The effect of silylation on titanium-containing silica catalysts for the epoxidation of functionalised molecules

Matteo Guidotti, Isabelle Batonneau-Gener, Enrica Gianotti, Leonardo Marchese, Samuel Mignard, Rinaldo Psaro, Maila Sgobba, Nicoletta Ravasio

Risultato della ricerca: Contributo su rivistaArticolo in rivistapeer review

Abstract

The epoxidation of functionalised substrates of interest as fine chemicals using mesoporous titanium-containing silicas is here reported and the role of silylation in changing the surface hydrophilic character of these catalysts is investigated. The silylation procedure was carried out on two titanium-grafted silicas with different morphologies. An ordered MCM-41 and a non-ordered commercial mesoporous silica were used as supports. The reactivity of bulky substrates with different characteristics (limonene, α-terpineol, carveol and methyl linoleate) is studied and compared. The effect of silylation is more pronounced on Ti-MCM-41 than with low-surface area Ti-SiO2 and it is shown that the catalytic performances are strongly dependent on the nature of the reactant. Purely alkenic molecules show better reactivity over silylated catalysts than over non-silylated ones. On the other hand, a hydrophilic environment around the titanium active sites has often a beneficial effect in the epoxidation of richly functionalised substrates.

Lingua originaleInglese
pagine (da-a)39-47
Numero di pagine9
RivistaMicroporous and Mesoporous Materials
Volume111
Numero di pubblicazione1-3
DOI
Stato di pubblicazionePubblicato - 15 apr 2008

Fingerprint

Entra nei temi di ricerca di 'The effect of silylation on titanium-containing silica catalysts for the epoxidation of functionalised molecules'. Insieme formano una fingerprint unica.

Cita questo