Infrared Analysis of Partially Deuterated Water Adsorbed on Clay1
- Ralph A. Leonard2
Partially deuterated water (HDO) adsorbed on Na+, K+, Mg2+, and Ca2+ saturated montmorillonite clays was studied by use of infrared spectroscopy. Positions of the primary O-D absorption band of adsorbed HDO were 2533, 2530, 2506, and 2526 cm-1, respectively. In addition, a small secondary band was found at 2670 cm-1. This band may arise from an O-D group very weakly H-bonded to a surface oxygen, or to water isolated in hexagonal cavities in the surface. No evidence of strong H-bonding to the mineral surface was evident. Findings indicate that at low water contents, the exchangeable cation exerts the dominate force affecting the structure of the adsorbed water.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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