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Article Dans Une Revue Minerals Année : 2023

The Solid Solution between NaClO3 and NaBrO3 Revisited

Résumé

NaClO3 and NaBrO3 are believed to form a complete solid solution from RT to fusion. The unique solid phase can thus be written: NaClO3(1−x)-NaBrO3(x) with: 0 ≤ x ≤ 1. This study shows that at high temperatures, this statement might be valid. Nevertheless, up to 50 °C, probably up to 160 °C, and even higher temperatures, this is not true when the system is in thermodynamic equilibrium. A large miscibility gap exists at room temperature (RT). This gap could be reduced up to a complete disappearance by fast crystallization, for instance, spray-drying. The necessary conditions to access equilibrium, including homochirality, are also discussed.
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hal-04178490 , version 1 (08-08-2023)

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Copyright (Tous droits réservés)

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Florent Simon, Nicolas Couvrat, Christelle Bilot, Sylvain Marinel, Sylvie Malo, et al.. The Solid Solution between NaClO3 and NaBrO3 Revisited. Minerals, 2023, 13 (8), pp.1006. ⟨10.3390/min13081006⟩. ⟨hal-04178490⟩
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