Abstract
The immobilization of strontium over titania was carried out by the method of coprecipitation. From a preliminary study, an appreciable uptake (52.8%) of90Sr was observed over preformed titania material. A weighable amount of strontium was coprecipitated with Ti(IV) hydroxide and a maximum of ∼ 34 wt% Sr was found to be adsorbed. The leachability of the mixed materials prepared by the addition of 250 and 400 mg Sr2+, calcined at 1000 °C, by soxhlet apparatus refluxing at 97 °C and repeated seven times at intervals of 24 h, was found to be of the order of 10−9 and 10−5 g cm−2 d−1, respectively. X-ray powder diffraction analysis revealed that strontium was immobilized in the crystalline matrix of rutile, which suffered some structural changes with the formation of new phases, SrTiO3+Sr2TiO4 and SrTiO3, respectively.
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Bhattacharyya, D.K., Dutta, N.C. A study of the immobilization of strontium over crystalline titania. J Mater Sci 30, 2248–2250 (1995). https://doi.org/10.1007/BF01184567
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DOI: https://doi.org/10.1007/BF01184567