Abstract
Detergent-grade zeolite 4A has been synthesized from the clays found in various parts of India. The process parameters for the synthesis of detergent-grade zeolite, like the activation temperature for the chemical transformation of clay, the composition of the reacting mixture and finally the crystallization temperature, have been studied. Better metakaolinite formation has been observed at a calcination temperature of around 550°C. The characterization of the synthesized zeolite by X-ray diffraction study confirms its formation. Moreover, the calcium binding capacity 170 mg of CaO/gm as well as particle size in the range of 3-7 microns of this zeolite are found to be satisfactory characteristics to substitute phosphate in detergents.
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