Characterization of active sites on W$_{2-x}$Mo$_x$(PO$_{4}$)$_{2}$ ($0 \le x \le 1.25$) in butan-2-ol conversion

M. Kacimi; S. Gharbage; F. Bozon-Verduraz; M. Ziyad

doi:doi:10.1051/jp4:2005123037

Numéro		J. Phys. IV France Volume 123, March 2005


Page(s)		213 - 218
DOI		https://doi.org/10.1051/jp4:2005123037

J. Phys. IV France 123 (2005) 213-218
DOI: 10.1051/jp4:2005123037

Characterization of active sites on W_2-xMo_x(PO₄)₂ ( $0 \le x \le 1.25$ ) in butan-2-ol conversion

M. Kacimi¹, S. Gharbage¹, F. Bozon-Verduraz² and M. Ziyad²

¹ Laboratoire de Physico-Chimie des Matériaux et Catalyse, Faculté des Sciences, Département de Chimie, Rabat, Maroc
² Groupe de Chimie des Matériaux Divisés et Catalyse, ITODYS, UMR-CNRS 7086, Université Paris 7-Denis Diderot, 2 place Jussieu, 75251 Paris, France

Abstract
The molybdenum-tungsten phosphate (W $_{2-{\rm x}}$ Mo $_{\rm x}$ O₃(PO ₄)₂) was synthetised and characterised using several techniques. Its catalytic performances was studied in butan-2-ol conversion. The UV-visible investigations showed that the catalyst contains Mo(V) ions. This results was confirmed by the EPR spectra. Additional U.V. visible in-situ experimentss, in dynamic conditions revealed that butan-2-ol reduces Mo(VI) into Mo(V) ions. The active sites in the catalytic reaction appearto be built up arround the Mo(VI) ions.

Characterization of active sites on W2-xMox(PO4)2 ( ) in butan-2-ol conversion

Characterization of active sites on W_2-xMo_x(PO₄)₂ ( $0 \le x \le 1.25$ ) in butan-2-ol conversion