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Effects of Possible Spin-Spin Interactions on EPR spectra of Cu2+ exchanged Faujasite–X (I)

Published online by Cambridge University Press:  01 February 2011

Chrispin B. O. Kowenje ,
Barry R. Jones  and
Charles W. Kanyi
Chrispin B. O. Kowenje
Affiliation:
[email protected], Binghamton University, State University of New York, Chemistry, Chemistry Dept, Sci. II Bld, Vestal Parkway East., Binghamton, NY, 13902-6000, United States, 1-607-777-2769, 1-607-777-4478
Barry R. Jones
Affiliation:
[email protected], Binghamton University, State University of New York, Chemistry, United States
Charles W. Kanyi
Affiliation:
[email protected], Binghamton University, State University of New York, Chemistry, United States
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Abstract

The interpretation of the continuous wave electron paramagnetic resonance (CW-EPR) spectra of Cu2+ exchanged in Faujasite zeolite is not straightforward. Recent literature points to the role of both Cu2+ zeolite sites and Cu2+ relationship to lattice Al in determining the parameters of Cu2+ spin Hamiltonian. Our work shows that at low concentration, Cu2+ EPR signals show negligible spin-spin interactions. At higher Cu (II) concentrations, a third CW-EPR spectrum that has contributions from both the CW-EPR and the spin-spin interactions, appears.

Keywords

electron spin resonanceion-exchange materialcatalytic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 900: Symposium O – Nanoparticles and Nanostructures in Sensors and Catalysis , 2005 , 0900-O12-25
Copyright
Copyright © Materials Research Society 2006

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