In this paper we report about the one-step transformation of glycerol into acrylic acid, catalyzed by W-V-O mixed oxides with hexagonal tungsten oxide structure. The reaction requires two different catalyst functionalities, i.e., an acid one, which is inferred by WO3, aimed at the dehydration of glycerol into acrolein, and an oxidizing one, given by the V-sites incorporated inside the WO3 lattice, aimed at the oxidation of acrolein into acrylic acid. WO3 (W-O bronze) was very active and moderately selective in acrolein formation, but yielded only traces of acrylic acid. The incorporation of increasing amounts of V-atoms inside the hexagonal tungsten oxide structure favoured the consecutive oxidation of acrolein into acrylic acid. The selectivity to acrylic acid was affected by the W/V atomic ratio.

F. Cavani, S. Guidetti, C. Trevisanut, M.D. Soriano, P. Concepcion, J.M. Lopez-Nieto (2011). W-V-O bronzes, catalysts for the transformation of glycerol into acrylic acid. MALAGA : Faculdad de Ciencias de la Universidad de Malaga.

W-V-O bronzes, catalysts for the transformation of glycerol into acrylic acid

CAVANI, FABRIZIO;GUIDETTI, STEFANIA;TREVISANUT, CRISTIAN;
2011

Abstract

In this paper we report about the one-step transformation of glycerol into acrylic acid, catalyzed by W-V-O mixed oxides with hexagonal tungsten oxide structure. The reaction requires two different catalyst functionalities, i.e., an acid one, which is inferred by WO3, aimed at the dehydration of glycerol into acrolein, and an oxidizing one, given by the V-sites incorporated inside the WO3 lattice, aimed at the oxidation of acrolein into acrylic acid. WO3 (W-O bronze) was very active and moderately selective in acrolein formation, but yielded only traces of acrylic acid. The incorporation of increasing amounts of V-atoms inside the hexagonal tungsten oxide structure favoured the consecutive oxidation of acrolein into acrylic acid. The selectivity to acrylic acid was affected by the W/V atomic ratio.
2011
Proceedings Book CATBIOR
85
88
F. Cavani, S. Guidetti, C. Trevisanut, M.D. Soriano, P. Concepcion, J.M. Lopez-Nieto (2011). W-V-O bronzes, catalysts for the transformation of glycerol into acrylic acid. MALAGA : Faculdad de Ciencias de la Universidad de Malaga.
F. Cavani; S. Guidetti; C. Trevisanut; M.D. Soriano; P. Concepcion; J.M. Lopez-Nieto
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/115311
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact