High-temperature chemistry

In this teaching unit, a general approach to high-temperature chemistry in non-aqueous solvents will be developed through notions of chemical reactivity, and the physico-chemical and thermochemical properties of oxides, salts or molten metals. A number of case studies will be covered, particularly in connection with the fuel cycle and recycling chemistry.

Hourly volumes* :

            CM: 12h

            TD : 8h

The objective of this teaching unit is to present the properties of non-aqueous solvents at high temperatures (molten salts excluding oxides, liquid metals) and physicochemical phenomena (solvation, non-protonic acidity, oxidation-reduction) in order to help understand the processes of glass production and purification of materials by pyrometallurgical means.

Basics of radioactivity

Solution chemistry applied to actinides

Final inspection

Description of characterization methods and analytical tools for reactions carried out at high temperatures.

• General properties of oxides, salts or molten metals
• Thermochemical properties: Cp, ΔH _f , S
• Concept of non-protonic acidity (oxo-acidity, halo-acidity) - Experimental methods
• Fusion control: synthesis protocol, high temperature oxidation-reduction reactions - Examples of industrial processes.
• Chemical activity in molten salts and liquid metals - Experimental methods
• Chemical reactivities of precursors at high temperatures and structural models of glasses
• Phase partition coefficients
• Electrical and thermal conductivities, diffusion phenomena
• Structures and dynamics of molten oxides, rheological behavior (experimental methods)
• Thermal stability of cast irons: germination, demixing growth, devitrification
• Case studies:

- Oxide cast irons

- Production and purification of highly reactive metals (Al, Li, Zr, etc.) and/or radioactive metals (U, Pu).

Administrative contact(s): Master of Chemistry secretariat

master-chimie @ umontpellier.fr (master-chimie @ umontpellier.fr)