Abstract
Titanium and silicon have been partly substituted by vanadium in the microporous titanosilicate AM-2 to produce V-AM-2 via direct hydrothermal method. The presence of vanadium was confirmed by energy dispersive X-ray spectrometry (EDS) analysis. Its structural incorporation leads to slight extension of the unit cell volume. This fact suggests an isomorphous substitution of tetrahedral silicon by vanadium, which is bigger than the former one. Over 500 °C the TG curve of V-AM-2 indicates increasing mass due to the oxidation of V 4+–V 5+. The presence of vanadium and its oxidation state are also investigated by diffuse reflectance ultraviolet–visible (DR UV–Vis) spectroscopy, 51V and 29Si magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy.
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.
