Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing
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2017
Authors
Omerašević, MiaRužić, Jovana
Vasiljević-Nedić, Bojana
Baščarević, Zvezdana D.
Bučevac, Dušan
Orlić, Jovana
Matović, Ljiljana
Article (Published version)
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Show full item recordAbstract
Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.
Keywords:
Cs disposal / Ion exchange / Clinoptilolite / Hot-pressing / CAS phaseSource:
Ceramics International, 2017, 43, 16, 13500-13504Funding / projects:
- Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
- The effect of nano- and microconstituents on the synthesis and characteristics of novel composite materials with metal matrix (RS-MESTD-Basic Research (BR or ON)-172005)
DOI: 10.1016/j.ceramint.2017.07.055
ISSN: 0272-8842; 1873-3956
WoS: 000411299300059
Scopus: 2-s2.0-85024498518
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VinčaTY - JOUR AU - Omerašević, Mia AU - Ružić, Jovana AU - Vasiljević-Nedić, Bojana AU - Baščarević, Zvezdana D. AU - Bučevac, Dušan AU - Orlić, Jovana AU - Matović, Ljiljana PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1734 AB - Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate. T2 - Ceramics International T1 - Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing VL - 43 IS - 16 SP - 13500 EP - 13504 DO - 10.1016/j.ceramint.2017.07.055 ER -
@article{ author = "Omerašević, Mia and Ružić, Jovana and Vasiljević-Nedić, Bojana and Baščarević, Zvezdana D. and Bučevac, Dušan and Orlić, Jovana and Matović, Ljiljana", year = "2017", abstract = "Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.", journal = "Ceramics International", title = "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing", volume = "43", number = "16", pages = "13500-13504", doi = "10.1016/j.ceramint.2017.07.055" }
Omerašević, M., Ružić, J., Vasiljević-Nedić, B., Baščarević, Z. D., Bučevac, D., Orlić, J.,& Matović, L.. (2017). Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International, 43(16), 13500-13504. https://doi.org/10.1016/j.ceramint.2017.07.055
Omerašević M, Ružić J, Vasiljević-Nedić B, Baščarević ZD, Bučevac D, Orlić J, Matović L. Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International. 2017;43(16):13500-13504. doi:10.1016/j.ceramint.2017.07.055 .
Omerašević, Mia, Ružić, Jovana, Vasiljević-Nedić, Bojana, Baščarević, Zvezdana D., Bučevac, Dušan, Orlić, Jovana, Matović, Ljiljana, "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing" in Ceramics International, 43, no. 16 (2017):13500-13504, https://doi.org/10.1016/j.ceramint.2017.07.055 . .