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

Materials Research

J. A. B. L. R. Alves²  E. R. S. Dantas¹  S. B. C. Pergher²  D. M. A. Melo²  M. A. F. Melo¹ 

[1] ,Federal University of Rio Grande do Norte Institute of Chemistry Natal RN ,Brazil

关键词: glass powder;    zeolite A;    zeolite X;   

DOI  :  10.1590/S1516-14392013005000191

来源: SciELO

【 摘 要 】

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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