Effect of Process Parameters of the Phase Inversion Method on the Morphology of Microtubular Membranes
N. V. NIFTALIYEVA1,2, E. V. SHUBNIKOVA1, and A. P. NEMUDRY1
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
E-mail: niftalievanatalya@gmail.com
2Novosibirsk State University, Novosibirsk, Russia
Keywords: ceramic microtubular membranes, oxygen-permeable membranes, non-stoichiometric oxides, oxygen permeability
Pages: 551-556
Abstract
The effects of a series of process parameters (the composition of external coagulant and the air-gap distance) on the morphology of oxygen-permeable microtubular (MT) membranes were explored. The latter were prepared from non-stoichiometric Ba0.5Sr0.5 Co0.8 – xMoxFe0.2 O3 – δ perovskites (BSCFMх). It was demonstrated by scanning electron microscopy that the specific porous structure of MT membranes vanished when increasing the air gap between the draw hole and the bath with coagulant to 15 cm or using an ethanol solution. The oxygen permeability of MT membranes based on Ba0.5Sr0.5Co0.8 – xMoxFe0.2O3 – δ (x = 0, 0.02, 0.05, 0.10) with the optimum morphology in air and under СО2
was examined.
DOI: 10.15372/CSD20180515
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