| dc.creator | Cabello, Carmen Inés | |
| dc.creator | Botto, Irma Lía | |
| dc.creator | Filace, Ricardo Julián | |
| dc.creator | Cordischi, Dante | |
| dc.creator | Minelli, Giuliano | |
| dc.creator | Occhiuzzi, Manlio | |
| dc.creator | Porta, Piero | |
| dc.date | 2007 | |
| dc.date | 2022-06-15T13:48:40Z | |
| dc.date.accessioned | 2023-07-15T05:03:15Z | |
| dc.date.available | 2023-07-15T05:03:15Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/137939 | |
| dc.identifier | issn:1380-2224 | |
| dc.identifier | issn:1573-4854 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7471910 | |
| dc.description | The synthesis of intercluster porous nanocomposites obtained from polyoxometallate compounds such as the [AlO₄Al₁₂(OH)₂₄(H₂O)₁₂] ⁷⁺ cation (named Al₁₃) and the Anderson-type [Al₁₋ₓ Crₓ Mo₆O₂₄H₆ ]³⁻ anion [Al₁₋ₓ Crₓ Mo₆O₂₄H₆] has been performed in order to study the interaction between the two cluster ions, the stability of the XMo₆ planar configuration, the products obtained after thermal treatment, the structure and the local symmetry of the Cr³⁺ species. Chemical, thermal, structural and spectroscopic characterizations of the original and thermally treated phases have been followed by different techniques such as TG-DTA, XRD, SEM-EDAX, and mainly by EPR.
All the results have shown that the structure of the intercluster nanocomposites (Al₁₃)(Al₁₋ₓ Crₓ Mo₆)₂ precursors is similar to that reported by Son et al. for the chromium-free (Al₁₃)(AlMo₆)₂ intercluster nanocomposite [Son et al., J.
Am. Chem. Soc. 122 (2000) 7432]. After thermal treatment in air at several temperatures of the (Al₁₃)(Al₁₋ₓ Crₓ Mo₆)₂ nanocomposites the following phases have been observed and characterised: (i) at 400 ºC an amorphous phase containing dispersed Cr³⁺ ions; (ii) at 700 C a crystalline phase corresponding to Cr₂(MoO₄)₃/Al₂(MoO₄)₃ solid solutions; (iii) at 950 ºC αAl₂O₃/Cr₂O₃ solid solutions with a random dispersion of the Cr³⁺ ions. | |
| dc.description | Centro de Investigación y Desarrollo en Ciencias Aplicadas | |
| dc.description | Centro de Química Inorgánica | |
| dc.format | application/pdf | |
| dc.format | 331-337 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Química | |
| dc.subject | Nanocomposites | |
| dc.subject | Interclusters | |
| dc.subject | Inorganic materials | |
| dc.subject | Pillared compounds | |
| dc.title | Intercluster porous nanocomposites from combination of [AlO₄ Al₁₂(OH)₂₄(H₂O)₁₂]⁷⁺ cation and Anderson-type [Al₁₋ₓ Crₓ Mo₆O₂₄H₆]³⁻ anion: XRD, TG-DTA, SEM-EDAX and EPR studies | |
| dc.type | Articulo | |
| dc.type | Articulo | |
