Application of 129Xe nuclear magnetic resonance to the study of Cu-Y zeolites: dehydration and redox effects.
Copper-exchanged sodium Y zeolites have been studied by using 129Xe nuclear magnetic resonance (NMR) spectroscopy. The oxidation state as well as the location of copper in the zeolite have been determined for different samples at various levels of exchange (lambda = 15, 35, 58%) and hydration, and at different stages of redox treatment. Information about the nature of Xe-Cu+ or Xe-Cu2+ interactions has been obtained by a combination of electron spin resonance (ESR) and 129Xe NMR measurements on Cu-Y and Cu-Rho zeolites.
Gédéon
A
A
Laboratoire de Chimie des Surfaces, Université Pierre et Marie Curie, Paris, France.
Bonardet
J L
JL
Lepetit
C
C
Fraissard
J
J
D003300:Copper / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D010084:Oxidation-Reduction; D014867:Water / Q000378:metabolism; D014978:Xenon / Q000737:chemistry*; D014979:Xenon Isotopes; D017641:Zeolites / Q000737:chemistry*
D014979:Xenon Isotopes; D014867:Water; D017641:Zeolites; D014978:Xenon; D003300:Copper