Details
| Original language | English |
|---|---|
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | 18th International Congress of Chemical and Process Engineering, CHISA 2008 - Prague, Czech Republic Duration: 24 Aug 2008 → 28 Aug 2008 Conference number: 18 |
Conference
| Conference | 18th International Congress of Chemical and Process Engineering, CHISA 2008 |
|---|---|
| Abbreviated title | CHISA 2008 |
| Country/Territory | Czech Republic |
| City | Prague |
| Period | 24 Aug 2008 → 28 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).
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Chemical Engineering(all)
- Process Chemistry and Technology
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2008. Paper presented at 18th International Congress of Chemical and Process Engineering, CHISA 2008, Prague, Czech Republic.
Research output: Contribution to conference › Paper › Research › peer review
}
TY - CONF
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)
UR - http://www.scopus.com/inward/record.url?scp=84867431256&partnerID=8YFLogxK
M3 - Paper
T2 - 18th International Congress of Chemical and Process Engineering, CHISA 2008
Y2 - 24 August 2008 through 28 August 2008
ER -