Dense cermet membranes for hydrogen separation.

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Argonne National Laboratory (ANL) and the National Energy Technology Laboratory (NETL) are developing dense ceramic-based membranes for separating hydrogen from the products of coal gasification and other partial-oxidation streams. Hydrogen separation with these membranes is nongalvanic, i.e., it does not use electrodes or an external power supply to drive the separation, and hydrogen selectivity is nearly 100% because the membranes contain no interconnected porosity. Novel cermet (i.e., ceramic-metal composite) membranes have been developed to separate hydrogen from gas mixtures at high temperature and pressure. Hydrogen permeation rates have been measured in the temperature range of 600-900 C for three classes ... continued below

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11 pages

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Dorris, S. E.; Lee, T. H.; Wang, S.; Picciolo, J. J.; Dusek, J. T.; Balachandran, U. et al. August 21, 2002.

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Argonne National Laboratory (ANL) and the National Energy Technology Laboratory (NETL) are developing dense ceramic-based membranes for separating hydrogen from the products of coal gasification and other partial-oxidation streams. Hydrogen separation with these membranes is nongalvanic, i.e., it does not use electrodes or an external power supply to drive the separation, and hydrogen selectivity is nearly 100% because the membranes contain no interconnected porosity. Novel cermet (i.e., ceramic-metal composite) membranes have been developed to separate hydrogen from gas mixtures at high temperature and pressure. Hydrogen permeation rates have been measured in the temperature range of 600-900 C for three classes of cermet membranes (ANL-1, -2, and -3). ANL-3a membranes, with a thickness of 40 {micro}m, provide the highest hydrogen flux ({approx}20 cm{sup 3} [STP]/min-cm 2 at 900 C with 100% H{sub 2} as the feed gas). The effects of membrane thickness and hydrogen partial pressure on hydrogen flux indicate that the bulk diffusion of hydrogen is rate-limiting in ANL-3 membranes with a thickness >40 {micro}m. ANL-3b membranes were tested in simulated syngas at several temperatures, and no performance degradation was observed for times that approached {approx}200 h; this observation suggests that the membrane is chemically stable and may be suitable for long-term operation. The performance of membranes in separating hydrogen from high-pressure gas streams is being evaluated with NETL's in-house R and D facilities. The present status of membrane development at ANL/NETL will be presented in this paper.

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11 pages

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  • 19th Annual International Pittsburgh Coal Conference, Pittsburgh, PA (US), 09/23/2002--09/27/2002

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  • Report No.: ANL/ET/CP-108514
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 801646
  • Archival Resource Key: ark:/67531/metadc741512

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  • August 21, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 24, 2016, 6:47 p.m.

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Dorris, S. E.; Lee, T. H.; Wang, S.; Picciolo, J. J.; Dusek, J. T.; Balachandran, U. et al. Dense cermet membranes for hydrogen separation., article, August 21, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc741512/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.