Nanocomposite MFI-ceramic hollow fibre membranes via pore-plugging synthesis: Prospects for xylene isomer separation
Date
2009
Authors
Daramola M.O.
Burger A.J.
Pera-Titus M.
Giroir-Fendler A.
Miachon S.
Lorenzen L.
Dalmon J.-A.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Nanocomposite MFI-alumina hollow fibres and membrane tubes have been prepared by pore-plugging hydrothermal synthesis and tested in the separation of xylene vapour mixtures. Single component and ternary xylene isomer mixtures diluted in N2 gas have been fed into the membrane lumen, while N2 gas swept over the outer membrane surface. The fibres showed a maximum p-xylene flux of 4.5 μmol m2 s-1 at 573 K for p/m/o-xylene partial pressures 0.62 kPa/0.27 kPa/0.32 kPa, the pxylene to o-xylene (p/o) separation factor showing a value of 107. As expected for a nanocomposite material, xylene fluxes show no indication of flux increase beyond 573 K due to pore opening. When comparing MFI-alumina hollow fibres to membrane tubes, the surface-to-volume ratios can be increased by one order of magnitude, allowing for more compact and cost-effective units. © 2009 Elsevier B.V. All rights reserved.
Description
Keywords
Gas separation, Hollow fibre, Hollow fibres, Hollow-fibre membrane, Membrane tubes, MFI membranes, Nanocomposite materials, O-xylene, Order of magnitude, Outer membrane, P-xylene, Pore openings, Separation factors, Single components, Surface-to-volume ratio, Xylene isomers, Aromatic hydrocarbons, Ceramic membranes, Fibers, Gases, Hydrothermal synthesis, Isomers, Nanocomposites, Separation, Xylene, Gas permeable membranes, aluminum oxide, nanocomposite, xylene, zeolite, article, ceramics, gas transport, hollow fiber membrane, isomer, pressure, priority journal, separation technique, temperature measurement
Citation
Journal of Membrane Science
337
02-Jan
337
02-Jan