Abstract
Aging and compositional effects of silicalite layer synthesis on a quartz surface using the vapor phase transport method were studied. Silicalite layers can be synthesized from a wide compositional range when not-aged mixtures were used. But reproducibility of the film synthesis was low due to the heterogeneity of the starting mixtures. In order to increase the reproducibility, both aging of the starting mixtures and compositional changes were attempted. Silicalite layer can be synthesized successfully on quartz surface within 0.3 of the ratio TPAOH/SiO2. Higher ratio of TPAOH/SiO2 smaller crystals are formed. If the TPAOH/SiO2 ratio is larger than 0.3, the formed silicalite crystal cannot be attached on the quartz surface. When the TPAOH/SiO2 ratio of the aged starting mixture was 0.28, requirements for both reproducibility and smaller crystal size resulted were satisfied. The crystal size and shape in the silicalite layer are also influenced by the water content in the mixture. The crystal size in the silicalite layer increases with increasing water content in the mixture.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Bai, C., Jia, M. D., Falconer, T. L. and Noble, R. D., “Preparation and Separation Properties of Silicalite Composite Membranes,”J. Membrane Science,105, 79 (1995).
Bein, T. and Brown, K., “Molecular Sieve Sensors for Selective Detection at the Nanogram Level,”J. Am. Chem. Soc,111, 7640 (1989).
Coronas, J., Falconer, J. L. and Noble, R. D., “Characterization and Permeation Properties of ZSM-5 Tubular Membranes,”AlChE J.,43(7), 1797 (1997).
Jung, M.-K., Kim, M.-H., Rhee, H.-K. and Hong, S.-S., “Aging Effects in the Synthesis of ZSM-5 Film,”Microporous and Mesoporous Materials,26, 153 (1998).
Liu, Q., Noble, R. D., Falconer, J. L. and Funke, H. H., “Organics/ water Separation by Pervaporation with a Zeolite Membrane,”J. Membrane Science,117, 163 (1996).
Matuskata, M., Nishiyama, N. and Ueyama, K., “Preparation of a Thin Zeolitic Membrane,” Zeolites and Related Microporous Materials: State of the Art, Elsevier,84B, 1183 (1996).
Plog, C., Maunz, W., Kurzwell, P., Obermeier, E. and Scheibe, C., “Combustion Gas Sensitivity of Zeolite Layers on Thin-film Capacitors,”Sensors and Actuators B,2425, 403(1995).
Sterte, J., Mintova, S., Zhang, G. and Schoeman, B. J., “ThinMolecular Sieve Films on the Noble Metal Substrates,”Zeolites,18, 387 (1997).
Yan, Y., Davis, M. E. and Gavalas, G. R., “Preparation of Zeolite ZSM-5 Membrane by In-Situ Crystallization on Porous α-Al2O3,”Ind. Eng. Chem. Res.,34, 1652 (1995).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kim, YH., Kim, MH. & Hong, SS. Synthesis of Silicalite-1 film on a quartz superface using the vapor phase transport method. Korean J. Chem. Eng. 17, 241–244 (2000). https://doi.org/10.1007/BF02707150
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02707150