Measurement and prediction of physicochemical properties of liquors relevant to the sulfate Process for titania production. 1. Densities in the TiOSO4+ FeSO4+ H2SO4+ H2O system

E. Königsberger; L.C. Königsberger; I. Szilágyi; P.M. May

doi:10.1021/je800484m

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Measurement and prediction of physicochemical properties of liquors relevant to the sulfate Process for titania production. 1. Densities in the TiOSO4+ FeSO4+ H2SO4+ H2O system

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Peer reviewed

Measurement and prediction of physicochemical properties of liquors relevant to the sulfate Process for titania production. 1. Densities in the TiOSO4+ FeSO4+ H2SO4+ H2O system

E. Königsberger, L.C. Königsberger, I. Szilágyi and P.M. May

Journal of Chemical & Engineering Data, Vol.54(2), pp.520-525

2009

DOI: https://doi.org/10.1021/je800484m

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Abstract

No reliable model for the prediction of densities has been reported for the title system. Since this is partly due to conflicting experimental data available in the literature, densities in the title system have been measured by high-precision vibrating-tube densimetry over wide concentration ranges. Measurements comprise binary (single electrolyte) and mixed (ternary) acidic solutions of titanyl sulfate at (25 and 50) °C as well as binary, ternary, and quaternary mixtures containing iron(II) sulfate at 25 °C. We have found that a pro-rata additivity rule for densities applies to a series of aqueous metal sulfate + sulfuric acid mixtures at constant total sulfate concentration, based on hypothetical densities in the supersaturated concentration ranges of the binary metal sulfate subsystems. These hypothetical densities can be readily obtained by extrapolation of the properties of mixed solutions. When included in Masson-type density correlations for the binary metal sulfate systems, the resulting model resolves the reported inconsistencies in density predictions for the FeSO4 + H2SO4 + H2O system. This is the first density model that includes TiOSO4 as a component.

Details

Title: Measurement and prediction of physicochemical properties of liquors relevant to the sulfate Process for titania production. 1. Densities in the TiOSO4+ FeSO4+ H2SO4+ H2O system
Authors/Creators: E. Königsberger (Author/Creator)
L.C. Königsberger (Author/Creator)
I. Szilágyi (Author/Creator)
P.M. May (Author/Creator)
Publication Details: Journal of Chemical & Engineering Data, Vol.54(2), pp.520-525
Publisher: American Chemical Society
Identifiers: 991005543942607891
Murdoch Affiliation: School of Chemical and Mathematical Science
Language: English
Resource Type: Journal article

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Citation topics: 2 Chemistry; 2.89 Ionic, Molecular & Complex Liquids; 2.89.462 Excess Molar Volumes
Web Of Science research areas: Chemistry, Multidisciplinary; Engineering, Chemical; Thermodynamics
ESI research areas: Chemistry