Please use this identifier to cite or link to this item:
https://dspace.ffh.bg.ac.rs/handle/123456789/1607| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Dimitrijevic, R. | en_US |
| dc.contributor.author | Dondur, Vera | en_US |
| dc.date.accessioned | 2022-12-21T16:08:37Z | - |
| dc.date.available | 2022-12-21T16:08:37Z | - |
| dc.date.issued | 1995-02-15 | - |
| dc.identifier.issn | 0022-4596 | en |
| dc.identifier.uri | https://dspace.ffh.bg.ac.rs/handle/123456789/1607 | - |
| dc.description.abstract | High-temperature phase transformations of K-LTA zeolite were investigated in the temperature range 800-1800°C. The nano-structured KAlSiO4 precursor was prepared at 850°C and after annealing at 1000°C, the first polymorph of KAlSiO4, synthetic kaliophilite was formed. With increasing temperature, the following polymorphs were synthesized: kalsilite (1100°C), low KAlSiO4-O1 (1200°C), KAlSiO4-ANA (1300°C), and high KAlSiO4-O2 at (1430°C). Synthetic kaliophilite and KAlSiO4-ANA phases are the new polymorphs in the system studied. Consequently, the KAlSiO4-ANA phase is the ANA-type end member of the zeolite framework having the ratio Si/Al = 1. From XRD powder patterns a distorted leucite unit cell for a KAlSiO4-ANA phase was calculated: a0 = 13.638(6) Å, b0 = 13.811(8) Å, c = 13.817(9) Å, α0 = 99.98(4)°, β0 = 102.28(4)°, and γ0 = 62.80(4)°. 29Si MAS NMR chemical shifts at -89.08 and -98.01 ppm suggest that the KAlSiO4-ANA phase has an ordered framework cation topology. © 1995 Academic Press. All rights reserved. | en |
| dc.relation.ispartof | Journal of Solid State Chemistry | en |
| dc.title | Synthesis and characterization of KAlSiO<inf>4</inf> polymorphs on the SiO<inf>2</inf>-KAlO<inf>2</inf> join | en_US |
| dc.type | Article | en_US |
| dc.identifier.doi | 10.1006/jssc.1995.1123 | - |
| dc.identifier.scopus | 2-s2.0-33751302819 | - |
| dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/33751302819 | - |
| dc.relation.firstpage | 214 | en |
| dc.relation.lastpage | 224 | en |
| dc.relation.issue | 1 | en |
| dc.relation.volume | 115 | en |
| item.openairetype | Article | - |
| item.fulltext | No Fulltext | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.grantfulltext | none | - |
| item.cerifentitytype | Publications | - |
| crisitem.author.orcid | 0000-0003-3507-3966 | - |
| Appears in Collections: | Journal Article | |
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