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Vanadium Molecular Sieve, Vapo-5: Preparation and Electrochemical Characterization

Published online by Cambridge University Press:  10 February 2011

F. Bedioui ,
E. Briot ,
J. Devynck  and
K. J. Balkus Jr
F. Bedioui
Affiliation:
Laboratoire d'Electrochimie et de Chimie Analytique (URA n°216 du CNRS), Ecole Nationale Supérieure de Chimie de Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France 33 1 44 27 67 51; bedioui@ext.jussieu.fr.
E. Briot
Affiliation:
Laboratoire d'Electrochimie et de Chimie Analytique (URA n°216 du CNRS), Ecole Nationale Supérieure de Chimie de Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France 33 1 44 27 67 51; bedioui@ext.jussieu.fr.
J. Devynck
Affiliation:
Laboratoire d'Electrochimie et de Chimie Analytique (URA n°216 du CNRS), Ecole Nationale Supérieure de Chimie de Paris, 11 rue Pierre et Marie Curie, 75231 Paris cedex 05, France 33 1 44 27 67 51; bedioui@ext.jussieu.fr.
K. J. Balkus Jr
Affiliation:
Department of Chemistry, University of Texas at Dallas, Richardson TX 75083–0688, USA balkus@utdallas.edu
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Abstract

The vanadium containing molecular sieve VAPO-5 was characterized by using cyclic voltammetry. The as-synthesized and calcined samples contain loosely bound VO2+ species that can be removed by immersion in the aqueous electrolyte solution. The steady-state cyclic voltammograms of VAPO-5 reveal two distinct reversible V(5+)/V(4+) processes centered at Eeq(I) = 0.11 V/SCE and Eeq(II) = −0.07 V/SCE. These processes have been proposed to arise from framework vanadium located at structurally distinct sites V-O-T (T = Al or P).

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 45
Copyright
Copyright © Materials Research Society 1996

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