Copper oxide - perovskite mixed matrix membranes delivering very high oxygen fluxes
MetadataShow full item record
Here we show that copper substitution in perovskite-type barium strontium cobalt copper oxide (BSCC) membranes confers extremely high oxygen fluxes well beyond the state of art, reaching 27.5 ml cm-2 min-1 at 950 °C. A key feature of BSCC is the formation of a mixed matrix catalyst-perovskite membrane caused by the segregation of copper, leading to the formation of an intergranular network of copper-rich oxide between perovskite grains. BSCC membranes delivered pressure normalised oxygen flux (i.e. permeance) of up to 86 times higher, above pressure difference of 18 kPa, as compared to best perovskite membrane, BBSC, due to the catalytic effect of segregated copper oxide. Unlike conventional dual-phase membranes which contain ion and electron conducting phases, this work shows for the first time perovskite-type membranes consisting of a mixed matrix of oxygen ion/electron conducting (perovskite) and catalytic (copper oxide) phases, thus paving the way to the development of high performance membranes for oxygen separation from air for clean energy applications.
Showing items related by title, author, creator and subject.
Influence of nitric oxide on the oxygen permeation behavior of La<inf>0.6</inf>Sr<inf>0.4</inf>Co<inf>0.2</inf>Fe<inf>0.8</inf>O<inf>3-?</inf>perovskite membranesGao, J.; Lun, Y.; Han, N.; Tan, X.; Fan, Chunyan; Liu, Shaomin (2019)© 2018 Elsevier B.V. Mixed conducting perovskite membrane has been intensively investigated as a possible new technology for oxygen production to replace the conventional cryogenic distillation which is capital and energy ...
Effect of CuO additive on the sintering and performance of niobium-doped strontium cobaltite as oxygen separation membranesZhao, J.; Chen, D.; Shao, Zongping; Liu, Shaomin (2010)In this work, the effects of CuO addition on sintering behavior, crystal structure and the oxygen permeation of SrCo0.9Nb0.1O3−δ (SCN) membranes have been investigated. XRD characterization demonstrated that copper could ...
Materials design for ceramic oxygen permeation membranes: Single perovskite vs. single/double perovskite composite, a case study of tungsten-doped barium strontium cobalt ferriteZhang, J.; Zhang, Z.; Chen, Y.; Xu, X.; Zhou, C.; Yang, G.; Zhou, W.; Shao, Zongping (2018)© 2018 Elsevier B.V. Pure oxygen is an important raw material with many important applications. The production of oxygen via a conducting ceramic membrane is a new, cost-effective and advanced technology with the advantage ...