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Remarkable Enhancement of the Rate of Cathodic Reduction of Hydrocarbonate Anions at Palladium in the Presence of Caesium Cations
Author(s) -
SpichigerUlmann Martine,
Augustynski Jan
Publication year - 1986
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19860690313
Subject(s) - chemistry , caesium , palladium , electrochemistry , cathode , inorganic chemistry , ion , polarization (electrochemistry) , cathodic protection , electrode , catalysis , organic chemistry
Steady‐state polarization curves, representative of the electrochemical reduction of HCO 3 −ions at a smooth palladium cathode, obtained in CsHCO 3 and NaHCO 3 solutions, are compared. The net current densities, associated with the electroreduction of HCO 3 −anions, measured in 1M CsHCO 3 solution are shown to be up to 9 times larger than those observed in 1M NaHCO 3 solution. This result is interpreted in terms of a direct involvement of the Cs + cations in the reaction at the cathode through the formation of ion pairs with the HCO 3 −anions.