期刊论文

中文

离子交换与吸附

1001-5493

2022

38

2

142-150

10.16026/j.cnki.iea.2022020142

国家自然科学基金项目（51678225）； 湖南省教育厅科学研究项目（20C0350）； 湖南省自然科学基金项目（2022JJ50278）资助；

本校为第一机构

为了提高苯乙烯系非极性大孔树脂X-5表面的极性,将X-5树脂经氯乙酰化和胺化两步改性,成功制备了负载邻氨基吡啶的氯乙酰化和胺化的X-5树脂(命名为GX-5)。对比研究了GX-5和X-5两种树脂的孔结构变化以及两种树脂对阿司匹林的吸附性能。结果表明,相比X-5树脂,GX-5树脂的BET比表面积、孔容和平均孔径均减小。X-5树脂对阿司匹林的吸附量随溶液pH值的变化规律与阿司匹林分子比随溶液p H值的变化规律相一致,GX-5树脂在溶液的pH=3.07时对阿司匹林的吸附量最大。在相同吸附条件下,相比X-5树脂,GX-5树脂对阿司匹林的准一级动力学方程吸附速率常数k1更大且吸附量更高。X-5树脂所吸附的阿司匹林可用浓度大于...

To improve the surface polarity of the non-polar macroporous styrene X-5 resin, X-5 resin was modified by chloroacetylation and amination in two steps. Chloroacetylated and aminated X-5 resin supported by o-aminopyridine (named as GX-5) were prepared. The pore structure changes of GX-5 and X-5 resins were compared, and the adsorption properties of aspirin by the two resins were investigated in contrast. The results showed that BET specific surface area, pore volume and average pore diameter of GX-5 were smaller than those of X-5. The adsorption...