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Coupling microwave-assisted and classical heating methods for scaling-up MFI zeolite membrane synthesis

Journal of Membrane Science, ISSN: 0376-7388, Vol: 401, Page: 144-151
2012
  • 26
    Citations
  • 0
    Usage
  • 37
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    26
    • Citation Indexes
      26
  • Captures
    37

Article Description

Silicalite-1 (S-1) nano-seeds obtained by microwave-assisted (MW) heating have been used to coat industrial supports and to up-scale the synthesis of MFI zeolite membranes by secondary growth applying a classical heating (CH) method. The MW-assisted method was adapted/optimized for fast synthesis and high yield of uniform and non-aggregated S-1 nano-seeds suspensions which were directly used for seeding macroporous industrial α-Al 2 O 3 - based supports by dip-coating. The CH secondary growth yielded uniform MFI membranes, by applying optimal reaction conditions while minimizing the reaction time and consumption of chemicals. The protocol coupling MW-assisted and classical heating in zeolite membrane synthesis revealed high reproducibility and has been validated on various industrial ceramic supports: single tubes ( Pall-Exekia, Atech, Inocermic, CTI ) and also single capillaries and capillary bundles, from Hyflux, providing a higher surface/volume ratio (typically S / V > 100 m 2 /m 3 ). Membrane homogeneity has been validated by both SEM and single gas permeation measurements with N 2 and SF 6. The N 2 /SF 6 ideal selectivity was used to predict the ethanol/water separation factor for the prepared MFI membranes.

Bibliographic Details

Martin Drobek; Julius Motuzas; Martijn van Loon; Ruud W.J. Dirrix; Rinse A. Terpstra; Anne Julbe

Elsevier BV

Biochemistry, Genetics and Molecular Biology; Materials Science; Chemistry; Chemical Engineering

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