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Initiation of oxygen permeation and POM reaction in different mixed conducting ceramic membrane reactors
Tong, Jianhua; Yang, Weishen; Suda, Hiroyuki; Haraya, Kenji; Tong JH(佟建华); Tong JH(佟建华)
关键词Oxygen Permeation Pom Reaction Ceramic Membrane Reactor
刊名CATALYSIS TODAY
2006-10-30
DOI10.1016/j.cattod.2006.02.089
118期:1-2页:144-150
收录类别ISTP ; SCI
文章类型Article
部门归属5
项目归属504
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]PEROVSKITE-TYPE OXIDES ; PARTIAL OXIDATION ; METHANE ; SYNGAS ; STABILITY ; PERMEABILITY ; SEPARATION ; CONVERSION
英文摘要The initiation of oxygen permeation and POM were studied in mixed conducting ceramic membrane reactors. Membrane material composition, and catalyst-loading mode were proven to have an important effect on the initiation of oxygen permeation and POM reaction. The initiation time for compositions of Ba0.5Sr0.5CO0.8Fe0.2O3-delta (BSCFO) and 13aCo(0.4)Fe(0.4)Zr(0.2)O(3-delta) (BCFZO) are 20 and 2 h, respectively. When the catalyst was loaded directly on the membrane surface the oxygen permeation flux increased 8-10-fold of that under air/He gradient. The good POM performance of the methane conversion, higher than 96% and the CO selectivity, higher than 95%, was achieved successfully. However, when the catalyst was loaded on a place away from the membrane surface or the catalyst was not loaded, the lower oxygen permeation flux (1-2-fold) and the poor POM performance (the methane conversion is lower than 30% and the CO selectivity is lower than 20%) were obtained. The characterization of XRD and SEM-EDS indicated that the initial process might be finished through initiating the catalyst and adjusting the membrane structure (the formation of a thin CoO containing porous layer with a thickness of about 10 mu m). The great increase of oxygen permeation flux can be ascribed to the great decrease of the oxygen partial pressure and the adjustment of the surface structure. (c) 2006 Elsevier B.V. All rights reserved.
语种英语
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WOS记录号WOS:000241489700021
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/97705
专题中国科学院大连化学物理研究所
通讯作者Tong JH(佟建华); Tong JH(佟建华)
作者单位1.Natl Inst Adv Ind Sci & Technol, AIST, Res Inst Innovat Sustainable Chem, Membrane Separat Proc Grp, Tsukuba, Ibaraki 3058565, Japan
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Tong, Jianhua,Yang, Weishen,Suda, Hiroyuki,et al. Initiation of oxygen permeation and POM reaction in different mixed conducting ceramic membrane reactors[J]. CATALYSIS TODAY,2006,118(1-2):144-150.
APA Tong, Jianhua,Yang, Weishen,Suda, Hiroyuki,Haraya, Kenji,佟建华,&佟建华.(2006).Initiation of oxygen permeation and POM reaction in different mixed conducting ceramic membrane reactors.CATALYSIS TODAY,118(1-2),144-150.
MLA Tong, Jianhua,et al."Initiation of oxygen permeation and POM reaction in different mixed conducting ceramic membrane reactors".CATALYSIS TODAY 118.1-2(2006):144-150.
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