""Solvated platinum atoms, obtained by metal vapour synthesis (MVS), were conveniently used to prepare γ-iron oxide and γ-alumina supported Pt catalysts containing small metalnanoparticles of controlled size,ranging 0.5 – 3.0 nm in diameter (HRTEM). The γ-Fe2O3-supported Pt system showed higher catalytic activity and selectivity thanthose of a similarly prepared γ-Al2O3-supported system in the selective hydrogenation reactions of p- and o-chloronitrobenzeneto the corresponding haloanilines,in mild reaction conditions (25 °C, 0.1 MPa hydrogen pressure) (p-chloronitrobenzene: Specific Activity (SA) = 59.5 min-1,Selectivity = 99.9%; o-chloronitrobenzene: SA = 42.8 min-1, Sel.99.2%). The Pt\\\/γ-Fe2O3 systemalso showed high catalytic efficiency (Sel. > 98%, at 100% of conversion) inthe selective hydrogenationsof m-chloro-, p- and o-bromo- and p- and o-iodo- nitrobenzenes. XPS structural studies performed on a pristine Pt\\\/γ-Fe2O3sample as well as on a sample recovered after the reaction,indicate that the catalytic process did not induce permanent modification in the chemical and\\\/or electronic structure of the catalyst according with the high reusability of the system.""

Claudio, E., Laura Antonella, A., Maria, B., Gianmario, M., Battocchio, C., Polzonetti, G. (2013). Chemoselective hydrogenation of halonitroaromatics over γ-Fe2O3-supported platinum nanoparticles: The role of the support on their catalytic activity and selectivity. JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL, 366, 288-293 [10.1016/j.molcata.2012.10.007].

Chemoselective hydrogenation of halonitroaromatics over γ-Fe2O3-supported platinum nanoparticles: The role of the support on their catalytic activity and selectivity

BATTOCCHIO, CHIARA;POLZONETTI, Giovanni
2013-01-01

Abstract

""Solvated platinum atoms, obtained by metal vapour synthesis (MVS), were conveniently used to prepare γ-iron oxide and γ-alumina supported Pt catalysts containing small metalnanoparticles of controlled size,ranging 0.5 – 3.0 nm in diameter (HRTEM). The γ-Fe2O3-supported Pt system showed higher catalytic activity and selectivity thanthose of a similarly prepared γ-Al2O3-supported system in the selective hydrogenation reactions of p- and o-chloronitrobenzeneto the corresponding haloanilines,in mild reaction conditions (25 °C, 0.1 MPa hydrogen pressure) (p-chloronitrobenzene: Specific Activity (SA) = 59.5 min-1,Selectivity = 99.9%; o-chloronitrobenzene: SA = 42.8 min-1, Sel.99.2%). The Pt\\\/γ-Fe2O3 systemalso showed high catalytic efficiency (Sel. > 98%, at 100% of conversion) inthe selective hydrogenationsof m-chloro-, p- and o-bromo- and p- and o-iodo- nitrobenzenes. XPS structural studies performed on a pristine Pt\\\/γ-Fe2O3sample as well as on a sample recovered after the reaction,indicate that the catalytic process did not induce permanent modification in the chemical and\\\/or electronic structure of the catalyst according with the high reusability of the system.""
Claudio, E., Laura Antonella, A., Maria, B., Gianmario, M., Battocchio, C., Polzonetti, G. (2013). Chemoselective hydrogenation of halonitroaromatics over γ-Fe2O3-supported platinum nanoparticles: The role of the support on their catalytic activity and selectivity. JOURNAL OF MOLECULAR CATALYSIS. A: CHEMICAL, 366, 288-293 [10.1016/j.molcata.2012.10.007].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/267617
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