Coupling microwave-assisted and classical heating methods for scaling-up MFI zeolite membrane synthesis

Drobek, Martin, Motuzas, Julius, van Loon, Martijn, Dirrix, Ruud W.J., Terpstra, Rinse A. and Julbe, Anne (2012) Coupling microwave-assisted and classical heating methods for scaling-up MFI zeolite membrane synthesis. Journal of Membrane Science, 401-402 144-151. doi:10.1016/j.memsci.2012.01.045


Author Drobek, Martin
Motuzas, Julius
van Loon, Martijn
Dirrix, Ruud W.J.
Terpstra, Rinse A.
Julbe, Anne
Title Coupling microwave-assisted and classical heating methods for scaling-up MFI zeolite membrane synthesis
Journal name Journal of Membrane Science   Check publisher's open access policy
ISSN 0376-7388
1873-3123
Publication date 2012-05-15
Sub-type Article (original research)
DOI 10.1016/j.memsci.2012.01.045
Volume 401-402
Start page 144
End page 151
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Silicalite-1 (S-1) nano-seeds obtained by microwave-assisted (MW) heating have been used to coat industrial supports and to up-scale the synthesis of MFI zeolite membranes by secondary growth applying a classical heating (CH) method. The MW-assisted method was adapted/optimized for fast synthesis and high yield of uniform and non-aggregated S-1 nano-seeds suspensions which were directly used for seeding macroporous industrial α-Al 2O 3- based supports by dip-coating. The CH secondary growth yielded uniform MFI membranes, by applying optimal reaction conditions while minimizing the reaction time and consumption of chemicals. The protocol coupling MW-assisted and classical heating in zeolite membrane synthesis revealed high reproducibility and has been validated on various industrial ceramic supports: single tubes (Pall-Exekia, Atech, Inocermic, CTI) and also single capillaries and capillary bundles, from Hyflux, providing a higher surface/volume ratio (typically S/V>100m 2/m 3). Membrane homogeneity has been validated by both SEM and single gas permeation measurements with N 2 and SF 6. The N 2/SF 6 ideal selectivity was used to predict the ethanol/water separation factor for the prepared MFI membranes.
Keyword Capillaries
Industrial supports
MFI
Microwave heating
Multicapillary bundles
Secondary growth
Up-scaling
Zeolite membranes
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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