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ESR study of copper(II) ions in Y zeolite: Effect of water, ammonia and pyridine adsorption

✍ Scribed by C. Naccache; Y.Ben Taarit

Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
559 KB
Volume
11
Category
Article
ISSN
0009-2614

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✦ Synopsis

The ESR technique has been used to study the localization of copper@) ions in the zeoijte framework. In the enti@y hydrated samples the copper(H) ion is in the form of an hexazquo complex localized in the centre of the supercage. Dehydration produces the migration qf the ion toward the sodalite cage. Water, ammonia and pyridirre coordinate with the dehydrated copper ion, and a back migration toward the supercage occurs.

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ESR and IR studies on the adsorption and disproportionation of nitric oxide on copper exchanged Y zeolites, and of reduction by carbon monoxide
✍ C. Naccache; M. Che; Y. Ben Taarit πŸ“‚ Article πŸ“… 1972 πŸ› Elsevier Science 🌐 English βš– 710 KB

Nitric oxide adsorption on copper exchanged Y zeolites is investigate&by means of ESR and IR techniques. It is shown that NO disproportionation is copper cuncentration dependent as 1$1 as NO adsorption which occurs qn CO-.: reduced samples on Cuz+ \_ Ions for low exchanged Y zeolites and on Cu+ ions