Synthesis of high value-added zeolitic materials using glass powder residue as a silica source

AUTOR(ES)

Alves, J. A. B. L. R., Dantas, E. R. S., Pergher, S. B. C., Melo, D. M. A., Melo, M. A. F.

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

26/11/2013

RESUMO

In this work, zeolite A was obtained using alkaline fusion followed by a hydrothermal treatment of glass powder residue derived from the manufacturing of glass. The following parameters were evaluated: leaching of the stock material (silica source), mineralizing agent, alumina source, and the alkaline fusion and crystallization temperatures. The synthesized materials were characterized by chemical analysis using energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD and SEM results showed that zeolite A was obtained under almost all of the evaluated parameters. The use of pseudoboehmite as an aluminum source led to the formation of zeolite X as a secondary phase and a change in the temperature of fusion, which at 500 °C, there was formation of zeolite A, hydrated sodalite and zeolite X.

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