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Comment on the Note by Vayenas and Vernoux on “The Electrochemical Promotion of Ethylene Oxidation at a Pt/YSZ Catalyst”
Author(s) -
Imbihl Ronald,
Toghan Arafat
Publication year - 2011
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201100262
Subject(s) - catalysis , electrochemistry , yttria stabilized zirconia , faraday efficiency , yttrium , spillover effect , chemistry , ethylene , ignition system , cubic zirconia , materials science , electrode , organic chemistry , physics , thermodynamics , oxide , ceramic , economics , microeconomics
Sacrificial promoter versus ignition: The Correspondence by Vayenas and Vernoux defends the “sacrificial promoter” mechanism, which involves two oxygen species, against the ignition mechanism suggested recently by Toghan et al. ( ChemPhysChem , 2010 , 11 , 1452, see picture, YSZ=yttrium‐stabilized zirconia). But is a special spillover species really required to explain the large non‐Faradaic effects found in many electrochemical promotion of catalysis (EPOC) experiments?