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Annealing effect of cermet membranes on hydrogen permeability.

Journal Article · · Chem. Lett.
Ni--SrCe{sub 0.8}Yb{sub 0.2}O{sub 3-{delta}} cermet membranes are being developed to separate hydrogen from hydrogen-containing gas mixtures at high temperature. The hydrogen flux of an annealed membrane showed higher flux than that of an as-sintered membrane. The major contribution to overall flux was from ambipolar diffusion through the metal-to-oxide grain boundary. The higher hydrogen permeation flux of an annealed membrane may be understood by its larger metal grains and lower tortuosity, leading to a less-effective length for proton diffusion.
Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
FE; NETL
DOE Contract Number:
AC02-06CH11357
OSTI ID:
914916
Report Number(s):
CL-060690
Journal Information:
Chem. Lett., Journal Name: Chem. Lett. Journal Issue: 12 ; Nov. 11, 2006 Vol. 35; ISSN 0366-7022; ISSN CMLTAG
Country of Publication:
United States
Language:
ENGLISH

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