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Electrochemical preferential oxidation of CO in a reformate for fuel cell application with coupled oscillating ECPrOx reactors

Research output: Contribution to conferencePaperResearchpeer review

Authors

External Research Organisations

  • Max Planck Institute for Dynamics of Complex Technical Systems
  • Otto-von-Guericke University Magdeburg

Details

Original languageEnglish
Publication statusPublished - 2008
Externally publishedYes
Event18th International Congress of Chemical and Process Engineering, CHISA 2008 - Prague, Czech Republic
Duration: 24 Aug 200828 Aug 2008
Conference number: 18

Conference

Conference18th International Congress of Chemical and Process Engineering, CHISA 2008
Abbreviated titleCHISA 2008
Country/TerritoryCzech Republic
CityPrague
Period24 Aug 200828 Aug 2008

Abstract

A vital issue limiting the application of proton exchange membrane (PEM) fuel cells is their susceptibility to traces of CO within the hydrogen used as fuel. The CO concentration is subsequently reduced via the water gas shift reaction and via preferential oxidation (PrOx). A novel approach involving electrochemical preferential oxidation (ECPrOx) has been developed, which might have the potential to replace PrOx. The behavior of coupled ECPrOx reactors, which has a design similar to a PEM fuel cell, was studied. Using a mathematical model, the crucial importance of the configuration of the electrical connection of the cells is demonstrated. While two cells connected electrically in parallel exhibited almost the same CO conversion as a single cell, a series connection allowed an increase of ≤ 10% in the conversion. Thus, for ECPrOx scale-up purposes, electrical stacking of the reactors would be more convenient, compared with an increase of the active area of a single cell. This behavior was due to the fact that the oscillation period of the CO oxidation process adjusts to the CO level in the feed gas. This is an abstract of a paper presented at the 18th International Congress of Chemical and Process Engineering (Prague, Czech Republic 8/24-28/2008).

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Cite this

Electrochemical preferential oxidation of CO in a reformate for fuel cell application with coupled oscillating ECPrOx reactors. / Hanke-Rauschenbach, R.; Weinzierl, C.; Rihko-Struckmann, L. et al.
2008. Paper presented at 18th International Congress of Chemical and Process Engineering, CHISA 2008, Prague, Czech Republic.

Research output: Contribution to conferencePaperResearchpeer review

Hanke-Rauschenbach, R, Weinzierl, C, Rihko-Struckmann, L & Sundmacher, K 2008, 'Electrochemical preferential oxidation of CO in a reformate for fuel cell application with coupled oscillating ECPrOx reactors', Paper presented at 18th International Congress of Chemical and Process Engineering, CHISA 2008, Prague, Czech Republic, 24 Aug 2008 - 28 Aug 2008.
Hanke-Rauschenbach, R., Weinzierl, C., Rihko-Struckmann, L., & Sundmacher, K. (2008). Electrochemical preferential oxidation of CO in a reformate for fuel cell application with coupled oscillating ECPrOx reactors. Paper presented at 18th International Congress of Chemical and Process Engineering, CHISA 2008, Prague, Czech Republic.
Hanke-Rauschenbach R, Weinzierl C, Rihko-Struckmann L, Sundmacher K. Electrochemical preferential oxidation of CO in a reformate for fuel cell application with coupled oscillating ECPrOx reactors. 2008. Paper presented at 18th International Congress of Chemical and Process Engineering, CHISA 2008, Prague, Czech Republic.
Hanke-Rauschenbach, R. ; Weinzierl, C. ; Rihko-Struckmann, L. et al. / Electrochemical preferential oxidation of CO in a reformate for fuel cell application with coupled oscillating ECPrOx reactors. Paper presented at 18th International Congress of Chemical and Process Engineering, CHISA 2008, Prague, Czech Republic.
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abstract = "A vital issue limiting the application of proton exchange membrane (PEM) fuel cells is their susceptibility to traces of CO within the hydrogen used as fuel. The CO concentration is subsequently reduced via the water gas shift reaction and via preferential oxidation (PrOx). A novel approach involving electrochemical preferential oxidation (ECPrOx) has been developed, which might have the potential to replace PrOx. The behavior of coupled ECPrOx reactors, which has a design similar to a PEM fuel cell, was studied. Using a mathematical model, the crucial importance of the configuration of the electrical connection of the cells is demonstrated. While two cells connected electrically in parallel exhibited almost the same CO conversion as a single cell, a series connection allowed an increase of ≤ 10% in the conversion. Thus, for ECPrOx scale-up purposes, electrical stacking of the reactors would be more convenient, compared with an increase of the active area of a single cell. This behavior was due to the fact that the oscillation period of the CO oxidation process adjusts to the CO level in the feed gas. This is an abstract of a paper presented at the 18th International Congress of Chemical and Process Engineering (Prague, Czech Republic 8/24-28/2008).",
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Download

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T1 - Electrochemical preferential oxidation of CO in a reformate for fuel cell application with coupled oscillating ECPrOx reactors

AU - Hanke-Rauschenbach, R.

AU - Weinzierl, C.

AU - Rihko-Struckmann, L.

AU - Sundmacher, K.

N1 - Conference code: 18

PY - 2008

Y1 - 2008

N2 - A vital issue limiting the application of proton exchange membrane (PEM) fuel cells is their susceptibility to traces of CO within the hydrogen used as fuel. The CO concentration is subsequently reduced via the water gas shift reaction and via preferential oxidation (PrOx). A novel approach involving electrochemical preferential oxidation (ECPrOx) has been developed, which might have the potential to replace PrOx. The behavior of coupled ECPrOx reactors, which has a design similar to a PEM fuel cell, was studied. Using a mathematical model, the crucial importance of the configuration of the electrical connection of the cells is demonstrated. While two cells connected electrically in parallel exhibited almost the same CO conversion as a single cell, a series connection allowed an increase of ≤ 10% in the conversion. Thus, for ECPrOx scale-up purposes, electrical stacking of the reactors would be more convenient, compared with an increase of the active area of a single cell. This behavior was due to the fact that the oscillation period of the CO oxidation process adjusts to the CO level in the feed gas. This is an abstract of a paper presented at the 18th International Congress of Chemical and Process Engineering (Prague, Czech Republic 8/24-28/2008).

AB - A vital issue limiting the application of proton exchange membrane (PEM) fuel cells is their susceptibility to traces of CO within the hydrogen used as fuel. The CO concentration is subsequently reduced via the water gas shift reaction and via preferential oxidation (PrOx). A novel approach involving electrochemical preferential oxidation (ECPrOx) has been developed, which might have the potential to replace PrOx. The behavior of coupled ECPrOx reactors, which has a design similar to a PEM fuel cell, was studied. Using a mathematical model, the crucial importance of the configuration of the electrical connection of the cells is demonstrated. While two cells connected electrically in parallel exhibited almost the same CO conversion as a single cell, a series connection allowed an increase of ≤ 10% in the conversion. Thus, for ECPrOx scale-up purposes, electrical stacking of the reactors would be more convenient, compared with an increase of the active area of a single cell. This behavior was due to the fact that the oscillation period of the CO oxidation process adjusts to the CO level in the feed gas. This is an abstract of a paper presented at the 18th International Congress of Chemical and Process Engineering (Prague, Czech Republic 8/24-28/2008).

KW - electrochemical preferential oxidation (ECPrOx)

KW - proton exchange membrane fuel cells (PEM)

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M3 - Paper

T2 - 18th International Congress of Chemical and Process Engineering, CHISA 2008

Y2 - 24 August 2008 through 28 August 2008

ER -

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