Two different methods have been used to synthesize sodalite for conditioning of chloride salt wastes coming from pyroprocesses: the first one, starting from kaolinite through the intermediate nepheline phase; the second one, starting from silica and sodium aluminate reagents, directly. The obtained products have been characterized by means of several analyses. In particular, different instrumental techniques - stereomicroscopy, scanning electron microscopy (SEM-EDS), density measurements, thermogravimetric analysis, X-rays diffraction, FTIR spectroscopy - were performed revealing that the synthesis from kaolinite is the best method, provided that rigorous conditions are followed. The use of an argon atmosphere for the preparation of pellets of reagents is strictly necessary for the obtainment of a good quality product. © 2009 Materials Research Society.
|Publication status||Published - 2009|
|Event||32nd Symposium on Scientific Basis for Nuclear Waste Management - , Russian Federation|
Duration: 1 Jan 2009 → …
|Conference||32nd Symposium on Scientific Basis for Nuclear Waste Management|
|Period||1/1/09 → …|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
De Angelis, G., Bardez-Giboire, I., Mariani, M., Capone, M., Chartier, M., & Macerata, E. (2009). Synthesis and characterization of sodalite as matrix for conditioning chloride spent salts from pyroprocesses. Paper presented at 32nd Symposium on Scientific Basis for Nuclear Waste Management, Russian Federation.