Startseite Application of polyurethane membrane with surface modified ZSM-5 for pervaporation of phenol/water mixture
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Application of polyurethane membrane with surface modified ZSM-5 for pervaporation of phenol/water mixture

  • Hong Ye EMAIL logo , Xiang Zhang , Zhongguo Zhang , Boyu Song und Weiwei Song
Veröffentlicht/Copyright: 7. Februar 2017
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Abstract

In the present work, β-cyclodextrin was grafted to the surface of ZSM-5 via 2,3-epoxypropyl trimethylammonium chloride (ETMAC) and epichlorohydrin (EPI) as the bridging agent by ion exchange and sequential grafting. The mixed matrix membranes were prepared using polyurethane (PU) and ZSM-5 before and after modification. Modified ZSM-5 and corresponding MMM were characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and scanning electron microscope (SEM). These membranes were applied for the removal of phenol from aqueous solution in pervaporation process. The results showed that modified ZSM-5 dispersed homogeneously in polymer. The flux and pervaporation separation index of PU increased greatly with a limited decrease in selectivity by the addition of modified ZSM-5. The increased feed temperature enhanced both the flux and separation factor of PU and modified PU membranes.

Acknowledgments

The authors gratefully acknowledge the financial support provided by Beijing Natural Science Foundation (L140009), The Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions (CIT&TCD201404032), and National Science Foundation of China (20906001).

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Received: 2016-9-29
Accepted: 2016-12-28
Published Online: 2017-2-7
Published in Print: 2017-10-26

©2017 Walter de Gruyter GmbH, Berlin/Boston

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