Jacob, Thomas K and Jayadevan, Kampurath P and Waseda, Yoshio (1998) Electrochemical Determination of the Gibbs Energy of Formation of $MgAl_2O_4 $. In: Journal of the American Ceramic Society, 81 (1). pp. 209-221.
Full text not available from this repository. (Request a copy)Abstract
The standard Gibbs energy of formation of the spinel $MgAl_2O_4$ from component oxides, MgO and alpha-$Al_2O_3$, has been determined in the temperature range 900 to 1250 K using a solid-state cell incorporating single-crystal $CaF_2$ as the solid electrolyte. The cell can be represented as--$Pt,O_2,MgO+MgF_2|CaF_2|MgF_2+MgAl_2O_4+alpha-Al_2O_3,O_2,Pt$--The standard Gibbs energy of formation from binary oxides, computed from the reversible emf, can be represented by the expression--capdelta $G^o_{f,ox}$ = -23600 - 5.91 $\tau$ (±150) J/mol--The ``second-law'' enthalpy of formation of $MgAl_2O_4$ obtained in this study is in good agreement with high-temperature solution calorimetric studies reported in the literature.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of the American Ceramic Society |
| Publisher: | Blackwell |
| Additional Information: | Presently DOI is not working.Copyright of this article belongs to Blackwell. |
| Department/Centre: | Division of Chemical Sciences > Materials Research Centre |
| Date Deposited: | 20 Nov 2006 |
| Last Modified: | 27 Aug 2008 12:15 |
| URI: | http://eprints.iisc.ac.in/id/eprint/7954 |
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