Quasi-elastic neutron scattering measurements were performed on this type of layered double hydroxide structured hydrated hydrotalcite sample in order to study the dynamic behaviour of the water in geometric confinement within the layers. Dynamic parameters corresponding to the confined water molecules revealed that, depending upon the amount of excess water present, they behaved differently and approached bulk values at high concentrations. Both the translational and rotational dynamical parameters showed that, at very low concentrations of excess water, water molecules were attached to the surfaces and exhibited the confinement effect.

Diffusion of Water Adsorbed in Hydrotalcite - Neutron Scattering Study. S.Mitra, A.Pramanik, D.Chakrabarty, F.Jurányi, S.Gautam, R.Mukhopadhyay: Journal of Physics - Conference Series, 2007, 92[1], 012167 (4pp)