Ceramic Membranes with Mixed Ionic and Electronic Conductivity

Caro, Juergen; Wei, Yanying

doi:10.1002/9781118906842.ch5

Membrane Reactor Engineering 2016

DOI: 10.1002/9781118906842.ch5

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Ceramic Membranes with Mixed Ionic and Electronic Conductivity

Juergen Caro

Yanying Wei

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Cited by 3 publications

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“…31 The practicalities for incorporating MIEC membranes into production processes were discussed by Caro and Wei. 32 Usually, asymmetric membranes are used for oxygen separation from air. [33][34][35] To z E-mail: vbelousov@imet.ac.ru decrease the diffusion path, a thin separating layer on a porous support is applied.…”

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confidence: 99%

Innovative MIEC-Redox Oxygen Separation Membranes with Combined Diffusion-Bubbling Mass Transfer: A Brief Review

Белоусов

Fedorov

Sedov

2019

J. Electrochem. Soc.

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Oxygen plays a crucial role both in human life and in human economic activity and is the third (by volume) product in the world. Accelerated development of advanced energy technologies (solar photovoltaic and petrochemical industries) as well as biotechnology has stimulated the demand for ultra-high purity oxygen (above 99.999% purity). A newly developed copper and vanadium oxidebased two-layer mixed ionic electronic conducting -redox (MIEC-Redox) membrane with combined diffusion-bubbling oxygen mass transfer is of technological interest for ultra-high purity oxygen production as it demonstrates excellent oxygen selectivity and is easily made of affordable and inexpensive materials. Fundamental understanding of the formation, microstructure, and transport properties of MIEC-Redox membranes is important to be able to synthesize them in a controlled way and assess their potential for technological exploitation. The present article highlights the latest progress made in developing this understanding and outlines the further research directions. The ways to enhance the efficiency of oxygen separation through using these innovative diffusion-bubbling membranes are discussed. The proposed strategy of transition metal oxides-based thick membrane materials with fast combined diffusion-bubbling oxygen mass transfer opens up new vista for the design of next-generation energy materials with enhanced oxygen transport.

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mentioning

confidence: 99%

Innovative MIEC-Redox Oxygen Separation Membranes with Combined Diffusion-Bubbling Mass Transfer: A Brief Review

Белоусов

Fedorov

Sedov

2019

J. Electrochem. Soc.

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Promising NiO–30 wt % Ag–40 wt % Bi2O3 Membrane Material for Separation of Oxygen from Air

Kulbakin

Fedorov

2018

Inorg. Mater. Appl. Res.

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Oxygen Ion Transport in Molten Oxide Membranes for Air Separation and Energy Conversion

Климашин

Белоусов

2017

J. Electrochem. Soc.

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Molten oxide membranes (MOMs) are a new class of ion transport inorganic membranes which demonstrate superior oxygen selectivity and permeability and could be used in electrochemical devices such as molten oxide fuel cells (MOFCs) and oxygen separators for energy conversion and air separation, respectively [Acc. Chem. Res., 50, 273 (2017)]. However, oxygen ion transport mechanisms in MOM materials are not clear enough. Understanding the oxygen ion transport mechanisms in molten oxides is important for the discovery of new MOM materials with enhanced performances that can enable the operation of the electrochemical devices more efficiently. Here we suggest an approach that adapts a dynamic polymer chain model, developed for specific molten oxides, to a wide range of melts. This generic model can evaluate the oxygen permeation fluxes through different MOM materials that are comparable to experimental data. The study of ion transport membrane (ITM) materials and processes is a rapidly expanding research interest field. This is due to the fact that the ITM-based technology modules have the potential to improve the efficiency and environmental performances of energy generation systems.1,2 ITM can separate high purity oxygen from air at elevated temperatures and have the potential to reduce the cost of oxygen production in comparison with the conventional cryogenic process.3 The mixed-conducting perovskite-type compounds, 4,5 ceramic composites, 6-9 and cermets 10-13 are used as ITM materials. The practicalities for incorporating ceramic membrane materials into industrial processes are discussed in comprehensive reviews. 1,2Recently, the molten oxide membrane (MOM) materials have been developed. 14,15 This MOM materials consist of solid grains and intergranular liquid channels. The intergranular liquid channels provide the membrane material high ionic conductivity, gas tightness, and ductility. This last property allows us to deal successfully with the problem of thermal incompatibility (difference in coefficient of thermal expansion, CTE).There 14,15 Transport properties (electrical conductivity, oxygen ion transport number, and oxygen and nitrogen permeation fluxes) of these MOM materials have been measured. [16][17][18][19][20] These membrane materials showed high oxygen selectivity and permeability. The ease of the MOM materials fabrication, combined with competitive oxygen permeability and superior oxygen selectivity, demonstrates a promising application.Understanding the oxygen ion transport mechanisms in molten oxides is important for the discovery of new MOM materials that can enable the oxygen separation and energy conversion more efficiently. Recently, a dynamic polymer chain model for oxygen ion transport in molten V 2 O 5 has been developed. [21][22][23] In this paper, we suggest an approach that adapts the dynamic polymer chain model to a wide range of melts. This generic model can predict the gas permeation fluxes through molten oxide 14,15 and carbonate [24][25][26][27][28][29] membrane materials that a...

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Ceramic Membranes with Mixed Ionic and Electronic Conductivity

Cited by 3 publications

References 87 publications

Innovative MIEC-Redox Oxygen Separation Membranes with Combined Diffusion-Bubbling Mass Transfer: A Brief Review

Innovative MIEC-Redox Oxygen Separation Membranes with Combined Diffusion-Bubbling Mass Transfer: A Brief Review

Promising NiO–30 wt % Ag–40 wt % Bi2O3 Membrane Material for Separation of Oxygen from Air

Oxygen Ion Transport in Molten Oxide Membranes for Air Separation and Energy Conversion

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