51V magic angle spinning NMR in VOPO4 phases
- 24 September 2004
- journal article
- research article
- Published by Wiley in Magnetic Resonance in Chemistry
- Vol. 42 (12) , 1022-1026
Abstract
51V magic angle spinning NMR was applied to the αII, β and γ phases of VOPO4 at three magnetic field strengths (4.7, 7.1, and 11.7 T). The 51V quadrupole and chemical shift tensors were determined by iterative fitting of the NMR lineshapes at the three magnetic field strengths. The applicability of the method is illustrated by comparison with literature data. Although determined chemical shift tensors are completely axially symmetric and of the same magnitude, all studied phases can clearly be distinguished by their quadrupole coupling tensor. Relationships between the 51V NMR data and structural characteristics such as crystal symmetries are discussed. Copyright © 2004 John Wiley & Sons, Ltd.Keywords
This publication has 24 references indexed in Scilit:
- 59Co, 23Na NMR and electric field gradient calculations in the layered cobalt oxides NaCoO2 and HCoO2Solid State Nuclear Magnetic Resonance, 2003
- 51V MAS NMR Investigation of 51V Quadrupole Coupling and Chemical Shift Anisotropy in Divalent Metal PyrovanadatesThe Journal of Physical Chemistry B, 2000
- Li / β ‐ VOPO 4: A New 4 V System for Lithium BatteriesJournal of the Electrochemical Society, 1999
- Selective oxidation of n-butane to maleic anhydride on vanadyl pyrophosphateII. Characterization of the oxygen-treated catalyst by electrical conductivity, Raman, XPS, and NMR spectroscopic techniquesJournal of Catalysis, 1998
- Unit Cell Information for δ- and γ-VOPO4Journal of Catalysis, 1997
- New Insights into VOPO4 Phases Through Their HydrationJournal of Catalysis, 1994
- A Study by 31P NMR Spin-Echo Mapping of VPO CatalystsJournal of Catalysis, 1994
- Lithium (6Li and 7Li) NMR in high-temperature phases of lithium vanadium oxide bronzes (LixV2O5; 0.2 .ltoreq. x .ltoreq. 1)The Journal of Physical Chemistry, 1993
- Some selectivity criteria in mild oxidation catalysis V$z.sbnd;P$z.sbnd;O phases in butene oxidation to maleic anhydrideJournal of Catalysis, 1979
- Crystal Structure of α-VPO5Canadian Journal of Chemistry, 1973