Enhanced Stability of MFI Zeolite Membranes for Separation of Ethanol/Water by Eliminating Surface Si-OH Groups

Zhengqi Wu; Chun Zhang; Li Peng; Xuerui Wang; Qingqing Kong; Xuehong Gu

doi:10.1021/acsami.7b17191

Enhanced Stability of MFI Zeolite Membranes for Separation of Ethanol/Water by Eliminating Surface Si-OH Groups

ACS Appl Mater Interfaces. 2018 Jan 31;10(4):3175-3180. doi: 10.1021/acsami.7b17191. Epub 2018 Jan 18.

Authors

Zhengqi Wu¹, Chun Zhang¹, Li Peng¹, Xuerui Wang¹, Qingqing Kong¹, Xuehong Gu¹

Affiliation

¹ College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing 210009, P. R. China.

PMID: 29319293
DOI: 10.1021/acsami.7b17191

Abstract

The practical application of pure-silica MFI zeolite membranes for ethanol/water separation by pervaporation is limited by its poor stability. Herein, we present the Si-OH eliminated MFI membranes by a simple dopamine modification, which can effectively prevent the chemical reaction between Si-OH groups and components, endowing the long-term pervaporation stability.

Keywords: MFI zeolite membrane; dopamine modification; ethanol/water separation; pervaporation; stability.