SYNTHESIS OF 1-(2-AMINOETHYL) PIPERAZINE RESIN AND ITS ADSORBABILITY FOR NOBLE METALLIC IONS

摘要

The influences of the molar ratio of reagents, reaction tempeature and time on the synthesis of the functional resin 1-(2-aminoethyl) piperazine resin (AEPZR) were studied. The functional group content was 2.76 mmol/g-resin. The structure of the resin was confirmed using the FT-IR method and elementary analysis. The sorption capacities of the resin for noble metallic ions were measured and the values for Au(Ⅲ), Pt(Ⅳ), Pd (Ⅱ), Ru(Ⅲ), Os(Ⅳ) and Ir(Ⅳ ) were 1060, 480, 390, 350, 390 and 430 mg/g-resin, respectively. The sorption rates, molar sorption ratios, apparent activation energies, adsorption and elution under resin column of the noble metallic ions were determined. The resin shows a remarkable sorption affinity for noble metallic ions.