Synthesis and characterization of gallium-based perovskite-type dense membrane with oxygen semipermeability
文献类型：期刊论文
| 作者 | Cong, Y; Shao, ZP; Yang, WS; Xiong, GX; Lin, LW |
| 刊名 | science in china series b-chemistry
 |
| 出版日期 | 2001-06-01 |
| 卷号 | 44期号:3页码:294-303 |
| 关键词 | perovskite Ga2O3 oxygen separation membrane La0.15Sr0.85Ga0.3Fe0.7O3-delta La0.15Sr0.85Co0.3Fe0.7O3-delta |
| 英文摘要 | la0.15sr0.85ga0.3fe0.7o3-delta (lsgfo) and la0.15sr0.85co0.3fe0.7o3-delta (lscfo) mixed oxygen-ion and electron conducting oxides were synthesized by using a combined edta and citrate complexing method, and the corresponding dense membranes were fabricated. the properties of the oxide powders and membranes were characterized with combined sem, xrd, h-2-tpr, o-2-tpd techniques, mechanical strength and oxygen permeation measurement. the results showed that lsgfo had much higher thermochemical stability than lscfo due to the higher valence stability of ga3+. after the temperature-programmed reduction by 5% h-2 in ar from 20 degreesc to 1020 degreesc, the basic perovskite structure of lsgfo was successfully preserved. lsgfo also favors the oxygen vacancy formation better than lscfo. oxygen permeation measurement demonstrated that lsgfo had higher oxygen permeation flux than lscfo, but they had similar activation energy for oxygen transportation, with a value of 110 and 117 kj . mol(-1), respectively the difference in oxygen permeation fluxes was correlated with the difference in oxygen vacancy concentrations for the two materials. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | oxides ; gas ; conversion ; methane ; syngas |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000169765500008 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/85861]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cong, Y,Shao, ZP,Yang, WS,et al. Synthesis and characterization of gallium-based perovskite-type dense membrane with oxygen semipermeability[J]. science in china series b-chemistry,2001,44(3):294-303. |
| APA | Cong, Y,Shao, ZP,Yang, WS,Xiong, GX,&Lin, LW.(2001).Synthesis and characterization of gallium-based perovskite-type dense membrane with oxygen semipermeability.science in china series b-chemistry,44(3),294-303. |
| MLA | Cong, Y,et al."Synthesis and characterization of gallium-based perovskite-type dense membrane with oxygen semipermeability".science in china series b-chemistry 44.3(2001):294-303. |
入库方式： OAI收割
来源：大连化学物理研究所
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