Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 38, Pages 12458-12462Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201806361
Keywords
catalysis; inorganic membranes; separation; silicalite-1; zeolites
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Funding
- European Research Council (ERC) [321140]
- Gravitation Program of the Netherlands Organization for Scientific Research (NWO)
- Multiscale Catalytic Energy Conversion (MCEC)
- Netherlands Technology Foundation [STW-13941]
- European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant [702149, 748563]
- NWO through a VIDI grant
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Facile fabrication of well-intergrown, oriented zeolite membranes with tunable chemical properties on commercially proven substrates is crucial to broadening their applications for separation and catalysis. Rationally determined electrostatic adsorption can enable the direct attachment of a b-oriented silicalite-1 monolayer on a commercial porous ceramic substrate. Homoepitaxially oriented, well-intergrown zeolite ZSM-5 membranes with a tunable composition of Si/Al = 25-infinity were obtained by secondary growth of the monolayer. Intercrystallite defects can be eliminated by using Na+ as the mineralizer to promote lateral crystal growth and suppress surface nucleation in the direction of the straight channels, as evidenced by atomic force microscopy measurements. Water permeation testing shows tunable wettability from hydrophobic to highly hydrophilic, giving the potential for a wide range of applications.
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