【摘要】 本文合成了交联壳聚糖苯并-15-冠-5醚(简称CCTS-BX)和交联壳聚糖苯并-18-冠-6醚(简称CCTS-BY),研究了它们对Ag(Ⅰ) ,Pd(Ⅱ),Ph(Ⅱ),Cd(Ⅱ),Cr(Ⅲ)等金属离子的吸附性能和选择性.实验结果表明:无论是在单一金属离子体系还是在二元或三元金属离子体系中,CCTS-BX和CCTS-BY对 Ag(Ⅰ)和 Pd(Ⅱ)都有较高的吸附选择性更多还原

【Abstract】 In this paper,two types of crosslinked chitosan-crown ethers (CCTS-BX and CCTS-BY)were prepared by the reaction of 4’-formyl benzo-15-crown-5 ,4’-formyl benzo-18-crown-6 with crosslinked chitosan(CCTS). Adsorption and selectivity properties of the CCTS-BX and CCTS-BY for metal ions[Pd( Ⅱ) ,Ag( Ⅰ ) ,Pb(Ⅱ ) ,Cd( Ⅱ ) ,Cr( Ⅲ )] were determined,respectively. The results showed that the two adsorbents have high selectivity for Pd(Ⅱ ) and Ag(Ⅰ) in the coexistence of Pb( Ⅱ ) and Cr( Ⅲ ). The coefficients of CCTS-BX and CCTS-BY were KPd2+/Pb2+=9. 9, KAg+/Pb2+=9. 8, KPd2+/Cr3+=∞ and KPd2+/Pb2+= 11.5, KAg+/Pb2+ =7.1, /CPd2+/Cr3+ =∞, respectively.更多还原