Artículos de revistas
[V,Al]-MCM-22: A novel acid/redox bifunctional molecular sieve
Registro en:
Journal Of Catalysis. Academic Press Inc Elsevier Science, v. 241, n. 2, n. 367, n. 377, 2006.
0021-9517
WOS:000239369000014
10.1016/j.jcat.2006.05.012
Autor
Albuquerque, A
Marchese, L
Lisi, L
Pastore, HO
Institución
Resumen
The synthesis and characterization of a novel vanadoaluminosilicate, [V,Al]-MCM-22, with MWW structure has been performed. As-synthesized, calcined, and H+ and Na+ ion-exchanged materials were characterized by various techniques, including X-ray diffraction (XRD), scanning electronic microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The presence of redox sites (V4+/V5+ couples) after oxidation in O-2 at 580 degrees C and reduction in H-2 at 500 degrees C was monitored by diffuse reflectance (DR) UV-vis spectroscopy and by F-FIR of CO adsorption at 100 K. Preliminary catalytic tests on the oxidative dehydrogenation (ODH) of propane provided promising results. (c) 2006 Published by Elsevier Inc. 241 2 367 377