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Confined and in-situ zeolite synthesis: A novel strategy for defect reparation over dense Pd membranes for hydrogen separation
Yu, Jiafeng; Zhang, Jixin; Bao, Chun; Li, Hui; Xu, Hengyong; Sun, Jian
关键词Pd Membrane Defects Reparation Zeolites Hydrogen Separation
刊名SEPARATION AND PURIFICATION TECHNOLOGY
2017-08-31
DOI10.1016/j.seppur.2017.04.035
184页:43-53
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]POROUS STAINLESS-STEEL ; EFFECTIVE DIFFUSION BARRIER ; MASS-FLOW RESISTANCE ; PALLADIUM MEMBRANES ; COMPOSITE MEMBRANES ; NAA ZEOLITE ; PORE-SIZE ; THIN ; FABRICATION ; SUPPORT
英文摘要The manufacturing of ultrathin Pd based hydrogen separation membranes with high permeation performance has great potential in industrial applications. However, there usually exists a trade-off between reduced thickness and high hydrogen permselectivity which are regarded as a pair of contradictory requirements. In this study, a novel technique of confined and in-situ zeolite synthesis for defects reparation is proposed to improve the hydrogen permselectivity of preformed Pd membranes without further increasing their thickness. Two technology routes are developed for different defect dimensions. Zeolites can only grow inside large defects in one route, which is suitable for repairing broken membranes. In the other route, a thin zeolite layer is formed on Pd membrane surface, covering small defects for further enhancing selectivity. The purity of permeate hydrogen is enhanced from 99.884 to 99.994% after zeolite reparation. High purity hydrogen (99.986%) can be separated from 75% H-2/N-2 mixture with a hydrogen recovery of 91% by the repaired membrane at 500 degrees C and 0.4 MPa. (C) 2017 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000403730500005
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152121
专题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, Dalian, Peoples R China
推荐引用方式
GB/T 7714
Yu, Jiafeng,Zhang, Jixin,Bao, Chun,et al. Confined and in-situ zeolite synthesis: A novel strategy for defect reparation over dense Pd membranes for hydrogen separation[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2017,184:43-53.
APA Yu, Jiafeng,Zhang, Jixin,Bao, Chun,Li, Hui,Xu, Hengyong,&Sun, Jian.(2017).Confined and in-situ zeolite synthesis: A novel strategy for defect reparation over dense Pd membranes for hydrogen separation.SEPARATION AND PURIFICATION TECHNOLOGY,184,43-53.
MLA Yu, Jiafeng,et al."Confined and in-situ zeolite synthesis: A novel strategy for defect reparation over dense Pd membranes for hydrogen separation".SEPARATION AND PURIFICATION TECHNOLOGY 184(2017):43-53.
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