6533b7d8fe1ef96bd1269991

RESEARCH PRODUCT

Speciation of Al3+ in fairly concentrated solutions (20 to 200 mmol L-1) at I = 1 mol L-1 (NaNO3), in the acidic pH range, at different temperatures.

Alba GiacaloneAntonio GianguzzaConcetta De StefanoRosalia Maria Cigala

subject

Chemical Health and SafetyAqueous solutionChemistryHealth Toxicology and Mutagenesismedia_common.quotation_subjectEnthalpyInorganic chemistryToxicologyGlass electrodelaw.inventionSpeciationHydrolysislawMolePh rangealuminium(III) speciation hydrolysis constants hydrolysis enthalpy changesSettore CHIM/01 - Chimica Analiticamedia_commonAluminium(III) speciation; Hydrolysis constants; Hydrolysis enthalpy changes

description

AbstractThe hydrolysis of Al3+ was studied in aqueous 1 mol L−1 NaNO3 solution at different concentrations (20–200 mmol L−1) and temperatures (283.15–343.15 K) by potentiometry (ISE-H+, glass electrode). Many different speciation models were considered in the calculations and it was found that the best model is represented by the following species: Al(OH)2+, Al(OH)45+, Al13(OH)327+. Hydrolysis constants and enthalpy changes at different temperatures are reported.

yearjournalcountryeditionlanguage
2011-01-01
10.3184/095422911x12971889727358http://hdl.handle.net/11570/1904634