Abstract
Stable UiO-66 membranes were successfully prepared on macroporous alumina tubes by secondary growth and were for the first time applied in the separation of methanol/methyl tert-butyl ether (MTBE) mixtures by pervaporation. Two key factors affecting the growth of the UiO-66 membranes were investigated. It has been found that acetic acid promotes the crystallization of UiO-66 crystals and water favors the intergrowth of UiO-66 crystals, leading to the formation of high-performance UiO-66 membranes. Under the optimized synthesis conditions, a continuous and dense UiO-66 membrane could be obtained, showing a separation factor of nearly 600 and a flux of 1.21kgm−2h−1 for 5wt% methanol/MTBE mixtures at 40°C. The effects of operation parameters on PV performance of the UiO-66 membranes were also studied in detail. The results reveal that increasing feed temperature or methanol in feed would enhance permeation flux but reduce separation factor, the permeability of components and membrane selectivity. It is worth mentioning that the UiO-66 membranes show excellent operating stability. This work demonstrates that the UiO-66 membranes have great potential for separation of methanol/MTBE mixtures via pervaporation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
