Figure 2

Measured powder X-ray diffractographs for samples A, C, D and E, (b) calculated X-ray diffraction pattern with inset showing lattice parameters, (c) crystal structure of SAT crystal with Orange large sphere: Na atom; blue smaller circle: Oxygen atom, green smaller circle: hydrogen atom, black circle: carbon atom and (d) FTIR spectrographs of sample A, C, D and E.