|
Comment
Synthetic process of Ag7TaSe6 from elements
Thermograph shows the first and second heating and cooling cycles.
On heating FFormation reaction starts above 100 ¨ 142@Phase transition of Ag2Se ¨ 227@Melting of Se@ ¨ 405-545@Formation of Ag7TaSe6 ¨ Tr 601. On coolingFTr 645, 596, 236, 35@
2nd heatingF ¨ Tr 56 i Ag7TaSe6j@
The enthalpy of formation
Based on the reaction over 400`570, the enthalpy of formation becomes ’Hr=-56.2Kcal/mol@ |
