Anomalously low activation energy of nanoconfined MgCO3 precipitation. Issue 48 (29th May 2019)

• Record Type: Journal Article
• Authors: Miller, Quin R. S.; Kaszuba, John P.; Schaef, Herbert T.; Bowden, Mark E.; McGrail, B. Peter; Rosso, Kevin M.
• Is Part Of: Chemical communications. Volume 55:Issue 48(2019)
• Page Start: 6835
• Page End: 6837
• Publication Date: 2019-05-29
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c9cc01337g
• Languages: English
• ISSNs: 1359-7345

Abstract

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.