Development of proton-conducting membranes for hydrogen separation

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The objective of this project is to develop dense ceramic membranes that can efficiently and economically separate hydrogen from gaseous mixtures (e.g., syngas, coal gas, etc.). Toward this end, materials with suitable electronic and protonic conductivities will be identified, and methods for fabricating thin, dense ceramic membranes from such materials will be developed. The chemical and mechanical stability of the membranes will be determined to estimate the expected lifetime of the membranes. Scoping-level evaluations will be performed to identify potential applications of proton membrane technology. Areas that will be evaluated include overall market scale, typical site operating scale, process integration ... continued below

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12 p.

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Balachandran, U.; Guan, J. & Dorris, S.E. July 1, 1998.

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Description

The objective of this project is to develop dense ceramic membranes that can efficiently and economically separate hydrogen from gaseous mixtures (e.g., syngas, coal gas, etc.). Toward this end, materials with suitable electronic and protonic conductivities will be identified, and methods for fabricating thin, dense ceramic membranes from such materials will be developed. The chemical and mechanical stability of the membranes will be determined to estimate the expected lifetime of the membranes. Scoping-level evaluations will be performed to identify potential applications of proton membrane technology. Areas that will be evaluated include overall market scale, typical site operating scale, process integration opportunities and issues, and alternative-source economics. The literature on mixed electronic/protonic conductors was surveyed to identify suitable candidate materials. SrCe{sub 1{minus}x}M{sub x}O{sub 3{minus}{delta}} and BaCe{sub 1{minus}x}M{sub x}O{sub 3{minus}{delta}} (where M is a fixed-valent dopant such as Ca, Y, Yb, In, Nd, or Gd) were selected for further investigation on the basis of their reported total conductivities and proton transference numbers.

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12 p.

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OSTI as DE98058040

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  • Advanced coal-based power and environmental systems `98 conference, Morgantown, WV (United States), 21-23 Jul 1998

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  • Other: DE98058040
  • Report No.: ANL/ET/CP--96705
  • Report No.: CONF-980746--
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 674577
  • Archival Resource Key: ark:/67531/metadc703802

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  • July 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Dec. 16, 2015, 12:20 p.m.

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Balachandran, U.; Guan, J. & Dorris, S.E. Development of proton-conducting membranes for hydrogen separation, article, July 1, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc703802/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.