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题名: Experimental and simulation studies on concentration polarization in H-2 enrichment by highly permeable and selective Pd membranes
作者: Zhang, H;  Liu, DY;  He, MF;  Xu, HY;  Li, WZ
关键词: palladium membrane ;  H-2 separation ;  concentration polarization ;  mathematical model ;  NH3 decomposition
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2006-04-05
DOI: 10.1016/j.memsci.2005.07.047
卷: 274, 期:1-2, 页:83-91
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: Highly efficient Pd membranes supported on porous ceramic tubes were synthesized by a modified electroless plating method and utilized in H-2 enrichment from the gas mixture that came from an NH3 cracker. Two Pd membranes whose permeation properties varied widely had been evaluated at temperatures ranging from 623 to 773 K and under pressures up to 5.06625 x 105 Pa (5.0 atm). Experimental results revealed that the concentration polarization phenomenon played a determining role in the case of gas separation by the highly permeable and selective membranes. It caused a significant loss in both H-2 yield and purity; and therefore, the separation efficiency of H-2 generation system decreased greatly. A mathematical model was built to describe the concentration polarization phenomena in H-2 enrichment by highly permeable and selective Pd membranes under the conditions utilized. In line with the experimental observations, this model accurately predicated the dependency of permeation performance on the operation parameters such as pressure, temperature, feed gas flow rate and permeability. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: HYDROGEN SEPARATION ;  ALLOY MEMBRANES ;  PALLADIUM ;  PERMEATION ;  AMMONIA ;  DECOMPOSITION ;  MIXTURE ;  THIN
语种: 英语
WOS记录号: WOS:000236096000008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140241
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, Grad Sch, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Dept Appl Math, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, H,Liu, DY,He, MF,et al. Experimental and simulation studies on concentration polarization in H-2 enrichment by highly permeable and selective Pd membranes[J]. JOURNAL OF MEMBRANE SCIENCE,2006,274(1-2):83-91.
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