Ana P. Araujo, Meiry G.F. Rodrigues
En este trabajo se llevo a cabo la preparacion de una membrana zeolitica (Y/�¿-alumina) utilizando el metodo de crecimiento secundario con semilla. La zeolita Y fue sintetizada utilizando el metodo hidrotermico. El soporte ceramico (�¿-alumina) fue preparado a traves de la tecnica de conformacion de post ceramico y sinterizada a 1200oC/1h. Los materiales se caracterizaron por espectroscopia de fluorescencia de rayos X por energia dispersiva (EDX), difraccion de rayos X (DRX) y microscopia electronica de barrido (MEB). La formacion de una pelicula zeolitica homogenea sobre la superficie de soporte ceramico se observo a partir de los difractogramas de rayos x y de las imagenes obtenidas por MEB. El proceso de tratamiento termico presento evidencias de que hubo modificaciones en las estructuras de la membrana zeolitica.
This work it was carried out the preparation of a zeolite membrane (Y/á-alumina) using the method of seeded secondary growth. The zeolite Y was synthesized via a hydrothermal method. The ceramic support (á-alumina) was obtained using the technique of powder conformation being sintered at 1200°C/1h and characterized by XRD and materials were characterized by fluorescence spectroscopy X-ray energy dispersive (EDX), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The zeolite membrane was submitted to thermal treatment and characterized by XRD. The formation of a homogeneous zeolite film on the surface of the ceramic could be observed from the x-ray diffraction patterns and also from the images obtained by SEM. The heat treatment process provided evidence that there were changes in the structure of zeolite membrane.
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