Synthesis of cubic Y zeolite using a pulsed microwave heating system

• Autor(a) principal: Araújo,L.R.G. de
• Data de Publicação: 1999
• Outros Autores: Cavalcante Jr.,C.L., Farias,K.M., Guedes,I., Sasaki,J.M., Freire,P.T.C., Melo,F.E.A., Mendes-Filho,J.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Materials research (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14391999000200011
• topic: synthetic zeolites; microwave heating; X-ray and infrared spectroscopy

Cubic Y zeolite were successfully synthesized using microwave heating for 18 - 25 min, whereas 10 - 50 h are required by hydrothermal heating technique depending upon the lattice Si/Al ratio. To this end, we used a commercial microwave oven modified in order to provide pulsed microwave pumping on the synthesis mixtures. The obtained samples were analyzed by X-ray diffraction, BET surface area and infrared spectroscopy measurements. As a result, we verify that Y zeolite samples obtained from hydrogels containing low aluminum contents, present a good degree of crystallinity and then can be suitable for using in adsorption and catalysis experiments.