Ultra-rapid production of MFI membranes by coupling microwave-assisted synthesis with either ozone or calcination treatment

Motuzas, J., Heng, S., Ze Lau, P. P. S., Yeung, K. L., Beresnevicius, Z. J. and Julbe, A. (2007) Ultra-rapid production of MFI membranes by coupling microwave-assisted synthesis with either ozone or calcination treatment. Microporous and Mesoporous Materials, 99 1-2: 197-205. doi:10.1016/j.micromeso.2006.06.042


Author Motuzas, J.
Heng, S.
Ze Lau, P. P. S.
Yeung, K. L.
Beresnevicius, Z. J.
Julbe, A.
Title Ultra-rapid production of MFI membranes by coupling microwave-assisted synthesis with either ozone or calcination treatment
Journal name Microporous and Mesoporous Materials   Check publisher's open access policy
ISSN 1387-1811
1873-3093
Publication date 2007-02-01
Year available 2006
Sub-type Article (original research)
DOI 10.1016/j.micromeso.2006.06.042
Open Access Status Not yet assessed
Volume 99
Issue 1-2
Start page 197
End page 205
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Abstract The objective of this work is to develop an ultra-rapid and reproducible synthesis method for thin and good quality MFI membranes by coupling MW-assisted synthesis with a rapid template removal method. After selecting the experimental conditions (160 °C-2 h-400 W) for obtaining MFI zeolite membranes with (1 0 1) (oblique) preferred orientation by MW-assisted secondary growth, a series of similar membranes were prepared and three methods were compared for the organic template removal: ozone treatment, calcination with a slow heating rate (0.2 °C/min), and calcination with a rapid heating rate (5 °C/min). Supported membranes were characterized with SEM, XRD, TGA and single gas permeation measurements. Membrane thicknesses were highly reproducible (from 1.16 to 1.26 μm). Although their ideal selectivity n/i-C4H10 does not seem to depend on the method used for removing the template (values lies in the range 47-50 between 20 °C and 50 °C), a lower permeance was obtained for the ozone activated membrane, which could result from protruding hydroxyls decorating the pore walls. This work demonstrates that thin MFI membranes can be obtained within less than two days by coupling MW-assisted synthesis with a rapid template removal method, either ozone or thermal treatment with a high-heating rate (5 °C/min).
Keyword MFI
Microwave heating
Ozone
Synthesis
Zeolite membrane
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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