Method for improving the solubility of molybdenum in molybdenum-rich silicate glass and glass melts.

By combining ZrO2 and P2O5 in the glass composition, the solubility of molybdenum in nuclear waste glass is enhanced, addressing phase separation issues and reducing package production costs.

JP2026524904APending Publication Date: 2026-07-24COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES +1
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP Β· JP
Patent Type
Applications
Current Assignee / Owner
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Filing Date
2024-07-05
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing vitrification processes face challenges in incorporating high concentrations of molybdenum in nuclear waste glass without causing phase separation, which limits the solubility and necessitates multiple packages, increasing energy, time, and cost.

Method used

A combination of zirconium dioxide (ZrO2) and phosphorus pentoxide (P2O5) is added to the glass composition to enhance molybdenum solubility, reducing phase separation temperature and maintaining homogeneity, thereby allowing higher molybdenum content in the glass.

Benefits of technology

The synergistic effect of ZrO2 and P2O5 lowers the phase separation temperature, enabling the production of homogeneous molybdenum-rich glass at industrial temperatures, reducing package production and associated costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026524904000004
    Figure 2026524904000004
  • Figure 2026524904000005
    Figure 2026524904000005
  • Figure 2026524904000006
    Figure 2026524904000006
Patent Text Reader

Abstract

The present invention relates to silicate glass comprising 35-45% by mass of silicon dioxide (SiO2), up to 15% by mass of molybdenum trioxide (MoO3), 4-7% by mass of zirconium dioxide (ZrO2), 1-3.5% by mass of phosphorus pentoxide (P2O5), and 14-28% by mass of one or more alkali metal oxides and / or one or more alkaline earth metal oxides, wherein the mass percentages thereof are expressed relative to the total mass of the glass. The present invention also relates to a method for improving the solubility of molybdenum in a glass molten material.
Need to check novelty before this filing date? Find Prior Art