摘要
利用静态法研究了5种不同膦(磷)类萃取剂的浸渍树脂在盐酸介质中对重稀土的吸附行为．结果表明, Cyanex272与膦(磷)类萃取剂组成的双萃取剂的浸渍树脂在同等实验条件下比单一Cyanex272萃取剂的浸渍树脂对重稀土具有更好的吸附性,其中以Cyanex272与P507,Cyanex302,Cyanex923和TBP分别按体积比1∶1,5∶1,1∶1,2∶1混合为最优．吸附最佳pH值在3．0～4．0之间,吸附平衡时间为50 min,升高温度对吸附有利．在相同实验条件下,5种浸渍干树脂Cyanex272,Cyanex272-P507,Cyanex272-Cyanex302,Cyanex272-Cyanex923,Cyanex272-TBP对重稀土的饱和吸附容量分别为20．04,25．37,21．87,22．16,38．48 mg/g．
The characteristics of five different phosphinic （phosphoric） impregnated resins adsorbing heavy rare earth elements in hydrochloric acid are studied by static method, The results indicate that the impregnated resin containing double extractants is better than the single one （Cyanex272） under the same conditions. The optimal proportions between Cyanex2.72 and P507, Cyanex302, Cyanex923, TBP are 1：1, 5：1, 1：1, 2：1. The better pH value is 3-4 and the time of adsorptive equilibrium 50 min. Temperature rising enhances the adsorption respectively, Under the same experimental conditions, the saturated adsorptive capabilities of five different phosphinic （phosphoric） impregnated resins （Cyanex272, Cyanex272-P507, Cyanex272-Cyanex302, Cyanex2.72-Cyanex923, Cyanex272-TBP） in heavy rare earth are 20,04, 25.37, 21,87, 22.16, 38.48 mg/g, respectively.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2007年第2期268-272,共5页
The Chinese Journal of Process Engineering
基金
江西省自然科学基金(编号:0450065)
关键词
膦(磷)类萃取剂
浸渍树脂
重稀土元素
吸附
性能
phosphinic （phosphoric） extractant
impregnated resin
heavy rare earth elements
adsorption
characteristic
