期刊论文

Synthesis of Toluene Hypercross-Linked Macroporous Resins Modified by Aminopyridine and Their Adsorptive Properties

中文

化学与生物工程

1672-5425

2016

33

1

26-29

10.3969/j.issn.1672-5425.2016.01.006

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通过傅克烷基化反应,以氯甲基化聚苯乙烯（CMP）与甲苯反应制备氯含量为6.38%的甲苯超高交联大孔树脂GQ-06,然后采用2-氨基吡啶对GQ-06进行化学修饰,制备氯含量为1.36%的甲苯超高交联大孔树脂GQ-08,并比较了CMP、GQ-06与GQ-08对水杨酸吸附性能的差异。结果表明,相较于CMP与GQ-06,GQ-08对水杨酸的吸附大大增强,并在pH=2.75时对水杨酸的吸附量达最大值310.7mg·g（-1）,分别是CMP与GQ-06的10.1倍与4.1倍;GQ-08对水杨酸的吸附是放热过程,当溶液中NaCl含量增加时,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。2-氨基吡啶修饰的甲苯超高交联大孔树脂吸附水杨酸存在离子交换吸...

The toluene hypercross-linked macroporous resins GQ-06 containing 6.38% chlorine were syn-thesized with chloromethylated polystyrene（CMP） and toluene through a Friedel-Crafts reaction. The GQ-06resins were further modified by 2-aminopyridine to obtain the toluene hypercross-linked resins GQ-08 contai-ning 1.36% chlorine. Then,the adsorptive properties of salicylic acid for CMP,GQ-06 and GQ-08 resins werecompared. The results showed that when pH=2.75 the maximum adsorptive capacity （310.7 mg · g-1 ） of sali-cylic acid for GQ-08 was observed...