摘要
用异步法合成了3种以大孔苯乙烯,二乙烯苯珠状树脂为第一网络、以主链为聚硫醚侧链为多乙烯多胺的交联聚合物为第二网络的互穿聚合物网络(IPN)型螯合树脂。研究了这类树脂的吸附性能及其在分离、回收铂和铼的作用。这类IPN型树脂在吸附和解吸速度方面,其性能明显优于相应的凝胶型树脂。
Three IPN chelating resins containing S and N atoms(PAC2, PAC3 and PAC4)havebeen sYntliesized by reacting polychloromethylthiirane adsorbed on macroporous crosslinkingpolystyrene bead as the first network,with polyethylene polyalnines forining a crosslinkingpolymer as the second network.The pore structure of these IPN chelating resins slich asspecific surface area,average pore diameter and pore volume have also been measlired.TheseIPN resins have good adsorbability for Re ̄(7+), Pt ̄(7+),Au ̄(3+) and Pd ̄(2+), but only difficlilty adsorbAl ̄(3+),Fe ̄(3+) and Cu ̄(2+). The adsorption and desorption rates of the PAC4 for Re ̄(7+) are muchhigher than that of the corresponding gel chelating resin PA4.Re ̄(7+) and Pt ̄(4+) can be adsorbedcolnpletely by a column with PAC4,and the metal ions adsorbed can also be released andseparated by elution first witli eluent(A)for Re ̄(7+),and then with eluient(B)for Pt ̄(4+),Thecontent of Pt in the eInate of Re was 0.02%;Re was not found in the eluate of Pt,However.
出处
《石油化工》
EI
CAS
CSCD
北大核心
1994年第1期28-32,共5页
Petrochemical Technology
基金
自然科学基金
关键词
吸附性能
螯合树脂
铂
铼
分离
IPN,chelating resin,separation of rhenium and Platinum