Skip to Main content Skip to Navigation
Journal articles

Kinetic study of the dissolution of vanadyl sulfate and vanadium pentoxide in sulfuric acid aqueous solution

Abstract : The study deals with the ‘vanadium (IV) sulfate’ and ‘vanadium (V) pentoxide’ dissolution processes in 3 M H2SO4 aqueous media. Several measurements of the concentration of dissolved VO2+ and VO2+ were achieved in the range of 0–40 °C, and allowed to understand the limitations of the dissolution process (‘endothermic’ – mass transport for VOSO4 and ‘exothermic’ – reaction with the proton for V2O5). In addition, simple models were proposed (diffusion/accumulation for VOSO4 and kinetic rate for V2O5) and their resolution leads to theoretical kinetic equations describing the temporal evolution of these concentrations with satisfactory agreement with the experimental curves. Solubility’s data and their temperature dependence were determined for both vanadium compounds involved.
Complete list of metadata

Cited literature [39 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-02290658
Contributor : Open Archive Toulouse Archive Ouverte (OATAO) Connect in order to contact the contributor
Submitted on : Tuesday, September 17, 2019 - 6:47:26 PM
Last modification on : Wednesday, June 1, 2022 - 4:26:23 AM

File

ElHage_24225.pdf
Files produced by the author(s)

Identifiers

Collections

Citation

Ranine El Hage, Fabien Chauvet, Béatrice Biscans, Laurent Cassayre, L. Maurice, et al.. Kinetic study of the dissolution of vanadyl sulfate and vanadium pentoxide in sulfuric acid aqueous solution. Chemical Engineering Science, Elsevier, 2019, 199, pp.123-136. ⟨10.1016/j.ces.2019.01.024⟩. ⟨hal-02290658⟩

Share

Metrics

Record views

116

Files downloads

559