Understanding the Hydration Process of Salts: The Relation between Surface Mobility and Metastability

Abstract

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Elucidating the Dehydration Pathways of K2CO3·1.5H2O

“…Detailed kinetic analysis led to the observation of a metastable zone for hydration and dehydration. As a result, the reaction kinetics is extremely slow when crossing the equilibrium line, while remaining inside the metastable zone. − This metastable behavior originates from a nucleation barrier at low supersaturations. Attempts were made to increase the kinetics and decrease the width of the metastable zone of potassium carbonate by doping with organic or inorganic dopants. , …”

A Scaling Rule for Power Output of Salt Hydrate Tablets for Thermochemical Energy Storage

“…The hydration kinetics of salt powders have been the subject of several studies, from fundamental to modelling [26][27][28][29][30][31][32]. It is known that hydration kinetics are controlled by either nucleation of the product phase or growth.…”

“…It is known that hydration kinetics are controlled by either nucleation of the product phase or growth. Further, increasing experimental evidence supports that hydration is a liquid mediated process [26,27] and that kinetics are linked to the increasing porosity [29] and to cycling [33]. These achievements have led to several attempts to increase the hydration kinetics [34,35].…”