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The Characteristics of Hydrogen Permeation through Pd-coated $Nb_{56}Ti_{23}Ni_{21}$ Alloy Membranes  

Jung, Yeong-Min (Green House Gas Center, Korea Institute of Energy Research)
Jeon, Sung-Il (Department of Chemical Engineering, Chung Nam National University)
Park, Jung-Hoon (Green House Gas Center, Korea Institute of Energy Research)
Publication Information
Membrane Journal / v.22, no.1, 2012 , pp. 1-7 More about this Journal
Abstract
We make a studyof the hydrogen permeability and chemical stability of $Nb_{56}Ti_{23}Ni_{21}$ metal alloy membrane. For this purpose, we produced the $Nb_{56}Ti_{23}Ni_{21}$ membrane which has 10 mm diameter and 0.5 mm thick, and experiment the hydrogen transport properties under two kinds of feed gas ($H_2$ 100%; $H_2$ 60% + $CO_2$ 40%) at $450^{\circ}C$C with variation of absolute pressure.The maximum hydrogen permeation flux was $5.58mL/min/cm^2$ in the absolute pressure 3 bar under pure hydrogen. And each case of feed gases about gas composition, the permeation fluxes were satisfied with Sievert's law, and the hydrogen permeation flux decreased with decrease of hydrogen partial pressure irrespective of temperature and pressure. After permeation test, we experiment the stability and durability of $Nb_{56}Ti_{23}Ni_{21}$ alloy membrane for carbon dioxide by XRD analysis.
Keywords
niobium; titanium; nickel; metal alloy membrane hydrogen separation;
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Times Cited By KSCI : 3  (Citation Analysis)
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