Characterization of vanadium oxide catalysts supported on TiO{sub 2}-ZrO{sub 2} by solid-state {sup 51}V and {sup 1}H NMR spectroscopy

Journal Article · Thu Aug 20 04:00:00 EDT 1992 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100196a043· OSTI ID:281165

Reddy, B M; Reddy, E P; Srinivas, S T ^[1]

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1. Indian Inst. of Chemical Technology, Hyderabad (India); and others

A series of TiO{sub 2}-ZrO{sub 2} mixed oxide supported vanadia catalysts with various V{sub 2}O{sub 5} loadings ranging from 1 to 16 wt % were prepared by a wet impregnation method and were characterized by means of solid-state {sup 51}V and {sup 1}H NMR spectroscopic techniques. The solid-state {sup 51}V NMR spectra of V{sub 2}O{sub 5}/TiO{sub 2}-ZrO{sub 2} catalysts reveal the existence of two types of dispersed surface vanadium oxide complexes in a tetrahedral oxygen environment at lower vanadium loadings adn a third three-dimensional crystalline V{sub 2}O{sub 5} in distorted octahedral environment at higher vanadium contents. The proton NMR results provide evidence for the existence of metal oxide support interaction through the support hydroxyl groups. 33 regs., 4 figs.

• Sponsoring Organization: USDOE
• OSTI ID: 281165
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 17 Vol. 96; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
CATALYST SUPPORTS
NUCLEAR MAGNETIC RESONANCE
PHOTOELECTRON SPECTROSCOPY
TITANIUM OXIDES
VANADIUM OXIDES
X-RAY SPECTROSCOPY
ZIRCONIUM OXIDES