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Phase-diagram of the system LiF-NaF-Na2SO4 and its thermodynamic analysis. 1. Experimental investigation of the phase diagram

J. Gabčová and P. Fellner

Department of Inorganic Technology, Faculty of Chemical Technology, Slovak Technical University, CS-812 37 Bratislava

 

Abstract: Phase equilibria solidus—liquidus in the system LiF-NaF-Na2SO4 were determined by the method of thermal analysis. A congruently melting compound of stoichiometric composition Na3FS04 is formed in the system NaF— Na2SO4 . Composition of investigated mixtures was chosen with re­spect to thermodynamic analysis of the system. From this point of view the systems LiF—Na3FS04  and LiF—Na2SO4 are of special interest. The former one contains a compound which partly dissociates under melting and in the latter system a region of primary crystallization of Na3FS04 occurs.

Full paper in Portable Document Format: 442a177.pdf

 

Chemical Papers 44 (2) 177–182 (1990)

Tuesday, April 16, 2024

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