球型乙二醇单苯醚-甲醛负载三乙烯四胺螯合树脂的制备及其对Cu^(2+)的吸附性能  

SYNTHESIS AND ADSORPTION PROPERTIES OF SPHERICAL ETHYLENEGLYCOL MONOPHENYLETHER-FORMALDEHYDE CHELATING RESIN CONTAINING TRIETHYLENE TETRAMINE

作　　者：王春华[1] 曲荣君[2] 纪春暖[2] 宋淑辉[2] 刘希光[2] 陈厚[2] 孙昌梅[2] 

机构地区：[1]滨州医学院药学院,烟台264003 [2]鲁东大学化学与材料科学学院,烟台264025

出　　处：《离子交换与吸附》2012年第5期393-400,共8页Ion Exchange and Adsorption

基　　金：国家自然科学基金(51073075);烟台市科技局项目(2011458);山东省自然科学基金(ZR2009BL014)

摘　　要：以乙二醇单苯醚、甲醛为原料,采用分散聚合方法制备出乙二醇单苯醚-甲醛聚合物微球;经二甲亚砜氧化,制得醛基化改性微球(PB-CHO);微球(PB-CHO)与三乙烯四胺进行Schiff碱反应及加氢反应,制备出球型乙二醇单苯醚-甲醛负载三乙烯四胺螯合树脂(PB-TETA)。对所制备的新型螯合树脂进行了红外光谱、扫描电镜等表征,并研究了PB-TETA对Cu2+的吸附性能。结果表明,在pH值为5时,PB-TETA对Cu2+的最大吸附量为0.16mmol/g;树脂对Cu2+的吸附受液膜扩散控制;吸附动力学符合拟一级动力学模型;等温吸附符合Langmuir吸附模型。A new kind of chelating resin based on ethyleneglycol monophenylether- formaldehyde polymeric beads containing triethylene tetramine （PB-TETA） was synthesized. Its structure was characterized by Fourier transform-infrared spectra （FT-IR） and scanning electron microscopy （SEM）. The adsorption capacities of the resin for Cu^2＋, Pb^2＋, Ag＋, Hg^2＋, Co^2＋, Zn^2＋, and Ni^2＋ were investigated. Specially, the adsorption kinetic and adsorption isotherm of the resin for Cu^2＋ were also studied in details. The results showed that the resins had the highest affinity to Cu^2＋ among metal ions above at pH=5. The maximum adsorption capacity was 0.16mmol/g. The kinetics data indicated that the adsorption process were governed by the film diffusion and followed pseudo-first-order rate model for PB-TETA. The isotherm adsorption results indicated that the adsorption of Cu^2＋ on PB-TETA fitted better with the Langmuir model.

关 键 词：乙二醇单苯醚-甲醛 微球 三乙烯四胺 合成 吸附 

分 类 号：TQ425.23[化学工程] TQ028.1