ADSORPTION BEHAVIORS OF Pt(IV) AND Pd(II) ON POLYMERIC ESTER THIOUREA RESIN  

作　　者：WANG Shuai ZHONG Hong LI Haipu WANG Aiping ZHANG Qian 

机构地区：[1]College of Chemistry and Chemical Engineering, Central South University, Changsha 410083

出　　处：《Chinese Journal of Reactive Polymers》2008年第1期96-103,共8页中国反应性高分子（英文版）

基　　金：The National Natural Science Foundation of China(No.20476105)

摘　　要：Polymeric ester thiourea resin (PDTU-I) is a new kind of chelating resin with functional atoms S, N and O, so it is an excellent adsorbent for noble metal ions. In batch testes, the adsorption capacities of PDTU-I for Pt(IV) and Pd(II) increase with the increase of contact time, temperature and initial concentration of metal ions. The adsorption data fit Boyd's diffusion equation of liquid film, Langmuir adsorption isotherm and Freundlich adsorption isotherm. The maximum adsorption capacities calculated by Langmuir equation are 2.54mmol/g for Pt(IV) and 4.88mmol/g for Pd(II). According to FTIR and XPS results, functional groups of PDTU-I coordinate with noble metal ions in the adsorption process.Polymeric ester thiourea resin （PDTU-I） is a new kind of chelating resin with functional atoms S, N and O, so it is an excellent adsorbent for noble metal ions. In batch testes, the adsorption capacities of PDTU-I for Pt（IV） and Pd（II） increase with the increase of contact time, temperature and initial concentration of metal ions. The adsorption data fit Boyd＇s diffusion equation of liquid film, Langmuir adsorption isotherm and Freundlich adsorption isotherm. The maximum adsorption capacities calculated by Langmuir equation are 2.54mmol/g for Pt（IV） and 4.88mmol/g for Pd（II）. According to FTIR and XPS results, functional groups of PDTU-I coordinate with noble metal ions in the adsorption process.

关 键 词：Polyester thiourea resin Adsorption Pt（IV） Pd（II）. 

分 类 号：O647.3[理学—物理化学]