硅胶键合乙醇胺和二乙醇胺对Cu^(2+)的吸附性能研究  

The Adsorption Property of Ethanolamine and Diethanolamine Supported on Silica to Cu^(2+)

作　　者：张国远[1] 曲荣君[1] 孙昌梅[1] 王明华[1] 

机构地区：[1]鲁东大学化学与材料科学学院,山东烟台264025

出　　处：《鲁东大学学报（自然科学版）》2008年第2期154-157,共4页Journal of Ludong University:Natural Science Edition

基　　金：山东省自然科学基金(Y2005F11;Y2007B19);鲁东大学科研基金(LY20072902)

摘　　要：研究了硅胶负载乙醇胺(SiO2-MEA)和二乙醇胺(SiO2-DEA)螯合吸附剂对Cu2+的静态饱和吸附量、吸附动力学、吸附热力学、动态吸附以及pH值对其吸附能力的影响.结果表明,SiO2-MEA和SiO2-DEA对Cu2+的静态饱和吸附量分别为0.2086,0.3082 mmol/g;动力学和动态吸附过程符合Boyd方程,即为液膜扩散控制;热力学吸附过程符合Langmuir和Freundlich模型,即为单分子层吸附.The adsorption properties such as static adsorption capacities, adsorption kinetics, adsorption thermodynamics and dynamic adsorption of ethanolamine and diethanolamine supported on silica chelating resin to Cu^2＋ ions and the influence of pH value on adsorption properties were investigated. The results indicate that the static adsorption capacities of SiO2-MEA and SiO2-DEA is 0. 2086 and 0. 3082mmol/g, respectively; the adsorption kinetics and dynamic adsorption process followed G. E. Boyd equation, i.e. controlled by liquid film diffusion;adsorption thermodynamics process followed Langmuir and Freundlich model, i.e. unimolecular layer adsorption.

关 键 词：胺功能化硅胶 吸附 CU^2+ 

分 类 号：O631.1[理学—高分子化学]