Fabrication of Li2TiO3 spherical microparticles from TiCl4 by a classical, inorganic sol-gel route; Characteristics and tritium release properties

A. Deptula, T. Olczak, W. Lada, B. Sartowska, A.G. Chmielewski, C. Alvani, P.L. Carconi, A. Di Bartolomeo, F. Pierdominici, S. Casadio

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Abstract

Medium sized spherical particles of Li2TiO3(with diameters below 100 μm) can be fabricated by a classical, inorganic sol-gel process, from commercially available TiCl4. Elaborated process consists of the following main steps: (1) dissolving of TiCl4in concentrated aqueous HCl; (2) formation of sol emulsion in 2-ethylhexanol-1 containing the surfactant SPAN-80 (EH); (3) gelation of emulsion drops by extraction of water with partially dehydrated EH; (4) impregnation of gel to Li:Ti molar ratio (MR) = 2; (5) thermal treatment at 1200°C. This temperature can be significantly lowered (to 750°C) by chemical treatment of chloride precursors (gels or starting solution TiCl4) with aq. ammonia or better with nitric acid. Tritium release from sol-gel made Li2TiO3micro-spheres were found very close to that observed for other traditional materials, however for the first sample process starts slightly earlier. © 2002 Kluwer Academic Publishers.
Original languageEnglish
Pages (from-to)2549 - 2556
Number of pages8
JournalJournal of Materials Science
Volume37
Issue number12
DOIs
Publication statusPublished - 15 Jun 2002
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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