Preparation of dense Pd composite membranes on porous Ti-Al alloy supports by electroless plating

Dongqiang Zhang; Shouyong Zhou; Yiqun Fan; Nanping Xu; Yuehui He

doi:10.1016/j.memsci.2011.10.004

Preparation of dense Pd composite membranes on porous Ti-Al alloy supports by electroless plating

Dongqiang Zhang, Shouyong Zhou, Yiqun Fan, Nanping Xu, Yuehui He

College of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Dense Pd/TiO₂/Ti-Al alloy composite membranes on porous Ti-Al alloy supports were prepared by electroless plating. The TiO₂ membrane was applied as an inter-diffusion barrier between the Pd layer and the Ti-Al alloy support to prevent intermetallic diffusion. Electron probe microanalysis (EPMA) and EDX cross-sectional line scans showed that the intermediate layer was effective as the diffusion barrier for Pd membranes on Ti-Al alloy supports after 40h of treatment at 973K in pure hydrogen. The thickness of the resulting Pd composite membrane was approximately 14μm. The hydrogen permeance through the Pd composite membrane was 1.07×10^-3molm^-2s^-1Pa^-0.5 at 773K. The permeance and selectivity of the Pd composite membrane were measured at different temperatures and pressures. The permeance tests showed that the Pd/TiO₂/Ti-Al alloy composite membranes have high H₂/N₂ selectivity. In addition, heat cycles indicated that the structure of the Pd composite membranes was stable.

Original language	English
Pages (from-to)	24-29
Number of pages	6
Journal	Journal of Membrane Science
Volume	387-388
Issue number	1
DOIs	https://doi.org/10.1016/j.memsci.2011.10.004
State	Published - 1 Jan 2012

Keywords

Hydrogen separation
Palladium membrane
Ti-Al alloy
TiO membrane

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title = "Preparation of dense Pd composite membranes on porous Ti-Al alloy supports by electroless plating",

abstract = "Dense Pd/TiO2/Ti-Al alloy composite membranes on porous Ti-Al alloy supports were prepared by electroless plating. The TiO2 membrane was applied as an inter-diffusion barrier between the Pd layer and the Ti-Al alloy support to prevent intermetallic diffusion. Electron probe microanalysis (EPMA) and EDX cross-sectional line scans showed that the intermediate layer was effective as the diffusion barrier for Pd membranes on Ti-Al alloy supports after 40h of treatment at 973K in pure hydrogen. The thickness of the resulting Pd composite membrane was approximately 14μm. The hydrogen permeance through the Pd composite membrane was 1.07×10-3molm-2s-1Pa-0.5 at 773K. The permeance and selectivity of the Pd composite membrane were measured at different temperatures and pressures. The permeance tests showed that the Pd/TiO2/Ti-Al alloy composite membranes have high H2/N2 selectivity. In addition, heat cycles indicated that the structure of the Pd composite membranes was stable.",

keywords = "Hydrogen separation, Palladium membrane, Ti-Al alloy, TiO membrane",

author = "Dongqiang Zhang and Shouyong Zhou and Yiqun Fan and Nanping Xu and Yuehui He",

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doi = "10.1016/j.memsci.2011.10.004",

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T1 - Preparation of dense Pd composite membranes on porous Ti-Al alloy supports by electroless plating

AU - Zhang, Dongqiang

AU - Zhou, Shouyong

AU - Fan, Yiqun

AU - Xu, Nanping

AU - He, Yuehui

PY - 2012/1/1

Y1 - 2012/1/1

N2 - Dense Pd/TiO2/Ti-Al alloy composite membranes on porous Ti-Al alloy supports were prepared by electroless plating. The TiO2 membrane was applied as an inter-diffusion barrier between the Pd layer and the Ti-Al alloy support to prevent intermetallic diffusion. Electron probe microanalysis (EPMA) and EDX cross-sectional line scans showed that the intermediate layer was effective as the diffusion barrier for Pd membranes on Ti-Al alloy supports after 40h of treatment at 973K in pure hydrogen. The thickness of the resulting Pd composite membrane was approximately 14μm. The hydrogen permeance through the Pd composite membrane was 1.07×10-3molm-2s-1Pa-0.5 at 773K. The permeance and selectivity of the Pd composite membrane were measured at different temperatures and pressures. The permeance tests showed that the Pd/TiO2/Ti-Al alloy composite membranes have high H2/N2 selectivity. In addition, heat cycles indicated that the structure of the Pd composite membranes was stable.

AB - Dense Pd/TiO2/Ti-Al alloy composite membranes on porous Ti-Al alloy supports were prepared by electroless plating. The TiO2 membrane was applied as an inter-diffusion barrier between the Pd layer and the Ti-Al alloy support to prevent intermetallic diffusion. Electron probe microanalysis (EPMA) and EDX cross-sectional line scans showed that the intermediate layer was effective as the diffusion barrier for Pd membranes on Ti-Al alloy supports after 40h of treatment at 973K in pure hydrogen. The thickness of the resulting Pd composite membrane was approximately 14μm. The hydrogen permeance through the Pd composite membrane was 1.07×10-3molm-2s-1Pa-0.5 at 773K. The permeance and selectivity of the Pd composite membrane were measured at different temperatures and pressures. The permeance tests showed that the Pd/TiO2/Ti-Al alloy composite membranes have high H2/N2 selectivity. In addition, heat cycles indicated that the structure of the Pd composite membranes was stable.

KW - Hydrogen separation

KW - Palladium membrane

KW - Ti-Al alloy

KW - TiO membrane

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DO - 10.1016/j.memsci.2011.10.004

M3 - 文章

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SN - 0376-7388

VL - 387-388

SP - 24

EP - 29

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1

ER -

Preparation of dense Pd composite membranes on porous Ti-Al alloy supports by electroless plating

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Keywords

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