Ionic liquid immobilization on carbon nanofibers and zeolites: Catalyst design for the liquid-phase toluene chlorination - 18/03/15
, Benoît Louis a, ⁎ , Francisco Montilla b, José Antonio Odriozola bBenvenuto su EM|consulte, il riferimento dei professionisti della salute.
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Abstract |
The environmental-friendly chlorination reaction of toluene by trichloroisocyanuric acid (TCCA, C3N3O3Cl3) was investigated applying immobilized ionic liquids (ILs) on different supports. Ionic liquids were grafted either on carbon nanofibers (CNF) or encapsulated in zeolites. Their influence on the chlorination activity as well as on the selectivity in different chlorinated products was studied. An unusually high selectivity toward meta-chlorotoluene was achieved, up to 36%. Hence, the selectivity could be tuned to produce either expected ortho-/para-chlorotoluene or meta-chlorotoluene with a proper support choice.
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La réaction de chloration du toluène par l’acide trichloroisocyanurique (TCCA) catalysée par des liquides ioniques immobilisés sur des nanofibres de carbone (IL/CNF) ou encapsulés dans des zéolithes (IL/zéolithe) a été étudiée. Un comportement particulier a été observé pour le système IL/CNF, donnant lieu à une sélectivité très élevée de 36 % en l’isomère méta-chlorotoluène. En adaptant la nature du support, on peut aisément moduler la sélectivité envers les différents isomères.
Il testo completo di questo articolo è disponibile in PDF.Keywords : Ionic liquids, Aromatic chlorination, Zeolite, Pi-stacking
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Vol 18 - N° 3
P. 324-329 - marzo 2015 Ritorno al numero
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