螯合树脂研究 ⅨⅩⅩ.含聚硫醚低聚物的萃淋树脂的合成及其吸附性能  

SYNTHESIS AND ADSORPTION PROPERTIES OF EXTRACTION RESINS CONTAINING POLYTHIOETHERS AS EXTRACTANTS

作　　者：徐羽梧[1] 杨亚核[1] 徐宁 

机构地区：[1]武汉大学化学学院

出　　处：《武汉大学学报（自然科学版）》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

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.Its 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.

关 键 词：聚硫醚 低聚物 萃淋树脂 贵金属 吸附 螯合树脂 

分 类 号：O632.32[理学—高分子化学]