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    Metallic nickel hollow fiber membranes for hydrogen separation at high temperatures

    Access Status
    Fulltext not available
    Authors
    Wang, M.
    Song, J.
    Wu, X.
    Tan, X.
    Meng, B.
    Liu, Shaomin
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Wang, M. and Song, J. and Wu, X. and Tan, X. and Meng, B. and Liu, S. 2016. Metallic nickel hollow fiber membranes for hydrogen separation at high temperatures. Journal of Membrane Science. 509: pp. 156-163.
    Source Title
    Journal of Membrane Science
    DOI
    10.1016/j.memsci.2016.02.025
    ISSN
    0376-7388
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/38599
    Collection
    • Curtin Research Publications
    Abstract

    Metallic nickel dense hollow fiber membranes were fabricated by a combined spinning and high-temperature sintering technique. Hydrogen permeation through the nickel hollow fiber membranes was measured at high temperatures up to 1000 °C using H2-containing gas mixtures fed on the shell side and N2 as the sweep gas in the fiber lumen. The experimental results indicated the sintering should be carried out at around 1400 °C for 3 h, under a hydrogen-containing atmosphere so as to reach the required densification of the nickel hollow fiber membranes. Hydrogen permeation through the dense nickel hollow fiber membranes is controlled by H-atom diffusion through the membrane bulk, and can be well described by the Sieverts' equation with the activation energy of 51.07 kJ mol-1. For the hollow fiber with wall thickness of 256 µm, the hydrogen permeation flux value reached up to 7.66×10-3 mol m-2 s-1 at 1000 °C with 100% H2-permselectivity. The Ni hollow membrane exhibits high stability in CO2, CO or steam containing atmospheres, and demonstrates a potential use in hydrogen production by high temperature hydrocarbon reforming reactions.

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