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β, δ, and α phases of layered sodium silicates were synthesized using waste rice husk ash (RHA) as the raw material by a simple sintering process. X-ray diffraction (XRD) measurements revealed a phase transformation from β through δ to α as the reaction temperature and time of synthesis was increased. Raman studies confirmed the synthesized products have a layered SiO4 tetrahedral structure. Further,...
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