Volume 64, 1968

Mössbauer studies of 57Fe in zeolites

Abstract

Mössbauer spectra of 57 Fe in various zeolites have been obtained. When the iron is exchanged with the cations present in the zeolites as Fe3+, simple two line spectra are found. When attempts were made to introduce Fe2+ into the lattices, complete breakdown of the structure occurred in all zeolites studied except clinoptilolite. However, the spectrum of Fe2+-clinoptilolite showed little evidence of Fe2+ in the structure but considered mainly of the two ferric lines. Valency changes occur readily on dehydrating the various ferric zeolites; either a simple ferrous spectrum was derived or more complicated spectra containing ionic ferric and ferrous states and lines due to covalent ferrous. The original ferric spectra were not reproduced on resorption of water. Filling the channels with water produced more simple ferrous spectra. However, on opening these samples to air, rapid oxidation occurred and the original simple ferric spectra were obtained. Calculations were made to ascertain the site of the ferric ion in Y-zeolite. Although these calculations involved many assumptions best agreement was found for the SII site in this zeolite.

Article information

Article type
Paper

Trans. Faraday Soc., 1968,64, 1388-1395

Mössbauer studies of 57Fe in zeolites

J. A. Morice and L. V. C. Rees, Trans. Faraday Soc., 1968, 64, 1388 DOI: 10.1039/TF9686401388

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements