A. Sarpola, Heikki Hellman, V. Hietapelto
Jul 23, 2007
Citations
1
Influential Citations
38
Citations
Journal
Polyhedron
Abstract
Abstract Hydrolysis and speciation of aluminium sulfate octadecahydrate Al 2 ( SO 4 ) 3 · 18 H 2 O was studied by electrospray time of flight mass spectrometry (ESI TOF MS). Several novel polymeric species were determined. Highly charged polymers, characterized by other methods, such as the Keggin cation [Al13O4(OH)24(H2O)12]7+ and the octameric aluminium hydroxide cluster [Al8(OH)14(H2O)18](SO4)5 16H2O, were found using ESI-MS as the anions [Al13O4(OH)25(SO4)4]2− and [Al8O(OH)14(SO4)5(H2O)4]2−. All the main species identified contained sulfate or hydrogen sulfate. The compositions of the determined ions mimicked those of several stable mineral forms.