High-temperature oxide melt solution calorimetry with molten 2PbO·B2O3 as a solvent can be used for determining enthalpies of formation of carbonates and hydrous silicates. Under conditions of gas flow at 1−2 cm3/s, all H2O and CO2 is expelled from the solvent, leading to a reproducible final thermodynamic state. Both analytical data and a number of thermodynamic cycles show that, under these conditions, the volatiles neither dissolve in nor interact energetically with the melt.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.