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- Title
Some synthesis aspects for poorly crystalline porous sodium titanium silicate.
- Authors
Tarnovsky, D. V.; Chepurna, I. K.; Meleshevych, S. I.; Davydov, V. I.; Romanova, I. V.
- Abstract
New approaches to synthesize poorly crystalline titanium silicate Na2Ti2SiO7·2H2O which possesses the selectivity to adsorb cesium radionuclides by using inorganic precursors have been proposed. The mechanism of the reaction in this system has been studied. It has been found the optimal ratio of the reagents in the reaction. The experiments proved that the amount of alkali in the reaction has to meet the stoichiometry requirements and the ratio of H2O2/TiO2 more than 3 appeared to be unnecessary. The morphology of the samples obtained has been characterized using X-ray powder diffraction (XRD), low-temperature nitrogen adsorption (Brunauer–Emmett–Teller and Barrett–Joyner–Halenda methods), atomic adsorption analysis and radiometric method. The adsorption capacity of adsorbents made from titanium silicate at optimal temperature has been shown to be the same as that of their well-known analogs of crystalline structure and same materials obtained by another method. Among Langmuir, Freundlich and Temkin models, Langmuir model fits well for Cs+ sorption by this adsorbent.
- Subjects
TITANIUM silicate; SOLUBLE glass; CESIUM; X-ray powder diffraction; RADIOMETRIC methods; NUCLEAR activation analysis
- Publication
Research on Chemical Intermediates, 2022, Vol 48, Issue 5, p2253
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-022-04691-z