ZIF-8粒子尺寸对PDMS填充膜渗透汽化性能的影响研究  

Influence of particle dimension of ZIF-8 on pervaporation property of PDMS membrane

作　　者：郭学彬[1,2] 王莉敏 张秀秀 展侠 Guo Xuebin;Wang Limin;Zhang Xiuxiu;Zhan Xia(Key Laboratory of Cleaner Production and Integrated Resource Utilization of China NationalLight Industry,Beijing Technology and Business University,Beijing 100048;The State KeyLaboratory of Chemical Engineering,Department of Chemical Engineering,Tsinghua University,Beijing 100084;Research and Development Center,Beijing Drainage Group Co.,Ltd.,Beijing 100124)

机构地区：[1]北京工商大学中国轻工业清洁生产和资源综合利用重点实验室,北京100048 [2]北京城市排水集团有限责任公司科技研发中心,北京100124 [3]清华大学化学工程联合国家重点实验室,北京100084

出　　处：《化工新型材料》2019年第3期124-127,133,共5页New Chemical Materials

基　　金：北京市自然科学基金-市教委联合资助项目(KZ201910011012);化学工程联合国家重点实验室开放基金(SKL-ChE-18A01);北京工商大学2019年大学生科学研究与创业行动计划;北京工商大学2017年研究生科研能力提升计划项目资助(19008001374)

摘　　要：以聚偏氟乙烯(PVDF)多孔膜为支撑层,将沸石咪唑酯骨架结构材料(ZIF-8)填充到聚二甲基硅氧烷(PDMS)中,制得ZIF-8/PDMS复合膜,用于渗透汽化分离乙醇/水体系。对ZIF-8/PDMS复合膜进行了表征。考察了不同ZIF-8粒子对ZIF-8/PDMS复合膜渗透汽化分离性能的影响。研究结果表明,在金属离子与有机配体的配合比为1∶2的ZIF-8粒子,操作温度为50℃条件下,ZIF-8/PDMS复合膜的渗透通量为182.4g/(m2·h),分离因子最高为8.8。ZIF-8/PDMS composite membrane was prepared by filling the zeolite imidazole ester skeleton structure material(ZIF-8)into polydimethylsiloxane(PDMS)with polyvinylidene fluoride(PVDF)porous membrane as the support layer.ZIF-8/PDMS composite membrane was used for pervaporation separation of ethanol/water mixtures.The morphology,surface chemical properties and hydrophobicity of membranes were characterized by scanning electron microscopy(SEM),infrared spectroscopy(FT-IR)and contact angle(CA).The effects of ratio of metal ions to organic ligands on the size and morphology of ZIF-8 particles as well as the pervaporation performance of ZIF-8 filled PDMS membranes were investigated.The results showed that as the ratio of metal ions to organic ligands was 1∶2,with operation temperature of 50℃,the permeation flux was 182.4 g/(m^2·h)and the separation factor was8.8.

关 键 词：沸石咪唑酯骨架结构材料 聚二甲基硅氧烷 复合膜 乙醇/水 渗透汽化 

分 类 号：TQ051.893[化学工程]