Microwave Assisted Synthesis of Nano Zeolite Seed for Synthesis Membrane and Investigation of its Permeation Properties for H2 Separation

Document Type : Research Note


1 Faculty of Chemical Engineering, Isfahan University of Technology, P.O. Box 84156-83111 Isfahan, I.R. IRAN

2 Department of Chemical and Biochemical Engineering, Faculty of Engineering, The University of Western Ontario (UWO), Ontario, CANADA


MFI-type zeolite membranes (ZSM-5) were prepared on α-alumina tubular supports and tested for separation of H2/CO mixtures. The effect of pressure and temperature on H2 and CO flows and selectivity was investigated. The best results in this work were obtained with a ZSM-5 membrane prepared over a porous α-alumina tube seeded with zeolite nanocrystals synthesized with microwave technique. In this case the H2 permeance was obtained 2.8 × 10-6  mol/ (m2.s.Pa) with a H2/CO ideal selectivity of 4.9 at 373 K. The permeation results of four gas (H2, CO, N2, CH4) on the synthesized membrane were also investigated.


Main Subjects

[1] Sebastian V., KumakiriI., Bredesen R., Menendez M., Zeolite Membrane for CO2 Removal: Operating at High Pressure, Journal of Membrane Science, 292, p. 92 (2007).
[2] Cheng Y., Wang L., Sheng Li J., Chuan Yang Y., Sun X., Preparation and Characterization of Nanosized ZSM-5 Zeolites in the Absence of Organic Template, Materials Letters, 59, p. 3427 (2005).
[3] Mabande G.T.P., Pradhan G., Schwieger W., Hanebuth M., Dittmeyer R., Selvam T., Zampieri A., Baser H., Herrmann R., A study of Silicalite-1 and Al-ZSM-5 Membrane Synthesis on Stainless Steel Supports, Microporous and Mesoporous Materials, 75, p. 209 (2004).
[4] Kazemian H., Farhadi F., Design and Manufacturing of a Laboratory Microwave Oven by using a Kitchen Microwave Oven, Iranian Patent no. 41171 (2007).
[5] Au L.T.Y, Yeung K.L., An Investigation of the Relationship Between Microstructure and Permeation Properties of ZSM-5 Membranes, Journal of Membrane Science, 194, p. 33 (2001).
[6] Heng S., Lau P., Yeung K., Djafer M., Schrotter J., Low Temperature Ozone Treatment for Organic Template Removal from Zeolite Membrane. Journal of Membrane Science, 243, p. 69 (2004).
[7] Dong J, Lin Y.S., Hu M.Z.-C., Peascoe R.A., Payzant E.A., Template-Removal-Associated Microstructural Development of Porous-Ceramic-Supported MFI Zeolite Membranes, Micropor. Mesopor. Mater, 34, p. 241 (2000).
[8] Hedlund J., Noak M., Kolsch P., Creaser D., Caro J., Sterte J., ZSM-5 Membranes Synthesized without Organic Templates Using a Seeding Technique. Journal of Membrane Science, 159, p. 263 (1999).
[9] Baerlocher Ch., Meier W.M., Olson D.H., "Atlas of Zeolite Framework Types". 5th Ed., Elsevier (2001).
[10] Lesthaeghe D., Vansteenkiste P., Verstraelen T., Ghysels A., Okamoto K., Kirschhock C.E.A., Martens J.A., Speybroeck V.V., Waroquier M., MFI Fingerprint: How Pentasil-Induced IR Bands Shift During Zeolite Nanogrowth , J. Phys. Chem.,112, p. 9186 (2008).