Organic-inorganic hybrid saponites obtained by intercalation of titano-silsesquioxane

Fabio Carniato, Chiara Bisio, Giorgio Gatti, Matteo Guidotti, Laura Sordelli, Leonardo Marchese

Research output: Contribution to journalArticlepeer-review

Abstract

The synthesis and characterization of two bifunctional composite materials based on synthetic saponite clays is here presented. These materials were prepared by intercalation of a Ti-containing aminopropylisobutyl polyhedral oligomeric silsesquioxane (Ti-NH2POSS) in synthetic saponite samples containing interlayer sodium (Na-SAP) or protons (H-SAP). Hybrid organic-inorganic materials, Ti-NHM-1 and Ti-NHM-2, were obtained upon ion exchange. Structural, spectroscopic, and thermal properties of both hybrid materials were investigated in detail along with their catalytic activity in cyclohexene oxidation. In questo lavoro sono descritte la sintesi e la caratterizzazione di due materiali compositi bifunzionali a base di saponiti sintetiche. Tali materiali sono stati preparati tramite intercalazione di Ti-aminopropilisobutilPOSS (Ti-NH2POSS) in saponiti sintetiche contenenti nello spazio interlamellare ioni sodio (Na-SAP) o protoni (H-SAP). Tali materiali compositi ibridi organici/inorganici, denominati rispettivamente Ti-NHM-1 e Ti-NHM-2, sono stati sintetizzati tramite reazioni di scambio ionico. Sono state studiate in dettaglio sia le proprietà strutturali, spettroscopiche e termiche di tali ibridi, che la loro attività catalitica per l'ossidazione del cicloesene. Two hybrid materials, Ti-NHM-1 and Ti-NHM-2, were prepared by the intercalation of a bifunctional titanium-containing silsesquioxane Ti-NH3POSS in the interlayer spaces of synthetic sodium and protonic saponites, respectively. The bifunctional character (acid and redox) of Ti-NHM-2 was also investigated in detail.

Original languageEnglish
Pages (from-to)914-921
Number of pages8
JournalChemistry - An Asian Journal
Volume6
Issue number3
DOIs
Publication statusPublished - 1 Mar 2011

Keywords

  • clays
  • organic-inorganic hybrids
  • saponites
  • silsesquioxanes
  • titanium

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