The obtaining and properties of asymmetric ion transport membrane for separating of oxygen from air

3rd International Youth Scientific Forum with International Participation "New Materials"

Solovieva, A.A.^1,2 ; Kulbakin, I.V.^2

Bauman Moscow State Technical University (BMSTU), 5, 2nd Bauman Street, Moscow

105005, Russia^1

Baikov Institute of Metallurgy and Materials Science (IMET RAS), 49, Leninsky Prospekt, Moscow

119334, Russia^2

关键词: Asymmetric membranes;    Characteristic thickness;    Dense composites;    High temperature creep;    Ion transport membranes;    Kinetic features;    Oxygen transport;    Porous ceramics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/347/1/012036/pdf
DOI  :  10.1088/1757-899X/347/1/012036

来源: IOP

【 摘 要 】

The bilayer oxygen-permeable membrane, consisting of a thin-film dense composite based on Co3O4- 36 wt. % Bi2O3, and of a porous ceramic substrate of Co2SiO4, was synthesized and characterized. The way for obtaining of porous ceramic based on cobalt silicate was found, while the microstructure and the mechanical properties of porous ceramic were studied. Layered casting with post-pressing was used to cover the surface of porous support of Co2SiO4by the Co3O4- 36 wt. % Bi2O3- based film. Transport properties of the asymmetric membrane have been studied, the kinetic features of oxygen transport have been established, and the characteristic thickness of the membrane has been estimated. The methods to prevent the high-temperature creep of ion transport membranes based on solid/molten oxides, which are the promising ones for obtaining of pure oxygen from air, are proposed and discussed.