Thermochemistry of Metal Nitrides in the Ca/Zn/N System
Autor: | J. M. McHale, Glen R. Kowach, Alexandra Navrotsky, Francis J. DiSalvo |
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Rok vydání: | 1996 |
Předmět: | |
Zdroj: | Chemistry - A European Journal. 2:1514-1517 |
ISSN: | 1521-3765 0947-6539 |
DOI: | 10.1002/chem.19960021207 |
Popis: | The energetics of ternary oxide formation is reasonably well understood, but little is known of the energetics of ternary nitride formation. We have developed new procedures for high-temperature oxide melt solution calorimetry on metal nitrides and employed them to study compounds in the Ca/Zn/N system. The calorimetry utilized the easy reduction of MoO3 in the solvent to supply a pathway for rapid oxidation of “N3–” to N2 gas. These experiments represent the first high-temperature solution calorimetry of ternary metal nitrides. The results indicate that Ca3N2 acts as a basic nitride analogous to CaO in oxide systems, while Zn3N2 acts as an acidic nitride (“N3–” acceptor) in this ternary nitride system. |
Databáze: | OpenAIRE |
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