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题名: Partial oxidation of ethane to syngas in an oxygen-permeable membrane reactor
作者: Wang, HH;  Cong, Y;  Yang, WS
关键词: partial oxidation of ethane ;  membrane reactor ;  oxygen separation ;  perovskite ;  syngas
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2002-11-01
卷: 209, 期:1, 页:143-152
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: A perovskite-type oxide of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCFO) with mixed electronic and oxygen ionic conductivity at high temperatures was used as an oxygen-permeable membrane. A tubular membrane of BSCFO made by extrusion method has been used in the membrane reactor to exclusively transport oxygen for the partial oxidation of ethane (POE) to syngas with catalyst of LiLaNiO/gamma-Al2O3 at temperatures of 800-900 degreesC. After only 30 min POE reaction in the membrane reactor, the oxygen permeation flux reached at 8.2 ml cm(-2) min(-1). After that, the oxygen permeation flux increased slowly and it took 12 h to reach at 11.0 ml cm(-2) min(-1). SEM and EDS analysis showed that Sr and Ba segregations occurred on the used membrane surface exposed to air while Co slightly enriched on the membrane surface exposed to ethane. The oxygen permeation flux increased with increasing of concentration of C2H6, which was attributed to increasing of the driving force resulting from the more reducing conditions produced with an increase of concentration of C2H6 in the feed gas. The tubular membrane reactor was successfully operated for POE reaction at 875 degreesC for more than 100 h without failure, with ethane conversion of similar to 100%, CO selectivity of >91% and oxygen permeation fluxes of 10-11 ml cm(-2) min(-1). (C) 2002 Elsevier Science B.V. All rights reserved.
关键词[WOS]: ALKALI-METAL OXIDE ;  CERAMIC MEMBRANE ;  SYNTHESIS GAS ;  METHANE ;  PERMEATION ;  CATALYSTS ;  PERFORMANCE ;  MONOLITHS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000178624300011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/84905
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Wang, HH,Cong, Y,Yang, WS. Partial oxidation of ethane to syngas in an oxygen-permeable membrane reactor[J]. JOURNAL OF MEMBRANE SCIENCE,2002,209(1):143-152.
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