surface. Two limiting water interfacial sites explain the results on montmorillonite, hectorite, and saponite suspensions. The location of cation isomorphous substitution and the Ca{sup 2+}/Na{sup +} molar ratio of exchangeable cations modulate their relative importance. With beidellite suspensions, water orientation at the clay surface cannot be described within the above scheme.
- OSTI ID:
- 438898
- Journal Information:
- Journal of Colloid and Interface Science, Vol. 185, Issue 2; Other Information: PBD: 15 Jan 1997
- Country of Publication:
- United States
- Language:
- English
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