| | 1 | Author
| F. Köksal, F. Ucun | Requires cookie* | | | Title
| EPR of 0 2 " Radicals in the Zeolites NH 4 NaY and NH 4 CaA  | | | | Abstract
| Activated and non-activated states of the zeolites NH 4 NaY and NH 4 CaA, and their NH 4 forms were prepared with an (NH 4) 2 S0 4 solution and were investigated by EPR after 7-irradiation. The formed radicals were attributed to O-T supposed to be trapped near a trigonally coordinated framework of 27 A1 (I = 5/2). Anisotropic O^" spectra were observed, consisting of hyperfine structure due to the 27 Al framework, even at room temperature. This was attributed to the scarceness of NH 4 sites or trap sites because of the preparation of the NH 4 forms of the zeolites with an (NH 4) 2 S0 4 solution. The crystal field splittings were found and interpreted. | | | |
Reference
| Z. Naturforsch. 53a, 951—954 (1998); received October 28 1998 | | | |
Published
| 1998 | | | |
Keywords
| EPR, Zeolites, 0~, NH 4 NaY, NH 4 CaA | | | |
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| default:Reihe_A/53/ZNA-1998-53a-0951.pdf | | | | Identifier
| ZNA-1998-53a-0951 | | | | Volume
| 53 | |
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