Iron exchanged natural mordenite: UV-Vis diffuse reflectance and Mössbauer spectroscopy characterisation Online publication date: Thu, 04-Feb-2016
by Daria Tito-Ferro; Inocente Rodríguez-Iznaga; Beatríz Concepción-Rosabal; Gloria Berlier; Fernando Chávez-Rivas; Arbelio Penton-Madrigal; Felipe F. Castillón-Barraza; Vitalii Petranovskii
International Journal of Nanotechnology (IJNT), Vol. 13, No. 1/2/3, 2016
Abstract: Purified natural mordenite (ZP) from Palmarito de Cauto deposit, Cuba, was modified with Fe2+ and Fe3+cations through ion-exchange in acid medium and characterised by UV-Vis diffuse reflectance, FTIR and Mössbauer spectroscopies. Fe2+ exchange is less favoured than Fe3+ exchange, which may be due to higher Fe3+ valence. In the Fe2+ exchanged samples, Fe2+ZP, all incorporated Fe2+ is found in octahedral coordination and it should be mainly in cationic extra-framework positions inside mordenite channels as a charge compensating cation. In the case of the Fe3+ exchanged samples, Fe3+ZP, the incorporated Fe3+ is present in both octahedral and tetrahedral coordination and it can be in both cationic extra-frameworks positions as a charge compensating cation and in form of oxy-hydroxides originated by Fe3+ hydrolysis.
Online publication date: Thu, 04-Feb-2016
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Nanotechnology (IJNT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email firstname.lastname@example.org