Adsorption of platinum(IV) onto D301R resin

作者：Mo Jianjun^*; Shi Linmei; Gu Yongbing; Yan Guobing

来源：Rare Metals, 2008, 27(3): 233-237.

DOI：10.1016/S1001-0521(08)60121-7

• D301R resin
• adsorption
• platinum
• adsorption mechanism

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 k(298) = 5.43 x 10(-5) s(-1). The adsorption of Pt(IV) on D301R resin obeys the Freundlich isotherm. The adsorption parameters of thermodynamics are as follows: enthalpy change Delta H = 4.37 kJ/mol, Gibbs free energy change Delta G = -5.39 kJ/mol, and entropy change Delta S = 32.76 J/(mol.K). The apparent activation energy is E-a = 22.5 kJ/mol. The coordination molar ratio of the functional group of D301R resin to Pt(IV) is 2:1.

• 出版日期2008-6
• 单位丽水学院