Improved catalytic reactor for the electrochemical promotion of highly dispersed Ru nanoparticles with CeO2 support

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DOIResolve DOI: http://doi.org/10.1149/06101.0065ecst
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TypeArticle
Journal titleECS Transactions
ISSN1938-5862
Volume61
Issue1
Pages6574; # of pages: 10
SubjectCatalysts; Catalytic oxidation; Ethylene; Metal nanoparticles; Catalytic performance; Catalytic reactor; Current collector; Electrical contacts; Electrochemical promotion; Ethylene oxidation; Flow-type reactor; Mixed ionic-electronic conductors; Ruthenium
AbstractAn improved design for a catalytic reactor for electrochemical promotion of highly dispersed catalysts was presented and compared to that of a plug flow-type reactor for the model reaction of ethylene oxidation. Electrochemical cells were prepared with low particle size (1.1 nm) Ru nanoparticles (RuNPs) which were supported on a mixed ionic-electronic conductor, CeO2, with a low metal loading (1 wt%), interfaced with a YSZ electrolyte. Comparable catalytic performance between the two reactors was observed for both open-circuits measurements. However, the rate enhancement ratio in the single-chamber capsule (SCC) reactor was found to be 1.6 compared to 1.4 for the plug flow-type reactor for an applied current of -5μA. These results were attributed to better electrical contact to the isolated RuNPs. Furthermore, the SCC reactor is simple to assemble and provides an intimate contact between the RuNPs/CeO2 catalyst and the current collector (i.e., gold mesh).
Publication date
PublisherThe Electrochemical Society
LanguageEnglish
AffiliationNational Research Council Canada; Energy, Mining and Environment
Peer reviewedYes
NPARC number21272799
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Record identifiere350fa29-0ccd-40c0-ae77-15fbeb777b31
Record created2014-12-03
Record modified2016-05-09
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