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Synthesis and characterization of Faujasite-Na from fly ash by the fusion-hydrothermal method by Ricardo Adolfo Parra-Huertas; Carlos Ordulio Calderón-Carvajal; Jairo Alberto Gómez-Cuaspud; Enrique Vera-López is a Engineering article available to read on EtoBox.

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This research focused on the synthesis and characterization of Faujasite-Na zeolites from fly ash (FA). The FA was subjected to pretreatment processes, washings with hydrochloric acid solutions and heat treatments at 700°C for 3h, to remove unburned carbon that would affect the synthetic process. After a fusion with NaOH at 550°C for 3h, the resulting material was disposed in a hydrothermal reactor at 100°C for 12h to obtain the corresponding zeolite. The products were characterized by XRD analysis, where quartz, mullite, sillimanite and lime phases were identified for the fly ash; quartz, mullite and in higher proportion Faujasite-Na for the synthesized material. The average size of the crystals of the fly ash and zeolite Faujasite-Na was 35.0 and 38.7nm respectively, while the FTIR results allowed the identification of vibrational bands, characteristic of SiOSi and SiO bonds. The TGA-DTA analysis, allowed the identification of signals associated with exothermic and endothermic processes related to water removal and Faujasite-Na formation, while the EDX analysis coupled to SEM allowed verifying that the composition of the samples is consistent with the results sought and that the

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Author

Ricardo Adolfo Parra-Huertas; Carlos Ordulio Calderón-Carvajal; Jairo Alberto Gómez-Cuaspud; Enrique Vera-López

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)