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Junya Okazaki, Takuji Ikeda, David A Pacheco Tanaka, Margot A Llosa Tanco, Yoshito Wakui, Koichi Sato, Fujio Mizukami, Toshishige M Suzuki, Strong Interaction at the Palladium/Alumina Interface of Membrane during Hydrogen Permeation at Elevated Temperature, Chemistry Letters, Volume 37, Issue 9, September 2008, Pages 1004–1005, https://doi.org/10.1246/cl.2008.1004
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Abstract
Hydrogen flux through palladium membrane supported on α-alumina significantly decreased during permeation testing at elevated temperatures (650–850 °C). Strong interaction between palladium and α-alumina, i.e., formation of less hydrogen permeable palladium–aluminum alloy was suggested via reduction of alumina under hydrogen atmosphere at high temperature. Migration of aluminum to the membrane top surface might obstruct the dissociative adsorption of hydrogen molecules.