Effect of NaOH/Coal Fly Ash Ratio to Crystallinity of Faujasite Synthesis

., Sutarno and Arryanto, Yateman and Budhyantoro, Arief (2009) Effect of NaOH/Coal Fly Ash Ratio to Crystallinity of Faujasite Synthesis. Jurnal Ilmu Dasar, 10 (1). pp. 1-5. ISSN 1411-5735

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Research on effect of NaOH/Coal Fly Ash ratio in faujasite synthesis to faujasite crystallinity has been conducted. Faujasite synthesis has been conducted by destructed coal fly ash using sodium hidroxide (NaOH) with NaOH/Coal Fly Ash ratio = 1.0;1.2; 1.5; 2.0; 2.5 and 3.0 (w/w) on the solid phase. The solid mixtures cured at 550 oC for 1 h and followed by coolling process. Addition of distilled water to the solid mixtures and agitation for 24 h were done until we have slurry. The slurry kept on bomb autoclave and hydrothermal reaction has done at 100 oC for 72 h. The solid products are dried on oven and characterized using XRD. Al and Si were analyzed using UV-Vis spectroscopy method. The Faujasite has been produced by this research using of NaOH/Coal Fly Ash ratio ranging from 1 to 1.5 ratios (w/w). The range of NaOH/Coal Fly Ash ratio from 2 to 3 ratio (w/w) gave hidroxysodalite as hydrothermal product. The best ratio was by 1,2 NaOH/Coal Fly Ash ratio (w/w), it showed the highest crystallinity of faujasite and Si/Al ratio of Faujasite was higher than others. This research concluded that the high concentration of OH- on the hydrothermal system can transform faujasite to hydroxysodalite.

Item Type: Article
Uncontrolled Keywords: coal fly ash, NaOH destruction, faujasite, sodalite
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Aries Budhyantoro 61142
Date Deposited: 06 May 2015 03:28
Last Modified: 06 May 2015 03:28
URI: http://repository.ubaya.ac.id/id/eprint/24046

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