期刊论文

Synthesis and adsorption properties of hypercrosslinked resin modified with aminopyridine

中文

化学研究与应用

1004-1656

2016

28

4

525-529

10.3969/j.issn.1004-1656.2016.04.018

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以氯球为原料,二氯乙烷为溶剂,FeCl_3为催化剂,利用Friedel-Crafts反应制备甲苯超高交联树脂,测其氯含量为6.38%。为降低氯含量和提高吸附性能,采用2-氨基吡啶对该高交联树脂进行化学修饰,获得的高交联树脂(记为GQ-08)氯含量下降为1.36%,然后详细研究了GQ-08对水杨酸的吸附性能。实验结果表明, GQ-08在pH 2.75时对水杨酸的吸附容量最大,达到310.7 mg·g~(-1);GQ-08对水杨酸的吸附是放热过程,吸附等温线服从Freundlich方程;当溶液中NaCl含量由0%到2%变化时,GQ-08对水杨酸的吸附量明显减少,说明氯离子与水杨酸存在竞争吸附作用,增加盐度不利于水杨酸吸附。因此,在利用GQ-08树脂进行水杨酸富集分离...

The hypercrosslinked resin containing 6. 38% chlorine were synthesized using chloromethylated polystyrene through Friedel-Crafts reaction with dichloroethane as solvent and ferric chloride as catalyst. In order to increase the adsorption perform-ance,this hypercrosslinked resin was further modified with 2-aminopyridine,which contained 1. 36%chlorine and was assigned as GQ-08. Subsequently,the adsorption properties of salicylic acid onto the GQ-08 resin was studied in detail. The results showed that the maximum adsorption capacity ( 310. 7 mg·g...