Raj, A. ; Sivasanker, S. ; Lazar, K. (1994) Studies on the stability of Fe3+ ions in the ferrisilicate analog of zeolite beta Journal of Catalysis, 147 (1). pp. 207-213. ISSN 0021-9517
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1006/jcat.1994.1131
Abstract
The influence of pretreatments such as calcination in air, evacuation, and reduction in hydrogen at different temperatures on the stability of Fe3+ ions in the lattice of zeolite beta are reported. The concentration of Fe3+ ions in the lattice has been estimated by Mössbauer spectroscopy and ion-exchange studies. XRD and catalytic test reactions have been used to further characterize the samples. Mössbauer and ion-exchange studies indicate the formation of octahedral Fe3+ species (defect sites) with ion-exchange capacity on calcination in air. In situ Mössbauer spectroscopy has been used to identify the various Fe species formed during the different pretreatments.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 47654 |
| Deposited On: | 12 Jul 2011 06:37 |
| Last Modified: | 12 Jul 2011 06:37 |
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