Please use this identifier to cite or link to this item:
https://dspace.ffh.bg.ac.rs/handle/123456789/1600| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Dimitrijević, Radovan | en_US |
| dc.contributor.author | Dondur, Vera | en_US |
| dc.date.accessioned | 2022-12-21T16:08:36Z | - |
| dc.date.available | 2022-12-21T16:08:36Z | - |
| dc.date.issued | 2007-01-01 | - |
| dc.identifier.issn | 0352-5139 | en |
| dc.identifier.uri | https://dspace.ffh.bg.ac.rs/handle/123456789/1600 | - |
| dc.description.abstract | The thermal behaviours of fully Mg2+ cation exchanged LTA, FAU (X and Y species), GIS and SOD zeolites were investigated in the temperature range from ambient to 1400°C. The initial zeolite frameworks collapsed into amorphous intermediate substances after air heating between 800-850°C. Prolonged annealing of these products above 850°C induced recrystallization into sapphirine-like phases (Mg-LTA and Mg-FAUx zeolites) and μ-cordierite (Mg-FAUy and Mg-GIS zeolites) phases. These phases were unstable during further temperature/time treatment and between 1000-1100°C they polymorphously transformed into γ-cordierite, a new Mg2Al4Si5O18 polymorph. γ-Cordierite was formed as a transformation product from the investigated zeolite precursors, except for the Mg-SOD zeolite. Structurally the γ-cordierite phase is a modulated, Mg-stuffed derivative of cristobalite with the approximate composition Mg2Al4Si 5O18, which precedes the appearance of α-cordierite. The orthorhombic unit cell dimensions calculated from X-ray powder diffraction pattern are: a = 16.387(7) Å, b = 8.835(4) Å, c = 7.853(3) Å. γ-Cordierite has a narrow range of temperature stability (1100-1200°C) and during prolonged temperature/time treatment, it is polymorphously transformed to the α-cordierite phase. | en |
| dc.relation.ispartof | Journal of the Serbian Chemical Society | en |
| dc.subject | Phase stability | en |
| dc.subject | Thermal conversion | en |
| dc.subject | γ-cordierite new polymorph | en |
| dc.title | Thermally induced conversion of Mg<sup>2+</sup> cation exchanged LTA, FAU, GIS and SOD zeolites: Syntheses and characterization of γ-cordierite, a new Mg<inf>2</inf>Al<inf>4</inf>Si<inf>5</inf>O<inf>18</inf> polymorph | en_US |
| dc.type | Article | en_US |
| dc.identifier.doi | 10.2298/JSC0712351D | - |
| dc.identifier.scopus | 2-s2.0-36949001568 | - |
| dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/36949001568 | - |
| dc.relation.firstpage | 1351 | en |
| dc.relation.lastpage | 1362 | en |
| dc.relation.issue | 12 | en |
| dc.relation.volume | 72 | en |
| item.fulltext | No Fulltext | - |
| item.grantfulltext | none | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.openairetype | Article | - |
| item.cerifentitytype | Publications | - |
| crisitem.author.orcid | 0000-0003-3507-3966 | - |
| Appears in Collections: | Journal Article | |
SCOPUSTM
Citations
3
checked on Jan 6, 2025
Page view(s)
17
checked on Jan 6, 2025
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.