Sol-Gel Processing of Silica Nuclear Waste Glasses

Autor:	Andrzej Deptuła, Magdalena Miłkowska, Wiesława Łada, Tadeusz Olczak, Danuta Wawszczak, Tomasz Smolinski, Fabio Zaza, Marcin Brykala, Andrzej G. Chmielewski, Kenneth C. Goretta
Rok vydání:	2011
Předmět:	Thermogravimetric analysis Materials science Infrared spectroscopy Actinide Leaching (metallurgy) Thermal treatment Ascorbic acid Sol-gel Catalysis Nuclear chemistry
Zdroj:	New Journal of Glass and Ceramics. :105-111
ISSN:	2161-7562 2161-7554
DOI:	10.4236/njgc.2011.13015
Popis:	A complex Sol-Gel process has been used for synthesis of silica glasses designed to contain high-level nuclear wastes. Cs, Sr, Co, and Nd (generically denoted Me) were used, the last as surrogate for actinides. Gels in the form of powders and sintered compacts were prepared by hydrolysis and polycondensation of tetraethoxide/Me nitrate solutions, which contained ascorbic acid as a catalyst. Thermal treatment studies were conducted on the resulting gels. Transformation to final products was studied by thermogravimetric analysis, infrared spectroscopy, and X-ray diffraction. Preliminary testing of Me leaching was also completed in quiescent water. Only a single dense form was resistant to leaching
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee0adb25de63ae196f4fc030e4d134a7 https://doi.org/10.4236/njgc.2011.13015 Zobrazit plný text záznamu