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Influence of anions on methylpyridinium ion adsorption on the mercury electrode in aqueous solutions

Journal Article · · Sov. Electrochem. (Engl. Transl.); (United States)
OSTI ID:6450387
; ;
The adsorption behavior of aromatic and heterocyclic cations is known to be determined by image forces on one hand and by pi-electron interaction on the other. The first factor is effective at the negatively charged surface of the mercury electrode whereas the second factor is effective at the positively charged surface where the forces of pi-electron interaction are in opposition to the electrostatic repulsion forces of the cations. The authors of this paper study the adsorption of methylpyridinium as the aromatic cation in combination with persulfate, chlorine, bromine, and iodine as the anions. The potential range studied was limited on the anodic side by a potential of -0.1 eV, since the values of interfacial tension were poorly reproducible at more positive potentials, and on the cathodic side by a potential of -1.1 eV, since methylpyridinium is reduced at more negative potentials. It is found that the halide ions, owing to the possible formation of charge transfer complexes, have an even stronger effect on the adsorption behavior of organic cations than that observed previously for tetraalkylammonium ions.
Research Organization:
M.V. Lomonosov State Univ., Moscow, USSR
OSTI ID:
6450387
Journal Information:
Sov. Electrochem. (Engl. Transl.); (United States), Journal Name: Sov. Electrochem. (Engl. Transl.); (United States) Vol. 22:8; ISSN SOECA
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400400 -- Electrochemistry
ADSORPTION
ADSORPTION ISOTHERMS
AMINES
AMMONIUM COMPOUNDS
ANIONS
AZINES
BINDING ENERGY
BROMIDES
BROMINE COMPOUNDS
CATALYSTS
CATALYTIC EFFECTS
CATIONS
CHARGED PARTICLES
CHEMICAL REACTION KINETICS
CHLORIDES
CHLORINE COMPOUNDS
COMPARATIVE EVALUATIONS
ELECTROCATALYSTS
ELECTRODES
ELECTRON TRANSFER
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY
FERMIONS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
IODIDES
IODINE COMPOUNDS
IONS
ISOTHERMS
KINETICS
LEPTONS
MERCURY
METALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PERSULFATES
PYRIDINES
PYRIDINIUM COMPOUNDS
QUATERNARY COMPOUNDS
REACTION KINETICS
SORPTION
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SURFACE PROPERTIES
SURFACE TENSION
VALENCE