己烷在沸石咪唑酯骨架材料ZIF-8、ZIF-67上的吸附性能研究  

Adsorption Separation of Hexane on ZIF-8 and ZIF-67

作　　者：陈乐[1] 胥平平 张致慧[1] 陈群[1] 何明阳[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2016年第4期7-12,共6页Journal of Changzhou University：Natural Science Edition

基　　金：江苏省自然科学基金青年基金(BK20130251);淮安市国际科技合作研究项目(HAC2015014)

摘　　要：常温法合成了沸石咪唑酯骨架材料ZIF-8和ZIF-67,用XRD、SEM和BET测试手段对所合成的样品进行了表征。测定了正己烷、2-甲基戊烷单组份分别在ZIF-8和ZIF-67吸附材料上的吸附等温线,结果发现各组份在ZIF-8上的静态饱和吸附量均高于ZIF-67;通过固定床动态吸附穿透实验测定了正己烷/二甲基戊烷混合液在ZIF-8上的连续流出穿透曲线,结果表明,ZIF-8对正己烷具有明显的吸附选择性,总压1.0 MPa、进料浓度比1∶1时ZIF-8对正己烷的动态吸附量为0.40 g·g^(-1)、正己烷/二甲基戊烷分离系数为5.71。Zeolitic imidazolate frameworks ZIF-8 and ZIF-67 were synthesized at room temperature. The two samples were characted by XRD, SEM and BET. The single component adsorption equilibrium isotherms for n-hexane,2-methylpentane on the two ZIF materials were measured. The results show that the static adsorbed amount of n-hexane and 2-methylpentane on ZIF-8 is higher than that on ZIF-67. The break- through curves of n-hexane/2-methylpentane mixture absorbed on ZIF-8 were obtained by continuous dy- namic adsorption experiments. The results show that ZIF-8 exhibits a higher selectivity and adsorption ca- pacity for n-hexane.At the total pressure of 1.0MPa and feed concentration ratio of 1： 1, the dynamic ad- sorption capacity of ZIF-8 for n-C6 is 0.40g · g^- 1, the separation factor is 5.71.

关 键 词：沸石咪唑酯骨架材料 吸附分离 正己烷 2-甲基戊烷 

分 类 号：O647.3[理学—物理化学]