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Title
Japanese: 
English:Hydrogen Gas Permeability and XRD Characterization of Pd60Cu40 
Author
Japanese: KEANGKimileng.  
English: Kimleng Keang.  
Language English 
Journal/Book name
Japanese: 
English: 
Volume, Number, Page        
Published date 2024 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English:2023 China-Japan-Korea Joint Symposium on Energy and Environment 
Conference site
Japanese: 
English:Xi'an China 
Abstract Hydrogen permeance of Pd-Cu alloy films containing 60 wt% Pd an/d 40 wt% Cu with two different thicknesses of 0.01 mm and 0.015 mm thicknesses was evaluated and studied the influence with a temperature range at temperatures from 300 to 500 ℃, and pressures from 0.05 MPa to 0.15 MPa. The results indicated that Pd60Cu40 with a 0.01 mm thick membrane had higher hydrogen permeance compared to a 0.015 mm thick membrane under identical conditions. In addition, when the temperature increased from 300 to 475 ℃, the hydrogen permeability increased as the feed pressure increased. Interestingly, the highest H2 permeance for both thicknesses of 0.01 mm and 0.015 mm were obtained at 475 ℃. when the membrane was in the BCC phase. This was because a phase transition occurred above 475 ℃ based on XRD analysis low hydrogen permeability of both membranes was ascribed to coring, as indicated by the existence of the FCC phase. The excellent and favorable H2 permeability of BCC Pd60Cu40 alloy was ensured by significant H diffusivity and marginal hydrogen solubility, making them promising options for the H2 separation process. However, hydrogen permeability decreased when the temperature was at 500 ℃. This was because a phase transition occurred above 475 ℃ based on XRD analysis. In summary, the Pd60Cu40 membrane crystalline phase plays a key role in determining the hydrogen permeability for both film thicknesses.
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