Low-temperature cvi modification of j-alumina membranes

Arian Nijmeijer, B.J. Bladergroen, H. Verweij

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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.
Original languageUndefined
Pages (from-to)179-184
Number of pages6
JournalMicroporous and mesoporous materials
Issue number25
Publication statusPublished - 1998


  • METIS-105401
  • IR-72307

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