Journal
CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
Volume 11, Issue 5, Pages 782-789Publisher
SCIENDO
DOI: 10.2478/s11532-013-0204-9
Keywords
Aluminosilicate polymer; Zeolite; Hydrothermal treatment; Polycondensation; Geopolymerization
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Funding
- Tomas Bata University in Zlin [IGA/14/FT/11/D]
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The effect of hydrothermal treatment on the structure of an aluminosilicate polymer prepared by a polycondensation reaction between silicate and hydroxoaluminate in alkaline aqueous solution was studied. The structural changes were investigated using X-ray diffraction analysis, Fourier-transform infrared spectroscopy, scanning electron microscopy imaging and thermogravimetric analysis. The results indicated that the amorphous aluminosilicate polymer transformed into a crystalline product during the hydrothermal treatment at 145A degrees C. The crystalline phase was identified as a mineral of the zeolite group, most likely phillipsite. This transformation required an alkaline environment during the hydrothermal treatment.
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