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dc.contributor.authorHolm, Thomas
dc.contributor.authorDahlstrøm, Per Kristian
dc.contributor.authorBurheim, Odne Stokke
dc.contributor.authorSunde, Svein
dc.contributor.authorHarrington, David A.
dc.contributor.authorSeland, Frode
dc.date.accessioned2017-03-29T10:09:52Z
dc.date.available2017-03-29T10:09:52Z
dc.date.created2017-01-18T19:09:01Z
dc.date.issued2016
dc.identifier.citationElectrochimica Acta. 2016, 222 1792-1799.nb_NO
dc.identifier.issn0013-4686
dc.identifier.urihttp://hdl.handle.net/11250/2436160
dc.description.abstractA method for high purity aqueous electrochemical experiments at temperatures above the normal boiling point of water and at temperatures up to 140 °C is described. A three-electrode cell in a self-pressurized glass autoclave is heated in an oil bath. Slow ramping of the temperature allows efficient acquisition of kinetic parameters such as activation energies, oxidation onset potentials and Tafel slopes by using cyclic voltammetry. The oxidation of two organic alcohols with different volatilities, methanol (high volatility) and glycerol (low volatility), are studied to demonstrate the capabilities of the method. Methanol oxidation on platinum is found to have a similar mechanism at all temperatures, with either dissociative adsorption of water or dissociative adsorption of methanol as the rate-determining step. In the case of glycerol oxidation on platinum, the mechanism changes at 110 °C. At low temperatures dissociative adsorption of water or dissociative adsorption of glycerol is suggested to be the rate-determining step. At higher temperatures, a significant decrease in onset potential was observed and the glycerol is suggested to selectively oxidize to glyceraldehyde or dihydroxyacetone, with dissociative glycerol adsorption as the rate-determining step.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleMethod for studying high temperature aqueous electrochemical systems: Methanol and glycerol oxidationnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.pagenumber1792-1799nb_NO
dc.source.volume222nb_NO
dc.source.journalElectrochimica Actanb_NO
dc.identifier.doihttp://dx.doi.org/10.1016/j.electacta.2016.11.130
dc.identifier.cristin1431407
dc.description.localcode© 2016 The Authors. Published by Elsevier Ltd. Under a Creative Commons license: Attribution 4.0 International (CC BY 4.0)nb_NO
cristin.unitcode194,66,35,0
cristin.unitcode194,68,20,40
cristin.unitnameInstitutt for materialteknologi
cristin.unitnameInstitutt for elektrofag og fornybar energi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal