tThe catalytic activity of niobium oxide-based materials, containing the same amount of Nb2O5(∼15 wt%)and prepared by different methods, with that of pure Nb2O5in the epoxidation of methyl oleate withhydrogen peroxide was compared.The catalytic performances of the catalyst prepared by impregnation do not differ substantially fromthe ones of Nb2O5. The performances of Nb-supported catalysts prepared by sol–gel can be modulatedby controlling the process parameters. The high dispersion of the active NbOxspecies obtained by thispreparation method gives very higher selectivity than in the case of pure Nb2O5. Morphologic and struc-tural characterization of the catalysts helped justifying the obtained catalytic results in terms of activityand selectivity.
Influence of preparation methods and structure of niobium oxide-based catalysts in the epoxidation reaction / Turco, Rosa; Aronne, Antonio; Paolo, Carniti; Antonella, Gervasini; Minieri, Luciana; Pasquale, Pernice; Tesser, Riccardo; Vitiello, Rosa; DI SERIO, Martino. - In: CATALYSIS TODAY. - ISSN 0920-5861. - 254:(2015), pp. 99-103. [10.1016/j.cattod.2014.11.033]
Influence of preparation methods and structure of niobium oxide-based catalysts in the epoxidation reaction
TURCO, ROSA;ARONNE, ANTONIO;MINIERI, LUCIANA;TESSER, RICCARDO;VITIELLO, ROSA;DI SERIO, MARTINO
2015
Abstract
tThe catalytic activity of niobium oxide-based materials, containing the same amount of Nb2O5(∼15 wt%)and prepared by different methods, with that of pure Nb2O5in the epoxidation of methyl oleate withhydrogen peroxide was compared.The catalytic performances of the catalyst prepared by impregnation do not differ substantially fromthe ones of Nb2O5. The performances of Nb-supported catalysts prepared by sol–gel can be modulatedby controlling the process parameters. The high dispersion of the active NbOxspecies obtained by thispreparation method gives very higher selectivity than in the case of pure Nb2O5. Morphologic and struc-tural characterization of the catalysts helped justifying the obtained catalytic results in terms of activityand selectivity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.