Anomalously low activation energy of nanoconfined MgCO3 precipitation. Issue 48 (29th May 2019) - Miller, Quin R. S.
Abstract : Experimental study of nanoconfined MgCO3 nucleation and growth processes reveals elevated kinetics due to less strongly hydrated Mg 2+ . Abstract : Magnesite (MgCO3 ) precipitation within the nanoconfined space of adsorbed H2 O films (∼5 monolayers) was determined to have an apparent activation energy of only 36 ± 6 kJ mol −1, suggesting that Mg 2+ under nanoconfinement adopts a hydration configuration that mimics that of aqueous Ca 2+, at least energetically, if not also specifically in hydration structure.