CDAH_2树脂的制取及其对钾离子的富集性能

Synthesis of CDAH_2 resin and its enrichment behavior for potassium ion

以邻苯二酚和氯乙酸为主要原料合成了CDAH2树脂,并研究了自制的的树脂交换分离柱对钾离子的富集效果。实验结果表明:该合成方法较大程度地优化了合成工艺,利用CDAH2树脂自制成的交换分离柱,在交换试液pH值为4.0、温度为20℃以下,交换流速为2mL/min时,树脂对钾离子的吸附性能良好,循环使用率高,树脂再生活化处理容易。

CDAH2 resin was synthesized from catechol and chloroacetic acid as the main starting materials, its enrichment behavior for potassium ion was evaluated with a self-made exchange resin column. The improved synthesis process provides the resin with good adsorption ability for potassium ion in the exchange test solution with pH=4.0 at a temperature below 20 ℃ and an exchange flow rate of 2mL/min. The CDAH2 resin has a high recycling rate, and can be easily regenerated.