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Title: para ‐Xylene Ultra‐selective Zeolite MFI Membranes Fabricated from Nanosheet Monolayers at the Air–Water Interface

Journal Article · · Angewandte Chemie
ORCiD logo [1];  [1];  [2]; ORCiD logo [1]
  1. Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Ave. SE Minneapolis MN 55455 USA
  2. Department of Physics Augsburg University 2211 Riverside Avenue Minneapolis MN 55454 USA

Abstract The control of membrane morphology and microstructure is crucial to improve the separation performance of molecular‐sieve membranes. This can be enabled by making thin, dense, and uniform seed‐crystal coatings, which are then intergrown into continuous membranes. Herein, we show a novel and simple floating particle coating method can give closely packed monolayers of zeolite nanosheets on nonporous or porous supports. The zeolite nanosheet monolayer is formed at the air–water interface in a conical Teflon trough. As the water in the trough is drained, the monolayer is deposited on a support placed below. Membranes prepared by gel‐free secondary growth of the nanosheets deposited by this method show unprecedented ultra‐selective performance for separation of para‐ from ortho‐xylene (separation factor >10 000).

Sponsoring Organization:
USDOE
OSTI ID:
1413070
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Vol. 130 Journal Issue: 2; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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