Surface properties of a low-content V catalyst, prepd. by grafting a high-surface-area TiO2 support, were studied by diffusion reflectance, ESR, and Fourier-transform IR spectroscopy and temp.-programmed desorption and its catalytic activity by butadiene oxidn. The grafting reaction of V occurs on all surface OH groups of TiO2, leaving exposed Ti4+. V sites are isolated on the surface and have labile oxidative and coordinative states. Moreover, they interact cooperatively with Ti sites. Evidence for other V species (surface, interstitial, or reticular) was not found. [on SciFinder(R)]

Surface characterization of a grafted vanadium-titanium dioxide catalyst

CENTI, Gabriele;
1985

Abstract

Surface properties of a low-content V catalyst, prepd. by grafting a high-surface-area TiO2 support, were studied by diffusion reflectance, ESR, and Fourier-transform IR spectroscopy and temp.-programmed desorption and its catalytic activity by butadiene oxidn. The grafting reaction of V occurs on all surface OH groups of TiO2, leaving exposed Ti4+. V sites are isolated on the surface and have labile oxidative and coordinative states. Moreover, they interact cooperatively with Ti sites. Evidence for other V species (surface, interstitial, or reticular) was not found. [on SciFinder(R)]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/1907387
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