Record number :
Title of article :
Interaction of hydrogen sulfide with Zr0.92Y0.08O2 d/40% Ni cermet
Author/Authors :
R.V. Siriwardane، نويسنده , , J.A. Poston Jr.، نويسنده , , E.P. Fisher، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
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Abstract :
The interaction of hydrogen sulfide with a cermet composed of zirconium oxide and yttrium oxide doped with metallic nickel (Ni) in the stoichiometric form Zr0.92Y0.08O2 d/40 vol% Ni and a pure nickel metal was studied at 500 and 650 8C utilizing high temperature X-ray photoelectron spectroscopy and high-temperature scanning electron microscopy. The hydrogen sulfide (H2S) did not appear to interact with the cermet at 500 8C with H2S exposures of 6 10 5 Torr for 1 h, but interaction of H2S with the cermet was observed at 650 8C at similar H2S exposures. The amount and the rate of reaction of H2S were significantly lower with the cermet than with the pure nickel metal at 650 8C with similar H2S exposures. The dispersion of nickel in the zirconium and yttrium oxide matrix decreased the reaction of H2S with nickel in the cermet.
Keywords :
High temperature cermets , Surface characterization of membranes , Ceramic membranes , Interactionof H2S with cermets , Fuel cell electrodes , Cermets , Gas separation membranes
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
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