摘要
聚环硫氯丙烷或环硫氯丙烷与环氧氯丙烷共聚物，在少量二乙烯三胺存在下制得交联预聚物，将交联预聚物分别与硫代硫酸钠，叠氮化钠反应，制得四种侧链带有硫代硫酸根或叠氮基的新型螯合树脂。它们对贵金属离子具有较高的吸附容量和较好的吸附选择性。
Chelate resins (CST, CEST, CSA,CEST) bearing thiosulfate or azide groups,were first synthesized by the reaction of polychloromethylthiirane (PCMT) or the copolymer of chloromethylthiirane and epichlorohydrin (PCMT ECH) with sodium thiosulfate or sodium azide using diethylenetriamine as the cross linking agent These resins adsorb strongly for Ag(I), Au(III) and Hg(II),moderately for Pt(IV) and Pd(II), as well as weakly for Cu(II), Cd(II), Zn(II),Pb(II), Cr(III), Co(II) The maximum adsorption capacities of CST for Au(III)and Ag(I) were 660 and 940 mg/g R respectively The maximum adsorption of CESA for Pt(IV) was 598 mg/g R
出处
《功能高分子学报》
CAS
CSCD
1996年第3期325-328,共4页
Journal of Functional Polymers
基金
国家自然科学基金
关键词
螯合树脂
硫代硫酸盐
叠氮酸根
吸附
Chelate resins
Polychloromethylthiirane
Thiocyanate
Thiosulfate
Noble metal
