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Aqueous Sulfate Separation by Crystallization of Sulfate–Water Clusters
Author(s) -
Custelcean Radu,
Williams Neil J.,
Seipp Charles A.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201506314
Subject(s) - sulfate , crystallization , chemistry , aqueous solution , water of crystallization , ligand (biochemistry) , hydrazone , condensation , inorganic chemistry , organic chemistry , biochemistry , receptor , physics , thermodynamics
An effective approach to sulfate separation from aqueous solutions is based on the crystallization of extended [SO 4 (H 2 O) 5 2− ] n sulfate–water clusters with a bis(guanidinium) ligand. The ligand was generated in situ by hydrazone condensation in water, thereby bypassing the need for elaborate syntheses, tedious purifications, and organic solvents. Crystallization of sulfate–water clusters represents an alternative approach to the now established sulfate separation strategies that involve encapsulation of the “naked” anion.