| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Kawamura, Genta
in Cooperation with on an Cooperation-Score of 37%
Topics
Places of action
| Organizations | Location | People |
|---|
article
Size effect of the guest cation on the AlO<sub>4</sub>framework in aluminate sodalite-type oxides<i>M</i><sub>8</sub>[Al<sub>12</sub>O<sub>24</sub>](SO<sub>4</sub>)<sub>2</sub>(<i>M</i> = Sr<sup>2+</sup>and Ca<sup>2+</sup>) in the<i>I</i><ovl>4</ovl>3<i>m</i>phase
Abstract
<jats:p>Sr<jats:sub>8</jats:sub>[Al<jats:sub>12</jats:sub>O<jats:sub>24</jats:sub>](SO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>(SAS) and Ca<jats:sub>8</jats:sub>[Al<jats:sub>12</jats:sub>O<jats:sub>24</jats:sub>](SO<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>(CAS) are members of the aluminate sodalite-type oxides with the general chemical formula<jats:italic>M</jats:italic><jats:sub>8</jats:sub>[Al<jats:sub>12</jats:sub>O<jats:sub>24</jats:sub>](<jats:italic>X</jats:italic>O<jats:sub>4</jats:sub>)<jats:sub>2</jats:sub>(<jats:italic>M</jats:italic><jats:sup>2+</jats:sup>is the guest cation and<jats:italic>X</jats:italic>O<jats:sub>4</jats:sub><jats:sup>2−</jats:sup>is the guest anion). To discuss the role of the guest cations (<jats:italic>M</jats:italic><jats:sup>2+</jats:sup>= Sr<jats:sup>2+</jats:sup>and Ca<jats:sup>2+</jats:sup>) on the rotation of AlO<jats:sub>4</jats:sub>in the oxygen tetrahedral framework in the<jats:italic>I</jats:italic><jats:overline>4</jats:overline>3<jats:italic>m</jats:italic>phase, the crystal structure parameters and the probability density function of the guest ions in SAS and CAS have been investigated<jats:italic>via</jats:italic>synchrotron radiation X-ray powder diffraction by considering Gram–Charlier expansions. The interatomic distances between the<jats:italic>M</jats:italic><jats:sup>2+</jats:sup>and O<jats:sup>2−</jats:sup>ions evaluated from the maximum positions in the probability density distribution are almost equal to the sum of the ideal ionic radii of the<jats:italic>M</jats:italic><jats:sup>2+</jats:sup>and O<jats:sup>2−</jats:sup>ions. This result suggests that the geometry of the AlO<jats:sub>4</jats:sub>tetrahedral framework and the fluctuation of the guest ions are mainly caused by steric effects between the<jats:italic>M</jats:italic><jats:sup>2+</jats:sup>and O<jats:sup>2−</jats:sup>ions.</jats:p>