Synergistic Dissolution of Oxides in Molten Sodium Sulfate
Open accessAbstract
The dissolution kinetics of pure and pure powders, respectively, into , were each measured and compared with those for the same oxides during simultaneous dissolution of the mixed oxide powders in the same environment. For dissolution of mixed oxides, accelerated kinetics for each oxide resulted from an acid‐base coupling reaction. Measurements of the changes in the and oxygen activities in the melt during oxide dissolution suggest that the dissolution reaction for the single oxides is controlled by the diffusion of (as ). Therefore, the enhanced dissolution kinetics for mixed oxides is interpreted in terms of a synergistic reaction to promote this diffusion step.
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Hwang and Rapp demonstrated this mechanism by measuring the dissolution rate of Cr2O3, Fe2O3, and the mixture of both oxides in pure Na2SO4 with a melt basicity of 12 at 1200 K.
“Hwang and Rapp demonstrated this mechanism by measuring the dissolution rate of Cr2O3, Fe2O3, and the mixture of both oxides in pure Na2SO4 with a melt basicity of 12 at 1200 K, respectively [106].”
From A review on molten sulfate salts induced hot corrosion (2021) · cites this paper as [106]
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A review on molten sulfate salts induced hot corrosion
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- Authors
- Hwang, Y., & Rapp, R. A.
- Affiliations
- The Ohio State University (US)
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 1990-04-01
- Volume
- 137
- Issue
- 4
- Pages
- 1276-1280
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W2083365816
- Cited by
- 69
- References
- 0
- Citations by year
- 2026: 2 · 2025: 6 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 4 · 2020: 8 · 2019: 4 · 2018: 2 · 2016: 2 · 2015: 6 · 2013: 1 · 2012: 1
- FWCI
- 1.13
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Journal of The Electrochemical Society (publishedVersion)
- Funders
- Ohio State University
- Topics
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Molten salt chemistry and electrochemical processes
- Physical Sciences › Engineering › Mechanical Engineering › Metallurgical Processes and Thermodynamics
- Physical Sciences › Materials Science › Ceramics and Composites › Glass properties and applications
- Keywords
- oxide dissolution, mixed oxide powders, dissolution kinetics, oxygen activity, sulfur activity, diffusion-controlled reaction, molten salt electrolysis
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