1982
DOI: 10.1002/zaac.19824860127
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Mößbauer‐ und EPR‐spektroskopische Untersuchungen hydrothermal behandelter A‐Zeolithe

Abstract: Mit Hilfe der EPR‐ und der Mößbauerspektroskopie wurden systematische Untersuchungen des Einflusses einer Hydrothermalbehandlung auf die Primärporenstruktur von A‐Zeolithen vorgenommen. Die Modifizierung der Primärporenstruktur dieser Zeolithe erfolgte durch gezielten Einbau von Mg2+‐ und Li+‐Kationen sowie paramagnetischer Fe3+‐Ionen. Durch EPR‐Messungen konnten Koordinationen und Positionen der im großen Hohlraum befindlichen Eisenionen angegeben werden, während mit Hilfe der Mößbauerspektroskopie sowohl mag… Show more

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Cited by 5 publications
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“…Specifically, for the 3+ ions they argued that ions, on partial dehydration, tend to localize in sites near the walls of the supercage phase25 with ferromagnetic properties. 20 The occurrence of fine-structure ESR signals together with the variety of coordination symmetries the Fe(III) ions experience in zeolitic structure and with the occasional possibility that the Fe(III) ions are involved in amorphous phases generated from structure breakdown of zeolite would produce a convolution of signals, especially when the line width of individual signals is relatively large. This convolution becomes broader in spectra of powders.…”
Section: Introductionmentioning
confidence: 99%
“…Specifically, for the 3+ ions they argued that ions, on partial dehydration, tend to localize in sites near the walls of the supercage phase25 with ferromagnetic properties. 20 The occurrence of fine-structure ESR signals together with the variety of coordination symmetries the Fe(III) ions experience in zeolitic structure and with the occasional possibility that the Fe(III) ions are involved in amorphous phases generated from structure breakdown of zeolite would produce a convolution of signals, especially when the line width of individual signals is relatively large. This convolution becomes broader in spectra of powders.…”
Section: Introductionmentioning
confidence: 99%