Mechanisms of dissolution of iron oxides in aqueous oxalic acid solutions
β Scribed by D. Panias; M. Taxiarchou; I. Paspaliaris; A. Kontopoulos
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 413 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0304-386X
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The dissolution of nickel ferrite in oxalic acid and in ferrous oxalate-oxalic acid aqueous solution was studied. Nickel ferrite was synthesized by thermal decomposition of a mixed tartrate; the particles were shown to be coated with a thin ferric oxide layer. Dissolution takes place in two stages,
The dissolution of vanadium pentoxide in perchloric and oxalic acids has been studied at 25.0 degreesC and ionic strength 0.50 mol dm-3 (NaClO4). The results are described in terms of an extended surface complexation approach. The rate data in HClO4 are used to derive an estimated value of the pH of