Development and characterization of polymer-grafted ceramic membranes for solvent nanofiltration

TL;DRAbstract

High performance ceramic membranes, showing high selectivity and high fluxes, can only be obtained in an asymmetric multilayer configuration. The development of such multilayer configuration includes a macroporous support that provide the mechanical integrity, one or more mesoporous interlayers to reduce the surface roughness and for proper application of an active thin microporous top layer, which determines the membrane performance. The pore size of such an asymmetric composite membrane shows a gradient in order to minimize the resistance to permeation across the membrane. The mesoporous and microporous layers are normally prepared via sol-gel methods. a fine mesoporous structure into a partially macroporous layer (-Al 2 O 3 ) with a pore size distribution in the range of 50-100 nm. For Al 3 O 2 -TiO 2 materials an increase in firing temperature results in the formation of three chemically stable phases: -Al 2 O 3 and rutile. This also results in a decrease in the corrosion behavior

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