Yttria Stabilized Zirconia Hollow Fiber Membranes

Abstract

Yttria-stabilized zirconia (YSZ) hollow fiber membranes have been developed by a combined phase inversion and sintering method. An organic binder solution (dope) containing suspended YSZ particles is spun to form a hollow fiber precursor, which is then sintered at elevated temperatures. The prepared hollow fibers have the asymmetric structure including the sponge-like structures at center, sandwiched by the long finger-like structures located at the outer and inner walls of the fibers. Experimental results indicate that by controlling the YSZ/polymer weight ratio at 9 or 10 and sintered at a temperature of 15901C or 15501C for 10 h, respectively, gas-tight asymmetric YSZ hollow fiber membranes with high mechanical strength can be obtained. J ournal

Fabrication and characterization of affordable hydrophobic ceramic hollow fibre membrane for contacting processes

“…Table 3 reports the comparison of kaolin-alumina-3 in previous studies towards membrane gas permeation and hydrophobicity. As shown, the gas permeance value obtained in this work is comparable to other works on the effects of ceramic contents and sintering temperature [15,23,[27][28][29][30][31]. Therefore, it is suggested that kaolin-alumina possesses high permeability and high hydrophobicity at low cost due to the ceramic content used and the price of the material.…”

Preparation of microtubular solid oxide fuel cells based on highly asymmetric structured electrolyte hollow fibers

“…Table 1 summarizes the conditions for the preparation of the highly asymmetric YSZ hollow fibers. More details of the preparation procedure can be found elsewhere [21][22][23]. The microstructures of the resulting YSZ hollow fibers were observed using scanning electron microscopy (SEM) (FEI Sirion200, Netherlands).…”

“…In the last decade, an immersion-induced phase inversion and sintering technique has been developed to fabricate asymmetric ceramic hollow fibers or microtubes for chemical separation and reactions [20][21][22][23]. By carefully controlling the preparation parameters, the resulting hollow fibers may possess a highly asymmetric structure consisting of a thin dense skin layer and a thick porous substrate layer [24,25].…”

Funky inorganic fibers

“…• C [62]. In addition, zirconia fibers were prepared without yttria stabilization by a template method [17,23].…”

“…Most of these Al 2 O 3 fibers were directly used as ultrafiltration (UF) or as microfiltration (MF) membrane, or were used as membrane support for other functional layers. Yttria stabilized zirconia (YSZ) has been used as material because it is the most common electrolyte material in solid oxide fuel cells (SOFCs), and because of its better chemical stability in alkali environments as compared to alumina [6,[60][61][62]. Fibers were prepared based on the common PES/NMP polymer/solvent system and thermal treatment was carried out in air which facilitates the full removal of the polymer at approximately 800…”