Controlled Architecture of Solids with Micro-Porosity and Meso-Porosity Obtained by Pillaring of Montmorillonite with an Laniox Binary Oxide
| dc.contributor.author | Skaribas, S. P. | en |
| dc.contributor.author | Pomonis, P. J. | en |
| dc.contributor.author | Grange, P. | en |
| dc.contributor.author | Delmon, B. | en |
| dc.date.accessioned | 2015-11-24T16:54:51Z | |
| dc.date.available | 2015-11-24T16:54:51Z | |
| dc.identifier.issn | 0956-5000 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/10208 | |
| dc.rights | Default Licence | - |
| dc.subject | binuclear metal-complexes | en |
| dc.subject | smectite clay catalysts | en |
| dc.subject | chemical-reactions | en |
| dc.subject | crystal-structure | en |
| dc.subject | delaminated clay | en |
| dc.subject | polyoxo cations | en |
| dc.subject | aluminum | en |
| dc.subject | n,n'-bis(3-carboxysalicylidene)ethylenediamine | en |
| dc.subject | surface | en |
| dc.title | Controlled Architecture of Solids with Micro-Porosity and Meso-Porosity Obtained by Pillaring of Montmorillonite with an Laniox Binary Oxide | en |
| heal.abstract | High-surface-area solids containing both micropores and mesopores have been synthesized by intercalation of the heterobinuclear cation of the complex NiLa(fsaen)NO3 between the layers of montmorillonite clay and calcination at 500-degrees-C. The adsorption mechanism of the complex follows an exchange reaction involving up to 2 mmol of complex cations per g of clay. Further amounts of complex are adsorbed in sites other than exchange ones as shown by zeta-potential experiments. The IR spectra of the intercalated complex showed no major alterations of the complex during adsorption and a stabilization effect and enhancement of the parallel orientation of the clay plates. X-Ray diffraction (XRD) measurements at low angles showed that the pillared clay possesses an interlayer distance of 13.4 angstrom at 500-degrees-C. Its BET surface area reaches a maximum of 220 m2 g-1 at this temperature. The a(s) plots showed a maximum microporosity at less-than-or-equal-to 2 mmol g-1 Additional loading results in transformation to a mesoporous delaminated structure. X-Ray photoelectron spectra (XPS) of the composite materials showed that the ratios La/Si and Ni/Si are lower than those determined by chemical analysis, owing to the shielded environment of the LaNiO(x) pillars in the clay. The same method indicated that for a high degree of loading the aggregates seem to be of perovskite origin. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | 10.1039/FT9928803217 | - |
| heal.identifier.secondary | <Go to ISI>://A1992JX92300016 | - |
| heal.identifier.secondary | http://pubs.rsc.org/en/Content/ArticleLanding/1992/FT/ft9928803217 | - |
| heal.journalName | Journal of the Chemical Society-Faraday Transactions | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1992 | - |
| heal.publisher | The Royal Society of Chemistry | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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