Please use this identifier to cite or link to this item:
https://dspace.ffh.bg.ac.rs/handle/123456789/1644
Title: | The thermal transformation of Na LiA zeolites. A new polymorph in the system Li<inf>2</inf>OAl<inf>2</inf>O<inf>3</inf>SiO<inf>2</inf> | Authors: | Dondur, Vera Dimitrijević, Radovan |
Issue Date: | 1-Jan-1986 | Journal: | Journal of Solid State Chemistry | Abstract: | High-temperature phase transformations of A zeolite with various degrees of exchange of Na+ with Li+ ions were investigated. An increase in the number of Li+ ions per unit cell accelerates the thermal transformation of the zeolite framework to the amorphous state. Above 730°C, four phases (carnegieite, nepheline, β-eucryptite, and a new phase-γ-eucryptite) were identified. Only γ- and β-eucryptite phases were obtained from pure LiA zeolite. γ-eucryptite is a new metastable polymorph in the system Li2OAl2O3SiO2. γ-eucryptite a0 = 7.231(3)Å, b0 = 10.270(6) Å, c0 = 12.054(7) Å) is transformed to β-eucryptite (a0 = 10.533(5) Å, c0 = 11.148(5) Å) above 840°C. © 1986. |
URI: | https://dspace.ffh.bg.ac.rs/handle/123456789/1644 | ISSN: | 0022-4596 | DOI: | 10.1016/0022-4596(86)90150-7 |
Appears in Collections: | Journal Article |
Show full item record
SCOPUSTM
Citations
37
checked on Dec 31, 2024
Page view(s)
15
checked on Jan 4, 2025
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.