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Issue 83, 2020
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Fabrication of a sandwiched silicalite-1 membrane in a 2D confined space for enhanced alcohol/water separation

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Abstract

A dense zeolite layer with a thickness of approximately 500 nm was demonstrated by a confined-space strategy in a sandwiched mode of (SiO2)/(silicalite-1)/(SiO2). The gel-free secondary growth methodology bypasses the post-calcination step, avoiding excess energy consumption and possible film damage. Significantly enhanced pervaporation separation was observed with separation factors of 136 and 113, and fluxes of 2.3 and 2.2 kg m−2 h−1 for ethanol/n-butanol aqueous solutions, respectively. In addition, the membrane stability was confirmed by the 14 day pervaporation test.

Graphical abstract: Fabrication of a sandwiched silicalite-1 membrane in a 2D confined space for enhanced alcohol/water separation

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Article information


Submitted
22 Jul 2020
Accepted
01 Sep 2020
First published
01 Sep 2020

Chem. Commun., 2020,56, 12586-12588
Article type
Communication

Fabrication of a sandwiched silicalite-1 membrane in a 2D confined space for enhanced alcohol/water separation

R. Luo, H. Ding, J. Lyu, T. Fu, P. Bai, X. Guo and M. Tsapatsis, Chem. Commun., 2020, 56, 12586
DOI: 10.1039/D0CC05019A

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