Low-temperature CVI modification of γ-alumina membranes


Nijmeijer, A. and Bladergroen, B.J. and Verweij, H. (1998) Low-temperature CVI modification of γ-alumina membranes. Microporous and Mesoporous Materials , 25 (1-3). pp. 179-184. ISSN 1387-1811

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Abstract:Microporous silica membranes have been prepared by low-temperature chemical vapor infiltration (CVI) of supported mesoporous γ-alumina membranes. The best results were obtained with silicon tetra-acetate as precursor with H2:N2 membrane selectivities of >40 and a H2 permeance of 4×10−7 mol/m2 s Pa at 250°C. This permeance compares favorably with that of state-of-the-art microporous CVI silica membranes. Experiments with silane as precursor did, however, not lead to selectivity improvements of the starting membranes.
Item Type:Article
Copyright:© 1998 Elsevier Science
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Link to this item:http://purl.utwente.nl/publications/72307
Official URL:https://doi.org/10.1016/S1387-1811(98)00205-4
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