http://www.cnr.it/ontology/cnr/individuo/prodotto/ID279056
Appraisal of microwave-assisted ion-exchange in mordenite by crystal structure analysis (Articolo in rivista)
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- Label
- Appraisal of microwave-assisted ion-exchange in mordenite by crystal structure analysis (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s10934-011-9482-9 (literal)
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- Zendehdel M., Cruciani G., Dondi M. (literal)
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- Faculty of Science, Department of Chemistry, Arak University, Arak, 38156-8-8349, Iran
Department of Earth Sciences, University of Ferrara, Via Saragat 1, 44100, Ferrara, Italy
Institute of Science and Technology for Ceramics (ISTEC-CNR), Via Granarolo 64, 48018, Faenza, Italy (literal)
- Titolo
- Appraisal of microwave-assisted ion-exchange in mordenite by crystal structure analysis (literal)
- Abstract
- Transition metal-containing mordenite have been prepared by solid state ion exchange with microwave irradiation of mechanical mixtures of CoCl2o6H2O, NiCl2o6H2O and CuCl2o2H2O with mordenite at 750 W microwave power and for 10-20 min treatment time. The prepared transition metal-mordenite were characterized by X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FT-IR), simultaneous TG and DTA thermal analyses (TG/DTA), surface area measurement (BET), and diffuse reflectance spectroscopy (DRS). The results show that Co2+, Ni2+, and Cu2+ metal ions are actually incorporated into mordenite pores. The extra-framework locations of metal cations were determined Rietveld refinement of XRD data, performed in the Cmcm space group for all three samples. Three metal sites were located: the first site is in an almost perfect boat-shaped coordination with framework oxygen's, the second site is poorly coordinated while the third metal cation site was found at the center of mordenite cage in six-fold coordination to water molecules. (literal)
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