The Solid Solution between NaClO3 and NaBrO3 Revisited

SIMON Roger Florent; Nicolas Couvrat; Christelle Bilot; Sylvain Marinel; Sylvie Malo; Gerard François Coquerel

doi:10.20944/preprints202306.1610.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 21 June 2023 / Approved: 22 June 2023 / Online: 22 June 2023 (11:42:09 CEST)

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 temperature this statement might be valid. Nevertheless, up to 50°C and probably up to 160°C and even higher temperature, 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 by spray-drying. The necessary conditions to access to equilibrium including homochirality are also discussed.

Sodium Chlorate, Sodium Bromate, solid solutions, stable & metastable equilibria, spray-drying

Chemistry and Materials Science, Inorganic and Nuclear Chemistry

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The Solid Solution between NaClO3 and NaBrO3 Revisited

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