摘要
以聚环硫丙烷等３种聚硫醚低聚物作萃取剂，用浸渍法将其填充在交联大孔聚苯乙烯树脂中制得３种萃淋树脂．研究了它们对贵金属离子的吸附性能．其中以含聚环硫丙烷的为最好．它对银、钯、金有较高的吸附容量。
Three levextrel type extraction resins (EpⅠ,EpⅡ,EpⅢ) were synthesized by reaction of macroporous crosslinked polystyrene(E) with three kinds of oligomer polythioethers respectively. Polythioethers: CH 2 CH CH 2R S R=H(pⅠ),OC 2H 5(pⅡ),SAr(pⅢ) The adsorption capacities and selectivities of the resins for Au(Ⅲ),Pd(Ⅱ),Pt(Ⅳ),Ag(Ⅰ) and Hg(Ⅱ) were determined.It is found that EpⅠ is the best among these three resins.Its capcities for Au(Ⅲ),Pd(Ⅱ),Pt(Ⅳ),Ag(Ⅰ),Hg(Ⅱ) are 0.72,1.88,0.51,2.36 and 0.65 (mmol/g) respectively.These resins adsorb Cu(Ⅱ),Zn(Ⅱ),Pb(Ⅱ) hardly.The Ag(Ⅰ) adsorbed on EpⅠ can be desorbed easily and fast by rinsing with a NH 3 aqueous solution,and then resin is regenerated.The adsorption capacity of EpⅠ reused for three times for Ag(Ⅰ) was nearly the same as the original.
出处
《武汉大学学报（自然科学版）》
CSCD
1998年第2期137-140,共4页
Journal of Wuhan University(Natural Science Edition)
基金
国家自然科学基金
