引用本文:
Yan Jun He, Xian Feng Chang, Xue Liang Dong, Chun Zhang, Wan Qin Jin, Nan Ping Xu. Effect of dopant valence on the oxygen desorption and oxygen permeability of SrCo0.4Fe0.5M0.1O3-δ(M=Ni, A1 and Zr) mixed-conducting oxides[J]. Chinese Chemical Letters,
2008, 19(6): 725-729.
doi:
10.1016/j.cclet.2008.03.003
Citation: Yan Jun He, Xian Feng Chang, Xue Liang Dong, Chun Zhang, Wan Qin Jin, Nan Ping Xu. Effect of dopant valence on the oxygen desorption and oxygen permeability of SrCo0.4Fe0.5M0.1O3-δ(M=Ni, A1 and Zr) mixed-conducting oxides[J]. Chinese Chemical Letters, 2008, 19(6): 725-729. doi: 10.1016/j.cclet.2008.03.003
Citation: Yan Jun He, Xian Feng Chang, Xue Liang Dong, Chun Zhang, Wan Qin Jin, Nan Ping Xu. Effect of dopant valence on the oxygen desorption and oxygen permeability of SrCo0.4Fe0.5M0.1O3-δ(M=Ni, A1 and Zr) mixed-conducting oxides[J]. Chinese Chemical Letters, 2008, 19(6): 725-729. doi: 10.1016/j.cclet.2008.03.003
Effect of dopant valence on the oxygen desorption and oxygen permeability of SrCo0.4Fe0.5M0.1O3-δ(M=Ni, A1 and Zr) mixed-conducting oxides
摘要:
The effect of dopant valence on oxygen desorption and oxygen permeability of SrCo0.4Fe0.5M0.1O3-δ(M=Ni, Al and Zr) mixed-conducting oxides were investigated in detail by O2-TPD and oxygen permeation measurement. The SrCo0.4Fe0.5M0.1O3-δ for M=Fe, Ni, AI and Zr were denoted as SCF, SCFN, SCFA and SCFZ, respectively. O2-TPD analysis revealed that the amount of α oxygen desorption decreased with increasing the valance of doped metal elements (SCFN > SCFA≈SCF > SCFZ). The oxygen permeation flux at the temperature higher than 1148 K decreased in the order of SCFN > SCF > SCFZ > SCFA. Single activation for oxygen permeation was observed for SCFZ oxide and the activation energies of SCF and SCFA change at around 1073K, while the change temperature of SCFN was about 1173K.
English
Effect of dopant valence on the oxygen desorption and oxygen permeability of SrCo0.4Fe0.5M0.1O3-δ(M=Ni, A1 and Zr) mixed-conducting oxides
Abstract:
The effect of dopant valence on oxygen desorption and oxygen permeability of SrCo0.4Fe0.5M0.1O3-δ(M=Ni, Al and Zr) mixed-conducting oxides were investigated in detail by O2-TPD and oxygen permeation measurement. The SrCo0.4Fe0.5M0.1O3-δ for M=Fe, Ni, AI and Zr were denoted as SCF, SCFN, SCFA and SCFZ, respectively. O2-TPD analysis revealed that the amount of α oxygen desorption decreased with increasing the valance of doped metal elements (SCFN > SCFA≈SCF > SCFZ). The oxygen permeation flux at the temperature higher than 1148 K decreased in the order of SCFN > SCF > SCFZ > SCFA. Single activation for oxygen permeation was observed for SCFZ oxide and the activation energies of SCF and SCFA change at around 1073K, while the change temperature of SCFN was about 1173K.
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Key words:
- Valence
- / Mixed-conducting oxide
- / Oxygen desorption
- / Oxygen permeability
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