Towards a Silicate Matrix for the Immobilisation of Halide-rich Wastes

Autor:	M. R. Gilbert
Rok vydání:	2013
Předmět:	Materials science Halide Pyroprocessing Silicate law.invention chemistry.chemical_compound chemistry Chemical engineering law visual_art Sodalite visual_art.visual_art_medium Calcination Ceramic Inert gas Solid solution
Zdroj:	MRS Proceedings. 1518:91-96
ISSN:	1946-4274 0272-9172
DOI:	10.1557/opl.2013.927
Popis:	Single-phase calcium chlorosilicate and sodalite, two potential ceramic waste-forms for the immobilisation of CaCl2-based pyroprocessing wastes, have been fabricated at temperatures below the volatilisation point of CaCl2. Solid solutions doped with Sm3+ as an inactive analogue for trivalent actinides have been fabricated and characterised. XRD analysis shows both phases will successfully accommodate Sm3+, with the sodalite in particular remaining single-phase. Fabrication of Sm-doped calcium chlorosilicate in air results in the formation of SmOCl and Ca(Si2O5) secondary phases, however, calcination in an inert atmosphere is shown to successfully retard the formation of SmOCl allowing for higher levels of doping.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::da84aee6cc7a60e0d38013245f301fc6 https://doi.org/10.1557/opl.2013.927 Zobrazit plný text záznamu Full text from SpringerLink