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https://dspace.ffh.bg.ac.rs/handle/123456789/1606| Title: | High temperature phase transformations of cation exchanged zeolites: A new route for synthesis of aluminosilicate materials | Authors: | Dondur, Vera Petranovic, N. Dimitrijevic, R. |
Keywords: | Carnegieite;Eucryptite;Kaliophilite;Kalsilite;Nepheline;Phase Transformation;Zeolites | Issue Date: | 1-Jan-1996 | Journal: | Materials Science Forum | Abstract: | Thermal conversion of zeolites (LTA, SOD, TAU, and GIS) exchanged with monovalent counter ions (Li+, Na+, K+, Rb+, Cs+, NH4+, Ag+, and Tl+) is investigated from ambient temperature to 1400°C The new aluminosilicate phases such as α-eucryplite, Ag-carnegieite as well as KAlSiO4-ANA and CsAlSiO4-ANA are synthesized by this treatment. The mechanisms of phase transformations are elucidated by X-ray, DTA/DSC, and 29Si and 27Al MAS NMR methods. The temperature dependent electric conductivity measurements show that synthesized Ag-carnegieite possesses superionic characteristics whereas β-eucryptite can be classified as a good ionic conductor. |
URI: | https://dspace.ffh.bg.ac.rs/handle/123456789/1606 | ISSN: | 0255-5476 | DOI: | 10.4028/www.scientific.net/msf.214.91 |
| Appears in Collections: | Journal Article |
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