Hybrid Ionosilica containing aromatic groups

Ionosilicas are defined as mesostructured silica based materials bearing covalently bound ionic groups. These materials, situated at the interface of ionic liquids and structured silica mesophases, are usually synthesized following template directed hydrolysis-polycondensation procedures starting from silylated ionic compounds. Here, we report new ammonium type hybrid ionosilicas containing aromatic groups which can serve as a new platform for the design of functional materials, for applications in the areas of ion exchange reactions, drug delivery or wastewater treatment

Removal of three anionic orange-type dyes and Cr (VI) oxyanion from aqueous solutions onto strongly basic anion-exchange resin. The effect of single-component …

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Pd@ionosilica as heterogeneous hydrogenation catalyst for continuous flow reductive upgrade of cinnamaldehyde

Background: The effective exploitation of biomass for the preparation of fuels and platform chemicals requires the development of novel catalysts and catalytic methods. In this regard, ionosilicas appear as promising candidates due to their properties and tenability. Results: A novel Pd@ionosilica is prepared by a straightforward ion exchange method based on amorphous ionosilica and sodium tetrachloropalladate. The resulting hybrid material is evaluated as catalyst for the continuous flow reduction of cinnamaldehyde as exemplary biorefinery case study. Conclusion: This work reports the application of metal@ionosilica hybrid materials as catalysts for the continuous flow upgrade of bio-sourced molecules, showing promising results in the case of cinnamaldehyde, here used as exemplary compound. The findings disclosed in this paper provide interesting insights for the development of second generation metal@ionosilica composites for catalytic applications within biorefinery

Ionosilicas as efficient adsorbents for the separation of diclofenac and sulindac from aqueous media

Mesoporous ionosilicas bearing ammonium groups appear as versatile adsorbent for anionic drugs. High amounts of the anionic drugs diclofenac and sulindac are irreversibly trapped within the materials whereas neutral species are hardly adsorbed. Our results open the route towards new ionic materials for wastewater treatment via ion exchange

Relation structures-propriétés vis-à-vis de l’immobilisation des radionucléides dans des échangeurs silicates microporeux

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