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Combined Theoretical and Experimental Studies of H2 and CO Oxidation over YSZ Surface

Gorski, Alexandr and Yurkiv, Vitaliy and Bessler, Wolfgang G. and Volpp, Hans-Robert (2011) Combined Theoretical and Experimental Studies of H2 and CO Oxidation over YSZ Surface. In: ECS Transactions, 35 (1), pp. 727-737. The Electrochemical Society. 219th ECS Meeting, 1-6, May 2011, Montreal, QC, Canada.

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Official URL: http://www.ecsdl.org/getabs/servlet/GetabsServlet?prog=normal&id=MAECES001101000012000938000001&idtype=cvips&gifs=yes

Abstract

The mechanism of H2 and CO adsorption and oxidation on yttriastabilized zirconia, frequently used as electrolyte in solid oxide fuel cell composite anodes, was investigated employing temperature-programmed spectroscopy (TPS) and density functional theory (DFT). In agreement with theory, the experimental results show that interaction of gaseous H2O with YSZ results in dissociative adsorption leading to strongly bound OH surface species. In the interaction of gaseous H2 with an oxygen-enriched YSZ surface (YSZ+O), similar OH surface species are formed as reaction intermediates in the H2 oxidation. In contrast, the interaction of CO with an oxygen-enriched YSZ leads to direct formation of gaseous CO2 via an Eley-Rideal type reaction that was also confirmed by TPS measurements.

Item URL in elib:https://elib.dlr.de/71738/
Document Type:Conference or Workshop Item (Paper, Poster)
Additional Information:DOI: 10.1149/1.3570052
Title:Combined Theoretical and Experimental Studies of H2 and CO Oxidation over YSZ Surface
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gorski, Alexandragorski (at) ichf.edu.plUNSPECIFIED
Yurkiv, VitaliyVitaliy.Yurkiv (at) dlr.deUNSPECIFIED
Bessler, Wolfgang G.Wolfgang.Bessler (at) dlr.deUNSPECIFIED
Volpp, Hans-Robertaw2 (at) ix.urz.uni-heidelberg.deUNSPECIFIED
Date:1 May 2011
Journal or Publication Title:ECS Transactions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:35
Page Range:pp. 727-737
Editors:
EditorsEmail
Singhal, S. C.UNSPECIFIED
Eguchi, K.UNSPECIFIED
Publisher:The Electrochemical Society
Status:Published
Keywords:Solid oxide fuel cell (SOFC) Hydrogen (H2) oxidation Elementary kinetic modeling Temperature programmed desorption (TPD) Density Functional Theory (DFT)
Event Title:219th ECS Meeting
Event Location:Montreal, QC, Canada
Event Type:international Conference
Event Dates:1-6, May 2011
Organizer:The Electrochemical Society
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion (old)
HGF - Program Themes:E EV - Energy process technology (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Elektrochemische Prozesse (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Yurkiv, Vitaliy
Deposited On:12 Dec 2011 15:04
Last Modified:31 Jul 2019 19:33

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