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研究了 W 3 0 5 C树脂从草酸溶液中吸附钽草酸配合物的性能。结果表明 ,在 [(NH4) C2 O4]=0 .1 5 mol/L,[K2 S2 O7]=0 .0 2 8mol/ L,[Ta]=8.0× 1 0 -5mol/ L,p H=2 .0条件下 ,钽的吸附率有最大值 ,Freundlish常数k=3 .48× 1 0 3 ,吸附常数 K2 98=1 .72× 1 0 -4,吸附活化能 Ea=2 5 .70 k J/ mol,树脂对钽的饱和容量为每克干树脂 1 5 3 .5 2 mg。
The performance of W 3 0 5 C resin adsorbing tantalum oxalate complex from oxalic acid solution was studied. The results showed that when [(NH4) C2O4] = 0.1 mol / L, [K2 S2 O7] = 0.028 mol / L, [Ta] = 8.0 × 10-5 mol / L, p H = 2 .0 conditions, tantalum adsorption rate has the maximum Freundlish constant k = 3.48 × 103, adsorption constant K2 98 = 1.72 × 1 0 -4, the activation energy of adsorption Ea = 2570 k J / mol, the saturated capacity of the resin for tantalum is 15.35 mg per gram of dry resin.