RARE METALS: Adsorption of platinum(IV) onto D301R resin

RARE METALS: Adsorption of platinum(IV) onto D301R resin

Pt(IV) was quantitatively adsorbed by D301R resin in the medium of pH = 3.47. The statically saturated adsorption capacity is 410 mg/g. Pt(IV) adsorbed on D301R resin can be eluted by 1.0-2.0 mol/L NaOH. The rate constant is k298 = 5.43 X 10-5S-1. The adsorption of Pt(IV) on D301R resin obeys the Fr...

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Veröffentlicht in:Rare metals 2008-06, Vol.27 (3), p.233-237
Hauptverfasser: Mo, Jianjun, Shi, Linmei, Gu, Yongbing, Yan, Guobing
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creator Mo, Jianjun
Shi, Linmei
Gu, Yongbing
Yan, Guobing
description Pt(IV) was quantitatively adsorbed by D301R resin in the medium of pH = 3.47. The statically saturated adsorption capacity is 410 mg/g. Pt(IV) adsorbed on D301R resin can be eluted by 1.0-2.0 mol/L NaOH. The rate constant is k298 = 5.43 X 10-5S-1. The adsorption of Pt(IV) on D301R resin obeys the Freundlich isotherm. The adsorption parameters of thermodynamics are as follows: enthalpy change DeltaH = 4.37 kJ/mol, Gibbs free energy change DeltaG = -5.39 kJ/mol, and entropy change DeltaS = 32.76 J/(mol*K). The apparent activation energy is Ea = 22.5 kJ/mol. The coordination molar ratio of the functional group of D301R resin to Pt(IV) is 2:1.
doi_str_mv 10.1016/S1001-0521(08)60121-7
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