Patent ID: 8309784

Claim:
A process for containment of a material, the process comprising: (a) preparing a redox glass frit; (b) mixing and hot-melting the redox glass frit and a material comprising at least one oxidizable or reducible chemical species; and (c) vitrifying the mixture wherein the material comprising at least one oxidizable or reducible chemical species is contained; wherein the redox glass frit is prepared by a process comprising: (a 1 ) selecting at least one redox couple for maintaining the at least one oxidizable or reducible chemical species in a redox equilibrium; (a 2 ) determining the amount of the at least one oxidizable or reducible chemical species present for a given amount of the material; (a 3 ) determining by stoichiometry, for a given amount of the material, the minimum amount of the at least one redox couple to maintain the at least one oxidizable or reducible chemical species at the given redox equilibrium; (a 4 ) optionally, adjusting the minimum amount of the at least one redox couple to account for other oxidizing or reducing elements of the material and/or of the raw glass frit and/or of a vitrification environment; (a 5 ) incorporating by mixing, at least the minimum amount of the at least one redox couple or the adjusted minimum amount of the at least one redox couple into an amount of raw glass frit, or of its precursors, wherein the amount of raw glass frit is suitable for the containment of the given amount of material, and bringing the mixture to a temperature sufficient to obtain a glass melt; and (a 6 ) cooling and working the glass melt to form the redox glass frit.