Search results for "Nitroarene reduction"

showing 2 items of 2 documents

PROPERTIES AND APPLICATIONS OF POLYAMINOCYCLODEXTRIN DERIVATIVES

Nel presente lavoro sono state prese in esame le potenziali applicazioni delle poliamminociclodestrine. In particolare, diversi derivati poliamminociclodestrinici (amCD) sono stati ottenuti utilizzando un approccio sintetico diretto, tramite reazione di sostituzione nucleofila tra la heptakis-(6-deossi)-(6-bromo)-βCD (BrβCD) e poliammine lineari. Una volta effettuata l’opportuna caratterizzazione NMR, ESI-MS e potenziometrica, sono state investigate diverse possibili utilizzazioni di tali materiali. Anzitutto, sono state valutate le capacità di dare complessi di inclusione host-guest con diversi derivati organici sia delle amCD libere che di materiali costituiti da nanospugne a base di amCD…

NanospongesPhotoreductionCyclodextrinsNitroarene reductionLangmuir-Hinshelwood modelSettore CHIM/06 - Chimica OrganicaSolid-state NMRPalladium NanoparticlesCatalysisSupramolecular ChemistryPolarimetryPolyaminesGold NanoparticlesGene deliveryAntibacterial activityEnzyme activitySilver Nanoparticles
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Silver nanoparticles stabilized by a polyaminocyclodextrin as catalysts for the reduction of nitroaromatic compounds

2015

Abstract Silver nanoparticles stabilized by means of poly -(6- N , N -dimethyl-propylenediamino)-(6-deoxy)-β-cyclodextrin were synthesized, characterized by different techniques (UV–vis spectroscopy, Dynamic Light Scattering, High Resolution Transmission Electron Microscopy, Fourier-transform IR Spectroscopy) and used as catalysts for the reduction of various nitrobenzene derivatives with sodium borohydride. The nanocomposites obtained appear to have an organized structure, with a metal core surrounded by a layer-structured coating shell. Kinetic data, rationalized in terms of a modified Langmuir–Hinshelwood model, evidenced a non-linear dependence of the reaction rate on the concentration …

Process Chemistry and TechnologyInduction periodInorganic chemistryInfrared spectroscopySettore CHIM/06 - Chimica OrganicaCatalysisSilver nanoparticleCatalysisReaction rateSodium borohydridechemistry.chemical_compoundDynamic light scatteringchemistryPolyaminocyclodextrin Nitroarene reduction Silver nanocompositePhysical and Theoretical ChemistryHigh-resolution transmission electron microscopyJournal of Molecular Catalysis A: Chemical
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