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A new method for preparation of silica potassium cobalt hexacyanoferrate composite ion exchanger from silica sol

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Abstract

A new method for the preparation of porous silicapotassium cobalt hexacyanoferrate (SiO2 .KCoFC) composite from silica sol is described. Silica sol was first gelled with K4Fe(CN)6 solution. Then the resulting hydrogel, SiO2 .K4Fe(CN)6 was reacted with Co(NO3)2 solution in acetone to give the composite SiO2 .KCoFC hydrogel. The empirical formula of KCoFC in the composite was found to be K1.69Co 0.93Fe(CN)6. The removal efficiency of the composite for Cs was judged by measuring its distribution coefficient, K d in 1M HCl solution containing 10 ppm Cs. The K d of Cs was found to be 5.73.105 ml/g-composite.

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Authors and Affiliations

  1. Applied Chemistry Division, PINSTECH, P.O. Nilore, Islamabad, Pakistan

    Ali Mardan & Rumana Ajaz

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  1. Ali Mardan
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  2. Rumana Ajaz
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Mardan, A., Ajaz, R. A new method for preparation of silica potassium cobalt hexacyanoferrate composite ion exchanger from silica sol. Journal of Radioanalytical and Nuclear Chemistry 251, 359–361 (2002). https://doi.org/10.1023/A:1014857519804

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