Synthesis, cation exchange and dehydration/rehydration of sodium gordaite: NaZn4(OH)6(SO4)Cl·6H2O
作者： Swami Area Maruyama , Fernanda Krause , Sergio Rodrigues Tavares Filho , Alexandre Amaral Leitão , Fernando Wypych
DOI: 10.1016/J.CLAY.2017.05.029
关键词:
摘要: Abstract Sodium gordaite (NaG - NaZn4(OH)6(SO4)Cl·6H2O) was synthesized under air and inert atmosphere characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) selected area electron spectra (SAED). Intercalated hydrated sodium cations from NaG were exchanged calcium, potassium lithium, presenting changes of basal distance 13.03 A in to, respectively, 16.1 A, 16.1 17.9 A (in the sample air) 13.05 A to 17.8 A, 17.5 17.7 A atmosphere). In samples air, all compounds co-intercalated with carbonate anions, especially those after exchange reaction Ca+ 2 K+, while this contamination almost completely removed when synthesis performed atmosphere.
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