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Development of Defense Ceramic Membranes for Hydrogen Separation.

DE2001768578

Publication Date	2000
Personal Author	Lee, T. H.; Zhang, G.; Dorris, S. E.; Balachandran, U.; Rothenberger, K. S.; Martello, D. V.
Page Count	8
Abstract	We developed novel cermet (i.e., ceramic-metal composite) membranes for separating hydrogen from gas mixtures at high temperature and pressure. The hydrogen permeation rate in the temperature range of 600-900 deg C was determined for three classes of cermet membranes (ANL-1, ANL-2, and ANL-3). Among these membranes, ANL-3 showed the highest hydrogen permeation rate, with a maximum flux of 3.2 cm3/min-cm2 for a 0.23-mm-thick membrane at 900 deg C. Effects of membrane thickness and hydrogen partial pressure on permeation rate indicated that bulk diffusion of hydrogen is rate-limiting for ANL-3 membranes. The lack of degradation in permeation rate during exposure to a simulated syngas mixture suggests that ANL-3 membranes are chemically stable and suitable for long-term operation.
Keywords	Hydrogen separation Cermet membranes Synthesis gas Bulk diffusion Development Gas mixtures Temperature Pressure Membranes Hydrogen permeation rates
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Argonne National Lab., IL.; National Energy Technology Lab., Pittsburgh, PA.
Supplemental Notes	See also N1999046085. Sponsored by National Energy Technology Lab., Pittsburgh, PA.
Document Type	Technical Report
NTIS Issue Number	200122
Contract Number	DE-W-31-109-ENG-38

Development of Defense Ceramic Membranes for Hydrogen Separation.

Development of Defense Ceramic Membranes for Hydrogen Separation.
DE2001768578

Publication Date	2000
Personal Author	Lee, T. H.; Zhang, G.; Dorris, S. E.; Balachandran, U.; Rothenberger, K. S.; Martello, D. V.
Page Count	8
Abstract	We developed novel cermet (i.e., ceramic-metal composite) membranes for separating hydrogen from gas mixtures at high temperature and pressure. The hydrogen permeation rate in the temperature range of 600-900 deg C was determined for three classes of cermet membranes (ANL-1, ANL-2, and ANL-3). Among these membranes, ANL-3 showed the highest hydrogen permeation rate, with a maximum flux of 3.2 cm3/min-cm2 for a 0.23-mm-thick membrane at 900 deg C. Effects of membrane thickness and hydrogen partial pressure on permeation rate indicated that bulk diffusion of hydrogen is rate-limiting for ANL-3 membranes. The lack of degradation in permeation rate during exposure to a simulated syngas mixture suggests that ANL-3 membranes are chemically stable and suitable for long-term operation.
Keywords	Hydrogen separation Cermet membranes Synthesis gas Bulk diffusion Development Gas mixtures Temperature Pressure Membranes Hydrogen permeation rates
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Argonne National Lab., IL.; National Energy Technology Lab., Pittsburgh, PA.
Supplemental Notes	See also N1999046085. Sponsored by National Energy Technology Lab., Pittsburgh, PA.
Document Type	Technical Report
NTIS Issue Number	200122
Contract Number	DE-W-31-109-ENG-38