“…47 However, one of the most studied, although not yet completely understood complex system, is the 48 interaction between water and the clay mineral. The process of water intercalation is highly 49 dependent on the interlayer cation as well as on the layer charge (Dazas et al, 2013;Gates, 2006; 50 Gates et al, 2012) and it has been studied by many techniques such as X-ray diffraction (XRD) 51 (Wada et al, 1990), X-ray absorption fine structure (XAFS) (Ashley and Doniach, 1975; Lee and 52 Beni, 1977; Lee and Pendry, 1975;Schaich, 1973), nuclear magnetic resonance (NMR) (Tenorio et 53 al., 2010(Tenorio et 53 al., , 2008 and Quasi-elastic Neutron Scattering (QENS) (Bordallo et al, 2008;Gates et al, 54 2012). 55…”