Removal of CO from reformate for PEFC application.

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Description

Polymer electrolyte fuel cells (PEFCs) are being actively developed worldwide for transportation applications. The fuel gas generated from reforming hydrocarbon fuels contains small amounts of CO (0.5-1 vol%), even after the water-gas shift reaction. Carbon monoxide is preferentially adsorbed on the platinum electrocatalyst in the PEFC, thus blocking the access of H{sub 2} to the surface of the catalyst and resulting in the degradation of the cell performance. Therefore, the CO concentration in the PBFC reformate must be reduced to a tolerable level of {le} 100 ppm (1). Catalytic preferential oxidation (2), anode air bleed (3), or a combination of ... continued below

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7 p.

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Lee, S. H. D. September 14, 1998.

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Description

Polymer electrolyte fuel cells (PEFCs) are being actively developed worldwide for transportation applications. The fuel gas generated from reforming hydrocarbon fuels contains small amounts of CO (0.5-1 vol%), even after the water-gas shift reaction. Carbon monoxide is preferentially adsorbed on the platinum electrocatalyst in the PEFC, thus blocking the access of H{sub 2} to the surface of the catalyst and resulting in the degradation of the cell performance. Therefore, the CO concentration in the PBFC reformate must be reduced to a tolerable level of {le} 100 ppm (1). Catalytic preferential oxidation (2), anode air bleed (3), or a combination of the two can be used to reduce CO to trace levels, but their use in a dynamically varying system is problematic. We are developing a sorption process based on the reversible complex-forming and dissociation reactions of CO with Cu(I). These reactions are well documented in patent and literature (4,5).

Physical Description

7 p.

Notes

OSTI as DE00010728

Medium: P; Size: 7 pages

Source

  • 1998 Fuel Cell Seminar, Palm Springs, CA (US), 11/16/1998--11/19/1998

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  • Report No.: ANL/CMT/CP-96056
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 10728
  • Archival Resource Key: ark:/67531/metadc619015

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  • September 14, 1998

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 11, 2017, 3:25 p.m.

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Lee, S. H. D. Removal of CO from reformate for PEFC application., article, September 14, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc619015/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.