提出了一套系统选择具有高透氧能力、结构稳定性及热化学稳定性的钙钛矿型混合氧离子电子导体透氧膜材料的策略,在此策略指导下开发出了若干新的导体膜材料.采用了标准陶瓷法、络合法等对材料进行了合成,采用色谱法及X射线粉末衍射法分别对其透氧性能与稳定性进行了测定与表征,并将其与几种典型透氧膜材料进行了比较.结果表明此系列新材料确实具有预期的透氧性能与结构和热化学稳定性.典型材料,Ba0.5Sr0.5Co0.8Fe0.2O3-δ导体膜在850℃下透氧量达1.16mL[STP].cm-2.min-1,并在长达1000多小时的测定中保持稳定的透氧能力.
A strategy for the systematic selection of perovskite-type mixed conducting mem-branes with high oxygen permeability,phase stability and thermo-chemical stability was devel-oped.Several promising membrane materials were then pointed out.Some of the materials were synthesized by using standard ceramic method and complexing method,their oxygen permeability and stability were investigated and compared with several typical conducting membranes such as SrCo0.8Fe0.2O3-δ and SrCo0.5FeO3.25 etc.The results show that the new materials indeed possess the expected properties.The permeability of a typical material,Ba0.5Sr0.5Co0.8Fe0.2O3-δmembrane at 850℃ reaches 1.16mL[STP].cm-2.min-1,higher than that of SrCo0.8Fe0.2O3-δmembrane under similar operation conditions,the permeation flux can keep stable more than 1000h's operation.
参考文献
| [1] | Teraoka Y,Zhang H M,Furukawa S,et al.Chem.Lett.,1985.1743-1746. |
| [2] | Balachandran U,Dusek J T,Mieville R L,et al.Appl.Catal A: Gen.,1995,133: 19-29. |
| [3] | Foster E P,Tijm P J A,Bennett D L,et al.Stud.Surf.Sci.Catal.,1998,119: 867-874. |
| [4] | Steele B C H.Mater.Sci & Eng.1992,B13,79-87. |
| [5] | 邵宗平.混合导体透氧膜及其在甲烷部分氧化制合成气反应中的应用,博士毕业论文.中国科学院大连化学物理研究所.大连: 2000. |
| [6] | 邵宗平,熊国兴,杨维慎(SHAO Zong-Ping,et al).无机材料学报(Journal of Inorganic Materials),2000,15 (1): 124-130. |
| [7] | Shao Z P,Yang W S,Cong Y,et al.J.Membr.Sci.,2000,172: 177-188. |
| [8] | Shannon R D.Acta.Cryst.,1976,A32: 751-753. |
| [9] | Yakokawa H,Sakai N,Kawada T,et al.Solid.State.Ionics,1992,52: 43-56. |
| [10] | Kawada T,Horita T,Sakai N,et al.Solid.State.Ionics,1995,79: 201-207. |
| [11] | Tsai C Y,Dixon A G,Moser W R,et al.AIChE Journal,1997,43: 2741-2750. |
| [12] | Xu Sherman J,Thomson William J.Chem.Eng.Sci.,1999,54: 3839-3850. |
| [13] | Kilner J A,Brook R J.Solid.State.Ionics,1982,6: 237-252. |
| [14] | Cook R L,Macduff R C,Sammells A F.J.Electrochem.Soc.,1990,137: 3309-3310. |
| [15] | Cook R L,Sammells A F.Solid State Ionics,1991,45: 311-321. |
| [16] | Shao Z P,Xiong G X,Cong Y,et al.J.Membr.Sci.,2000,164: 167-176. |
| [17] | 杨维慎,邵宗平,丛~~铀,等.中国专利,申请号: 99 1 13004.9. |
| [18] | 佟建华,杨维慎,邵宗平,等.科学通报,2000,45: 2167-2171. |
| [19] | Pei S,Kleefisch M S,Kobylinsji T P.Catal.Lett.,1995,30: 201-212. |
| [20] | Shao Z P,Dong H,Xiong G X,et al.J.Membr.Sci.,accepted. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%