Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
581215 | Journal of Hazardous Materials | 2009 | 6 Pages |
Abstract
The zeolite Li-ABW was synthesized by fusion method using fly ash as raw material. It comprised alkaline fusion followed by hydrothermal treatment in LiOH·H2O medium. Crystallinity of zeolite as high as 97.8% was attained under the following conditions: LiOH·H2O concentration, 3 M; hydrothermal temperature, 180 °C; the corresponding aging time, 12 h. The content of Li-ABW increased at the expense of lithium aluminum silicate or quartz with an increase of LiOH·H2O concentration. With increasing hydrothermal temperature and aging time, the soluble species re-crystallized and crystalline phase transformation between different zeolites was observed. Scanning electron microscopy (SEM) observation revealed that the obtained zeolite Li-ABW was a rod-like crystal. The pore size distribution curve indicated the presence of mesopores.
Keywords
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Authors
Z.T. Yao, M.S. Xia, Y. Ye, L. Zhang,