Tubular MFI Zeolite Membranes Made by In-Situ Crystallization

Document Type: Research Article

Authors

Nanostructure Materials Research Center (NMRC),Chemical Engineering Department, Sahand University of Technology, Tabriz, I.R. IRAN

Abstract

Polycrystalline MFI zeolite membranes were prepared on α-alumina tubular support by hydrothermal treatments at 413 K. The synthesized zeolite membranes were characterized by XRD, SEM and single gas permeation. The influence of hydrothermal treatment steps and the calcination time on the zeolite layer formation were investigated. MFI zeolite membrane prepared by four subsequent hydrothermal treatments and calcined at 673K for 30 h had optimum quality from morphological and crystalline point of view. The grown MFI zeolite layer was uniform with about 20 µm thickness and well-intergrown zeolite crystals.  

Keywords

Main Subjects

References

[1] Gardner T.Q., Lee J.B., Noble R.D., Falconer J., Adsorption and Diffusion Properties of Butanes in ZSM-5 Zeolite Membranes, Ind. Eng. Chem. Res., 41, p. 4094 (2002).

[2] Hasegawa Y., Ikeda T., Nagase T., Kiyozumi Y., Hanaoka T., Mizukami F., Preparation and Characterization of Silicalite-1 Membranes Prepared by Secondary Growth of Seeds with Different Crystal sizes, J. Membr. Sci., 280, p. 397 (2006).

[3] Noack M., lsch P.K., Seefeld V., Toussaint P., Georgi G., Caro J., Influence of the Si/Al-Ratio on the Permeation Propertiesof MFI-Membranes, Micropor. Mesopor. Mater., 79, p. 329 (2005).

[4] Xomeritakis G., Gouzinis A., Nair S., Okubo T., He M., Overney R.M., Tsapatsis M., Growth, Microstructure, and Permeation Properties of Supported Zeolite (MFI) Films and Membranes Prepared by Secondary Growth, Chem. Eng. Sci., 54, p. 3521 (1999).

[5] Vroon Z.A.E.P., Keizer K., Burggraaf A.J., Verweij H., Preparation and Characterization of Thin Zeolite MFI Membranes on Porous Supports, J. Membr. Sci.,144, p. 65 (1998).

[6] Gualtieri M.L., Gualtieri A.F., Hedlund J., The Influence of Heating Rate on Template Removal in Silicalite-1: An in Situ HT-XRPD Study, Micropor. Mesopor. Mater., 89, p. 1 (2006).

[7] Duval J.M., Folkers B., Mulder M.H.V., Desgrandchamps, G. and Smolders, C.A., Adsorbent Filled Membranes for Gas Separation. Part 1. Improvement of the Gas Separation Properties of Polymeric Membranes by Incorporation of Microporous Adsorbent, J. Membr. Sci., 80, p. 189 (1993).

[8] Bayati B., Babaluo A.A., Ahmadiyan P., Synthesis and Seeding Time Effect on the Inter-Crystalline Structure of Hydroxy-Sodalite Zeolite Membranes by Single Gas (H2 and N2) Permeation, Iran. J. Chem. Chem. Eng., 29, p. 1 (2009).

[9] Yan Y., Davis M.E., Gavalas G.R., Preparation of Zeolite ZSM-5 Membranes by In-Situ Crystallization
on Porous α-Al203, Ind. Eng. Chem. Res., 34, p. 1652 (1995).

[10] Raileanu M., Popa M., Moreno J.M.C., Stanciu L., Bordeianu, L. and Zaharescu, M., Preparation and Characterization of Alumina Supported Silicalite Membranes by Sol-Gel Hydrothermal Method,
J. Membr. Sci., 210, p. 197 (2002).

[11] Cheng Y., Wang L., Li J., Yang, Y., Sun X., Preparation and Characterization of Nanosized ZSM-5 Zeolites in the Absence of Organic Template, Mater. Lett., 59, p. 3427 (2005).

[12] Szostak R., "Handbook of Molecular Sieves", Van Nostrand Reinhold, New York, (1992).

[13] Geus E.R., Van Bekkum H., Calcination of Large MFI-Type Single Crystals, Part 2. Crack Formation and Thermomechanical Properties in View of the Preparation of Zeolite Membranes, Zeolites, 15, p. 333 (1995).

[14] Dong J., Lin Y.S., Hu M.Z., 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).

[15] Bayati B., Babaluo A.A., Manufacturing Porous Support of Ceramic Membranes and Debinding Behavior in Gel-Casting Method, 11th National Iranian Chemical Engineering Congress, 28-30 Nonember 2006, Chemical Engineering Department, Tarbiat Modares University, Iran.

[16] Gualtieri M.L., Gualtieri A.F., Hedlund J., The Influence of Heating rate on Template Removal in Silicalite-1: an in Situ HT-XRPD Study, Micropor. Mesopor. Mater., 89, p. 1 (2005).

[17] Barrer R.M., Porous Crystal Membranes, J. Chem. Soc. Faraday Trans., 86, p. 1123 (1990).

[18] Bakker W.J.W., Kapteijn F., Poppe J., Moulijn A., Permeation Characteristics of a Metal-Supported Silicalite-1 Zeolite Membrane, J. Memb. Sci., 117, p. 57 (1996)

Iranian Journal of Chemistry and Chemical Engineering (IJCCE)

Volume 31, Issue 2 - Serial Number 62
May and June 2012
Pages 37-44

Files

Share

How to cite

Statistics