b-Oriented MFI membranes prepared from porous silica coatings

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Aguado, Sonia and McLeary, E.E. and Nijmeijer, Arian and Luiten, Mieke and Jansen, Jacobus C. and Kapteijn, Freek (2009) b-Oriented MFI membranes prepared from porous silica coatings. Microporous and Mesoporous Materials, 120 (1-2). pp. 165-169. ISSN 1387-1811

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Abstract:The preparation of b-oriented MFI films from porous silica layers was investigated and optimized. The alumina supported silica membranes were immersed in a concentrated TPAOH solution. Finally b-oriented and well-intergrown MFI crystal films were produced by carrying out an in situ hydrothermal synthesis using a synthesis solution 1 SiO2:0.05 TPAOH:37.5–169 H2O:0.15 NaOH. The main function of the silica is twofold, it serves as a nucleation layer for the silicalite-1 and provides a smooth surface for the oriented crystal growth into a continuous layer. Prolonged synthesis duration leads to the formation of a secondary layer with increasing a-orientation.
Item Type:Article
Copyright:© 2009 Elsevier
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Link to this item:http://purl.utwente.nl/publications/70246
Official URL:http://dx.doi.org/10.1016/j.micromeso.2008.08.059
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Metis ID: 256489