大孔膦酸树脂吸附镨的研究  

STUDY ON THE ADSORPTION OF Pr(Ⅲ) BY MACROPOROUS PHOSPHONIC ACID RESIN

作　　者：舒增年[1] 熊春华[1] 

机构地区：[1]丽水师范专科学校化学系,浙江323000

出　　处：《铀矿冶》1998年第4期267-271,共5页Uranium Mining and Metallurgy

摘　　要：大孔膦酸树脂（ＰＡＲ）对 Ｐｒ（Ⅲ）的吸附在 ｐＨ＝６． ０时最佳。静态饱和容量为每克树脂（干） ２５４．８ ｍｇ，用０． ２０ ｍｏｌ／Ｌ ＨＣＩ＋０．５０ ｍｏｌ／Ｌ ＮａＣｌ，溶液能定量洗脱，再生树脂可以重复使用。测定 了树脂吸附Ｐｒ（Ⅲ）的Ｆｒｅｕｎｄｌｉｓｈ常数和反应的热力学函数等。对吸附反应机理进行了探讨。Pr (Ⅲ ) is optimally absorbed by macroporous phosphonic acid resin in a medium of pH= 6. 0. The static loading capacity is 254. 8 mg Pr(Ⅲ )/g. resin. Pr(Ⅲ)adsorbed on macroporous phosphonic acid resin can be eluated by 0. 50 mol/L NaCl+0. 20 mol/L HCl and the regenerated resin can be reused. The Freundlish constant and thermadynamic function of adsorption reaction were determined. The adsorption mechanism has been discussed.

关 键 词：膦酸树脂 镨 吸附 反应机理 

分 类 号：O614.334[理学—无机化学]