Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation
La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) (LSCF) hollow fibres were prepared by a phase inversion/sintering method using polyetherimide as a binder. In order to overcome surface exchange kinetics limitation, LSCF hollow fibres were coated with ~200 nm palladium (Pd) nanoparticles. The O2 flux of best perfo...
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| Format: | Journal Article |
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Elsevier B.V
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/44346 |
| _version_ | 1848756974593769472 |
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| author | Yacou, C. Sunarso, J. Lin, C. Smart, S. Liu, Shaomin da Costa, J. |
| author_facet | Yacou, C. Sunarso, J. Lin, C. Smart, S. Liu, Shaomin da Costa, J. |
| author_sort | Yacou, C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) (LSCF) hollow fibres were prepared by a phase inversion/sintering method using polyetherimide as a binder. In order to overcome surface exchange kinetics limitation, LSCF hollow fibres were coated with ~200 nm palladium (Pd) nanoparticles. The O2 flux of best performing membranes increased by up to 350% in comparison to unmodified LSCF hollow fibres. Optimal enhancement was achieved with a single Pd coating. Additional coatings resulted in reduced O2 fluxes, thus counter acting the beneficial spill-over effect of the catalyst. Long term stability testing in atmospheric air at 850 °C showed that a LSCF membrane modified with a single Pd coating continually outperformed a pure LSCF hollow fibre for over 400 h, though the level of enhancement was reduced over time. A dramatic reduction in performance of more than 45% occurred within the first 24 h of testing, which was attributed to the coalescence and aggregation of Pd catalyst particles to ~1000 nm size at the LSCF grain boundaries. This greatly reduced the available area for the oxygen species to spill-over onto the LSCF surface and thus reduced the overall O2 flux. |
| first_indexed | 2025-11-14T09:20:43Z |
| format | Journal Article |
| id | curtin-20.500.11937-44346 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:20:43Z |
| publishDate | 2011 |
| publisher | Elsevier B.V |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-443462017-09-13T16:06:24Z Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation Yacou, C. Sunarso, J. Lin, C. Smart, S. Liu, Shaomin da Costa, J. Oxygen separation - Hollow fibres - Perovskites - LSCF - Pd surface modification La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) (LSCF) hollow fibres were prepared by a phase inversion/sintering method using polyetherimide as a binder. In order to overcome surface exchange kinetics limitation, LSCF hollow fibres were coated with ~200 nm palladium (Pd) nanoparticles. The O2 flux of best performing membranes increased by up to 350% in comparison to unmodified LSCF hollow fibres. Optimal enhancement was achieved with a single Pd coating. Additional coatings resulted in reduced O2 fluxes, thus counter acting the beneficial spill-over effect of the catalyst. Long term stability testing in atmospheric air at 850 °C showed that a LSCF membrane modified with a single Pd coating continually outperformed a pure LSCF hollow fibre for over 400 h, though the level of enhancement was reduced over time. A dramatic reduction in performance of more than 45% occurred within the first 24 h of testing, which was attributed to the coalescence and aggregation of Pd catalyst particles to ~1000 nm size at the LSCF grain boundaries. This greatly reduced the available area for the oxygen species to spill-over onto the LSCF surface and thus reduced the overall O2 flux. 2011 Journal Article http://hdl.handle.net/20.500.11937/44346 10.1016/j.memsci.2011.07.008 Elsevier B.V restricted |
| spellingShingle | Oxygen separation - Hollow fibres - Perovskites - LSCF - Pd surface modification Yacou, C. Sunarso, J. Lin, C. Smart, S. Liu, Shaomin da Costa, J. Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation |
| title | Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation |
| title_full | Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation |
| title_fullStr | Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation |
| title_full_unstemmed | Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation |
| title_short | Palladium surface modified La(0.6)Sr(0.4)Co(0.2)Fe(0.8)O(3-δ) hollow fibres for oxygen separation |
| title_sort | palladium surface modified la(0.6)sr(0.4)co(0.2)fe(0.8)o(3-δ) hollow fibres for oxygen separation |
| topic | Oxygen separation - Hollow fibres - Perovskites - LSCF - Pd surface modification |
| url | http://hdl.handle.net/20.500.11937/44346 |