Preparation and characterization of microporous ceramic hollow fibre membranes

Ba0.5Sr0.5Co0.8Fe0.2O3‐δ ceramic hollow‐fiber membranes for oxygen permeation

“…Subsequently, the fiber precursors are heated to remove the polymer and sintered to a porous or dense structure. Compared to other methods, such as dry spinning 20 or wet spinning 21 a system of inorganic material and binder, depositing fibers from the gas phase to a substrate, 22 pyrolyzing the polymers, 23,24 etc., the combined phaseinversion and sintering technique is simple and requires no expensive equipment. More important, because the cross section of the hollow-fiber membranes prepared by phase inversion is asymmetric (that is, a thin dense layer integrated with a porous substrate), 25 the resistance to oxygen permeation is thus very low.…”

Oxygen permeation modeling for Zr0.84Y0.16O1.92–La0.8Sr0.2Cr0.5Fe0.5O3− asymmetric membrane made by phase-inversion

“…The method was first adapted for fabrication of porous ceramics especially those with the hollow fiber geometry in 1990s [24,25], and then some ceramic membranes for oxygen permeation were also prepared by phaseinversion [26,27]. In this method, the formation of membrane structure is controlled by both the thermodynamics of the solution and the kinetics of transport process.…”

Ceramic Membranes for Hydrogen Production From Coal

“…Thin ceramic tubes (alumina, zirconia etc) had been previously made by extrusion of a ceramic powder mixed with a polymer or some other binder [15,16], or by extrusion of a particle-polymer-solvent mixture followed by gelation (phaseinversion) in a nonsolvent [17][18][19][20][21]. In both techniques the gelled precursors containing the ceramic powder and the polymer are heat-treated in air to decompose the polymer and burn out the residual carbon.…”