详情介绍

D301是在大孔结构的苯乙烯-二乙烯苯共聚体上主要带有叔胺基-N(CH3)2的阴离子交换树脂。其碱性较弱，能在酸性近中性介质中有效地交换无机酸及硅酸根，并能吸附分子尺寸较大的杂质以及在非水溶液中使用。该树脂具有再生效率高、交换容量大、抗污染能力强、机械强度好的优点。

主要用于纯水及高纯水制备，电镀含铬废水处理等

研究了酸性条件下氯酚在大孔弱碱树脂D301上的吸附机理。研究表明,在一定的吸附质浓度及pH值下,D301树脂对对氯酚和邻氯酚的吸附量与溶液平衡浓度之间存在良好的线性关系,吸附过程类似于固相萃取过程,且分配系数与相应pH值下X射线光电子能谱(XPS)测得的树脂上自由叔胺基团含量呈线性关系。

In the present study X-ray photoelectron spectroscopy (XPS) was adopted to elucidate sorption mechanism of o-chlorophenol and p-chlorophenol onto a weak anion exchanger D301. The distribution of specific forms of amino groups on D301 was obtained and effect of free tertiary amine group on phenol sorption onto D301 was discussed. The result indicate that less free amino group on D301 caused by external solution with lower pH leads to less sorptive capacity of o-chlorophenol and p-chlorophenol respectively. U...