摘要
采用发散式合成法合成了具有不同代数的聚酰胺-胺(PAMAM)树形大分子。以SiO_2为载体,分别制备了以氨基为端基的整代吸附剂及以酯基为端基的半代吸附剂,并研究了两种吸附剂对乙醇中金属离子的吸附性能。结果表明:整代吸附剂对金属离子的吸附性能优于半代吸附剂;随着温度的升高,两种吸附剂对Co^(2+)的平衡吸附量均呈上升趋势;线性拟合相关系数均在0.900 0以上,吸附过程属于单分子吸附;随着吸附剂用量的增加,吸附量逐渐升高,吸附率逐渐减少。
Poly(amidoamine)(PAMAM)dendrimers were synthesized via divergent synthesis.Aminoterminated whole-adsorbents and ester group-terminated semi-adsorbents were prepared respectively with SiO2 as supporters.The adsorption behaviors of metal ions in ethanol by theses adsorbents were observed.The results show that the whole-adsorbents perform better than semi-adsorbents in metal ion adsorption.The equilibrium uptake of Co2+on both adsorbents ascend following the higher temperature.The correlation coefficients of linear fitting of both adsorbents are beyond 0.900 0,and the processes are categorized as single molecular adsorption.The adsorption capacity improves gradually and the adsorption rate decreases with the amount of adsorbents increasing.
作者
高丽花
Gao Lihua(Department of Environmental Engineering,North China Institute of Science and Technology,Langfang 065201,China)
出处
《合成树脂及塑料》
CAS
北大核心
2018年第2期36-40,共5页
China Synthetic Resin and Plastics
关键词
聚酰胺-胺
硅胶负载
树形大分子
吸附
poly(amidoamine)
silica gel supported
dendrimer
adsorption
