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Zeolitic materials as Na-phillipsite, Na-K-phillipsite-like zeolites and the mixtures of zeolites (phillipsite+analcime and phillipsite+chabazite+analcime) were synthesized from volcanic ash, either in presence and absence of cetiltrimetilamonium bromide (CTAB). The ash sample used in the laboratory experiments contains 75.36 % SiO 2 and 14.11 % Al 2 O 3 , abundances. The reaction time as well as the influence of CTAB were studied in the zeolitic materials crystallization. The experiments were carried out under hydrothermal conditions, autogenic pressure and temperature of 150 ºC, as well as reaction time from 8 to 116 h. Products from this hydrotermal treatment were identi - fied by X-ray diffraction (XRD) and characterized by scanning electron microscopy- energy dispersive X-ray spectroscopy (SEM-EDS). Of the zeolitic materials obtained the Na-K-phillipsite-like zeolite was found to be the most effective for the retention of cations Pb 2+ , Zn 2+ , and Ba 2+

Palabras clave: Zeolites, phillipsite, chabazite, analcime, ash, synthesis.
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Universidad Autónoma del Estado de México
Sistema de Información Científica Redalyc ®
Versión 3.0 | 2017
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