Abstract
The surface properties of a fumed vanadium oxide sample have been studied by FT-IR spectroscopy. It has been found that evacuation at temperatures up to 673 K causes a partial reduction of the sample, with a decrease in transmission of the IR light corresponding to the formation of ESR-detectable paramagnetic centers. The surface of activated samples does not show well-defined v(OH) bands. However, the adsorption of pyridine, pivalonitrile, acetonitrile and CO evidences the presence of both Lewis and Bronsted acid centers. The adsorption of CO 2. does not result in the formation of detectable carbonate species. It is concluded that vanadia displays predominantly the character of an acidic anhydride, with a high covalency of the V-O-V bonds. A comparison is made with the properties of oxide-supported vanadia catalysts.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
