Details
| Original language | English |
|---|---|
| Publication status | Published - 2010 |
| Externally published | Yes |
| Event | 19th International Congress of Chemical and Process Engineering, CHISA 2010 and 7th European Congress of Chemical Engineering, ECCE-7 - Prague, Czech Republic Duration: 28 Aug 2010 → 1 Sept 2010 |
Conference
| Conference | 19th International Congress of Chemical and Process Engineering, CHISA 2010 and 7th European Congress of Chemical Engineering, ECCE-7 |
|---|---|
| Country/Territory | Czech Republic |
| City | Prague |
| Period | 28 Aug 2010 → 1 Sept 2010 |
Abstract
One of the major problems hindering the breakthrough of polymer electrolyte membrane (PEM) fuel cells is their sensitivity to traces of CO within the hydrogen used as fuel. A spatially one dimensional reactor has been investigated with a dynamic modeling approach. The model considers mass balances for the channel and the catalyst surface, as well as charge balances for the electrochemical double layers and the electrolytic membrane. Spatio-temporal patterns are observed. As the CO partial pressure decreases along the channel, the oscillation frequency is expected to fall, too. This case is observed when the electrolytic conductivity is low. With an increase in conductivity, synchronization of the oscillation starts at the reactor outlet until the whole cell oscillates in a synchronous manner. Global coupling leads to the long range spatial coupling. Diffusion coupling links adjacent sites and leads to some minor phenomena. This is an abstract of a paper presented at the 7th European Congress of Chemical Engineering 7 and the 19th International Congress of Chemical and Process Engineering CHISA (Prague, Czech Republic 8/28/2010-9/1/2010).
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Chemical Engineering(all)
- Process Chemistry and Technology
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2010. Paper presented at 19th International Congress of Chemical and Process Engineering, CHISA 2010 and 7th European Congress of Chemical Engineering, ECCE-7, Prague, Czech Republic.
Research output: Contribution to conference › Paper › Research › peer review
}
TY - CONF
T1 - Modeling pattern formation during the electrochemical preferential CO oxidation in CO/H 2 mixtures
AU - Kirsch, S.
AU - Hanke-Rauschenbach, R.
AU - Sundmacher, K.
N1 - Copyright: Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - One of the major problems hindering the breakthrough of polymer electrolyte membrane (PEM) fuel cells is their sensitivity to traces of CO within the hydrogen used as fuel. A spatially one dimensional reactor has been investigated with a dynamic modeling approach. The model considers mass balances for the channel and the catalyst surface, as well as charge balances for the electrochemical double layers and the electrolytic membrane. Spatio-temporal patterns are observed. As the CO partial pressure decreases along the channel, the oscillation frequency is expected to fall, too. This case is observed when the electrolytic conductivity is low. With an increase in conductivity, synchronization of the oscillation starts at the reactor outlet until the whole cell oscillates in a synchronous manner. Global coupling leads to the long range spatial coupling. Diffusion coupling links adjacent sites and leads to some minor phenomena. This is an abstract of a paper presented at the 7th European Congress of Chemical Engineering 7 and the 19th International Congress of Chemical and Process Engineering CHISA (Prague, Czech Republic 8/28/2010-9/1/2010).
AB - One of the major problems hindering the breakthrough of polymer electrolyte membrane (PEM) fuel cells is their sensitivity to traces of CO within the hydrogen used as fuel. A spatially one dimensional reactor has been investigated with a dynamic modeling approach. The model considers mass balances for the channel and the catalyst surface, as well as charge balances for the electrochemical double layers and the electrolytic membrane. Spatio-temporal patterns are observed. As the CO partial pressure decreases along the channel, the oscillation frequency is expected to fall, too. This case is observed when the electrolytic conductivity is low. With an increase in conductivity, synchronization of the oscillation starts at the reactor outlet until the whole cell oscillates in a synchronous manner. Global coupling leads to the long range spatial coupling. Diffusion coupling links adjacent sites and leads to some minor phenomena. This is an abstract of a paper presented at the 7th European Congress of Chemical Engineering 7 and the 19th International Congress of Chemical and Process Engineering CHISA (Prague, Czech Republic 8/28/2010-9/1/2010).
KW - Electrodissolution
KW - Oscillatory
KW - Formic Acid Fuel Cell (FAFC)
UR - http://www.scopus.com/inward/record.url?scp=84864316050&partnerID=8YFLogxK
M3 - Paper
T2 - 19th International Congress of Chemical and Process Engineering, CHISA 2010 and 7th European Congress of Chemical Engineering, ECCE-7
Y2 - 28 August 2010 through 1 September 2010
ER -