Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9633625 | The Journal of Chemical Thermodynamics | 2005 | 5 Pages |
Abstract
By potentiometric measurements using the electrochemical cell: Au, O2, CO2|K2CO3(Au)|KBA(Au)|YSZ|KBA(Au)|Borateglass, NiO, FeOâ£FeNiâ£Au the potassium activity of the heterogeneous phase system K-beta-Al2O3(KBA)/borate glass, MeO/Me has been determined between T = (350 and 670) °C. It is given bylgaK=4.590±0.42-(17044.44±318.6K)/T.The establishment of the potassium chemical potential within the phase system results from the interaction between the borate glass and K-beta-Al2O3 yielding a defined content of potassium oxide that in its turn equilibrates with the oxygen potential coming from the interaction between Me and MeO.
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Authors
H. Näfe, K. Shqau,