Synthesis, cation exchange and dehydration/rehydration of sodium gordaite: NaZn4(OH)6(SO4)Cl·6H2O
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Abstract
Abstract Sodium gordaite (NaG - NaZn4(OH)6(SO4)Cl·6H2O) was synthesized under air and inert atmosphere and characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and selected area electron diffraction spectra (SAED). Intercalated hydrated sodium cations from NaG were exchanged by calcium, potassium and lithium, presenting changes of basal distance from 13.03 A in NaG to, respectively, 16.1 A, 16.1 and 17.9 A (in the sample synthesized under air) and from 13.05 A in NaG to 17.8 A, 17.5 and 17.7 A (in the sample synthesized under inert atmosphere). In the samples synthesized under air, all compounds were co-intercalated with carbonate anions, especially those after the exchange reaction with Ca+ 2 and K+, while this contamination was almost completely removed when the NaG synthesis was performed under inert atmosphere.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Chemical Synthesis and Characterization · Crystal Structures and Properties · Solid-state spectroscopy and crystallography
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References (34)
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