Kang C.-H.Lin Y.-F.Huang Y.-S.Tung K.-L.Chang K.-S.Chen J.-T.Hung W.-S.Lee K.-R.Lai J.-Y.2019-05-242019-05-24201303767388https://scholars.lib.ntu.edu.tw/handle/123456789/410433In this study, microporous ZIF-7 crystal particles were successfully incorporated into chitosan (CS) membranes to form ZIF-7/CS mixed-matrix membranes (MMMs). The as-prepared ZIF-7/CS MMMs were used to separate mixtures of water/ethanol at 25. ¢XC in the pervaporation process. The different ZIF-7 loadings in CS polymer with 0.25. g GA, such as 2.5, 4, 5, 6 and 7.5. wt%, have been tried and ZIF-7 with 5. wt% loading is the best loading condition. The separation efficiency of MMMs with 5. wt% ZIF-7 incorporation showed 19 times higher than that of the pristine CS membranes because of the rigidified polymer chain of the MMMs. The separation factor and the flux of the ZIF-7/CS membranes clearly exceed the upper limit of the previously reported CS based membranes and MMMs. The present work demonstrates better pervaporation performance of the ZIF-7 incorporated CS MMMs for the separation of water and ethanol and the feasibility of using this system for pervaporation. ? 2013 Elsevier B.V.Metal-organic frameworksMixed-matrix membranePervaparationZeolitic imidazolate frameworksjournal article10.1016/j.memsci.2013.03.0282-s2.0-84876713999https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876713999&doi=10.1016%2fj.memsci.2013.03.028&partnerID=40&md5=002501e0f505cd2fa1535f15731453ff