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In this paper the sorption behavior of Yb(Ⅲ) onto the macroporous phosphonic acid resin (MPAR) is reported.Experimental results show that the statically saturated sorption capacity is 328 mg/g·resin;Yb(Ⅲ) adsorbed on MPAR can be eluted by 1mol·L -1 HCl,elution percentage is 91.5%.The apparent rate constant is k 298 = 4.63×10 -5 s -1 .The sorption behavior of MPAR for Yb(Ⅲ) abides the Freundlich isotherm.The themodynamic parameter of sorption:enthalpy change ΔH for Yb(Ⅲ) is 50.4kJ·mol -1 .The coordination molar ratio of the functional group of MPAR to Yb(Ⅲ) is 3∶1.The bondforming conditions of MPAR for Yb(Ⅲ) is examined by IR spectrometry.
In this paper the sorption behavior of Yb (III) onto the macroporous phosphonic acid resin (MPAR) is reported. Experimental results show that the statically saturated sorption capacity is 328 mg / g · resin; Yb (III) adsorbed on MPAR can be eluted by 1 mol·L -1 HCl, the elution percentage is 91.5%. The apparent rate constant is 298 = 4.63 × 10 -5 s -1. The sorption behavior of MPAR for Yb (Ⅲ) abides the Freundlich isotherm.Themodynamic parameter of sorption: enthalpy change ΔH for Yb (III) is 50.4 kJ · mol -1. The coordination molar ratio of the functional group MPAR to Yb (III) is 3: 1. The bondforming conditions of MPAR for Yb (III) by IR spectrometry.