Synthesis of powellite-rich glasses for high level waste immobilizationReport as inadecuate

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* Corresponding author 1 LSI - UMR 7642 - Laboratoire des Solides Irradiés

Abstract : Increasing amounts of MoO3 were added to SiO2-B2O3-Na2O-CaO-Al2O3 glasses in order to trap molybdenum as powellite nominally CaMoO4. Different heat treatments were performed to study their influences on powellite crystallization by X-ray diffraction and EPR. The glass compositions studied in this work lead to glass-ceramics rich in CaMoO4, up to MoO3 = 5 mol% no poorly durable Na2MoO4 phase was identified by XRD. Trivalent actinides surrogates Gd3+ were observed to incorporate into CaMoO4 crystals.

Keywords : Molybdenum Glass-ceramic Powellite XRD EPR

Author: Tatiana Taurines - Bruno Boizot -



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