High performance perovskite hollow fibres for oxygen separation

Leo, Adrian; Smart, Simon; Liu, Shaomin; Costa, João C. Diniz da

doi:10.1016/j.memsci.2010.11.002

Cited by 131 publications

(80 citation statements)

References 29 publications

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“…42 If there is no influence of interfacial exchange on permeation, just like the dash line shown in the figure, the flux increase linearly with the reduction of membrane thickness. In addition, the line reveals the upper limit of oxygen fluxes through BSCF membranes at 900 C and under the oxygen partial pressure gradient of 0.21 bar/0.02 bar.…”

mentioning

confidence: 87%

Permeation model and experimental investigation of mixed conducting membranes

Zhu

Liu

et al. 2011

AIChE Journal

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A simple oxygen permeation model was developed based on the theoretical analysis of the role of interfaces of mixed conducting membranes. The developed model equations contain three resistance constants, which can be determined by correlating oxygen permeation flux to oxygen partial pressure on each side. A series of experimental measurements of oxygen fluxes of Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3À membranes over a wide range of temperature and oxygen partial pressures were tested for the regression of three resistance constants with good correlation (R > 0.997). With this model, the interfacial exchange resistances of each side can be well distinguished from the bulk-diffusion resistance under a wide-temperature range. The kinetics parameters, including interfacial exchange coefficients on each side and ionic diffusion coefficient, can be obtained through the three resistance constants. Parametric studies can predict the influences of membrane thickness, oxygen partial pressures on oxygen flux, distribution of permeation resistances, and characteristic thickness.

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mentioning

confidence: 87%

Permeation model and experimental investigation of mixed conducting membranes

Zhu

Liu

et al. 2011

AIChE Journal

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“…These type of membranes, with the characteristic rich defect chemistry, oxygen vacancies and electronic conductivity, have been used for many years for oxygen separation (although not yet at industrial scale) [29][30][31][32]. These membranes are normally meant for oxygen separation, but they can also be adjusted to H 2 separation [33].…”

Section: Miec Membranesmentioning

confidence: 99%

Process Intensification via Membrane Reactors, the DEMCAMER Project

et al. 2016

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This paper reports the findings of a FP7 project (DEMCAMER) that developed materials (catalysts and membranes) and new processes for four industrially relevant reaction processes. In this project, active, stable, and selective catalysts were developed for the reaction systems of interest and their production scaled up to kg scale (TRL5 (TRL: Technology Readiness Level)). Simultaneously, new membranes for gas separation were developed; in particular, dense supported thin palladium-based membranes for hydrogen separation from reactive mixtures. These membranes were successfully scaled up to TRL4 and used in various lab-scale reactors for water gas shift (WGS), using both packed bed and fluidized bed reactors, and Fischer-Tropsch (FTS) using packed bed reactors and in prototype reactors for WGS and FTS. Mixed ionic-electronic conducting membranes in capillary form were also developed for high temperature oxygen separation from air. These membranes can be used for both Autothermal Reforming (ATR) and Oxidative Coupling of Methane (OCM) reaction systems to increase the efficiency and the yield of the processes. The production of these membranes was scaled up to TRL3-4. The project also developed adequate sealing techniques to be able to integrate the different membranes in lab-scale and prototype reactors.

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“…In addition to its ability to support very thin walled membranes, the hollow fiber geometry also maximizes the surface area per unit volume. Recent developments show large improvements in oxygen permeation rates in hollow fibers 1,12,13,15,17,18 compared with flat, self-supported membranes. Similar results might be compared with some of the best results in the literature on flat supported membranes.…”

Section: Supported Miec Membranesmentioning

confidence: 99%

“…The perovskite structure exhibits good ionic and electronic conductivity leading to attractive oxygen flux 7 . In the last decade, intensive research has been dedicated to the preparation and characterization of MIEC membranes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] . However, a few reports can be found regarding to the preparation of crack-free membranes (with thicknesses less than 25 µm) for planar or tubular geometries.…”

Section: Introductionmentioning

confidence: 99%

Current developments of mixed conducting membranes on porous substrates

et al. 2013

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The fabrication of mixed ionic-electronic conducting (MIEC) ceramic-based membranes for oxygen separation has extensively increased in the last three decades as a promising alternative of clean energy delivery. In recent years, the interest on supported MIEC membranes has increased due to their attractive properties such as higher mechanical strength and oxygen flux compared to selfsupported membranes. This work presents a literature review on the development of supported MIEC membranes of perovskite structure. The concepts and transport mechanism of those membranes are explained and recent works on supported MIEC membranes are presented. Finally, manufacturing methods of self-supported membranes and their influence on oxygen permeation are discussed.

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High performance perovskite hollow fibres for oxygen separation

Cited by 131 publications

References 29 publications

Permeation model and experimental investigation of mixed conducting membranes

Permeation model and experimental investigation of mixed conducting membranes

Process Intensification via Membrane Reactors, the DEMCAMER Project

Current developments of mixed conducting membranes on porous substrates

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