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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents



  history
ID: 493428.0, Fritz-Haber-Institut / Inorganic Chemistry
Role of the membrane nanostructure on the carbon and oxygen diffusion through the Pd-Ag thin films and relationship with the H2 permeability in presence of CO2 in the feed
Authors:Abate, Salvatore; Genti, Gabriele; Perathoner, Siglinda; Genovese, C.; Su, Dang Sheng; Weinberg, Gisela
Language:English
Research Context:Pd-Ag membranes
Name of Conference/Meeting:TOCAT 6 / APCAT 5, The Sixth Tokyo Conference on Advanced Catalytic Science and Technology & The Fifth Asia Pacific Congress on Catalysis
Place of Conference/Meeting:Sapporo [Japan]
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2010-07-18
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2010-07-23
 Invitation status:invited
Audience:Experts Only
Abstract / Description:The effect of CO2 on the performances and stability of Pd-Ag membranes was investigated in relation to the membrane nanostructure comparing two different preparation methods, sequential and simultaneous electroless deposition. Both membranes shown the presence of dissociation to carbon and oxygen (deriving from CO2 in the feed) which slowly diffuse through the membrane influencing also the H2 permeability. The better performance in term of separation coefficient H2/CO2 and H2 permeability obtained using sequential deposition are attributed at the thinner and homogeneous film, with the absence of detectable grain boundaries, where the diffusion of the other species, C and O, probably took place.
Free Keywords:Hydrogen separation; palladium membrane; carbon dioxide effect
Document Type:Talk at Event
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Micro- and Nanostructure / Carbon
External Affiliations:Dipartimento di Chimica Industriale ed Ingegneria dei Materiali (INSTM – UdR Messina and ELCASS), University of Messina (Italy).
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