CHARACTERIZATION AND APPLICATION OF A ZINC CLAY SMECTITE SYNTHETIC

Reference	Presenter	Authors (Institution)	Abstract
16-036	Francisco Rolando Valenzuela-Diaz	Carvalho, T.C.(Polytechnic School of the University of São Paulo); Hidelbrando, E.A.(Federal University of Pará); Neves, R.F.(Federal University of Pará); Valenzuela-Diaz, F.R.(Polytechnic School of the University of São Paulo); Maggi, C.N.(Polytechnic School of University of São Paulo);	Stevensite is a 2:1 smectite clay mineral, with few natural deposits. It has already been synthesized but there are few studies addressing the subject. In this study, a zinc synthetic stevensite was provided by Applied Clays Laboratory (ARGILAB) from the Polytechnic School of the University of São Paulo. The obtained synthetic clay mineral was characterized by X-ray Diffraction (XRD), Attenuated Infrared Spectroscopy (ATR-FTIR) and Scanning and Transmission Electron Microscopies. The clay mineral had its plasticity evaluated. Subsequently, prismatic samples were obtained by pressing and then dried at 110 °C and fired at 950 and 1250 °C. The samples were characterized, by essays such as, the samples were characterized by FEG-SEM, linear shrinkage, water adsorption, apparent porosity and flexural strength. The results showed that the synthetic clay presents patterns characteristic of stevensite and presents potential to be applied in advanced ceramics.
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