The electroreduction of CO/sub 2/ in aqueous solutions. reaction orders, and the role of adsorption in the electroreduction process

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Sov. Electrochem. (Engl. Transl.); (United States)

OSTI ID:5116334

Maiorova, N A; Khazova, O A; Mikhailova, A A; Vasil'ev, Y B

It was shown that depending on the electrode metal and potential, values between 0.6 and 1 are found for the reaction order of CO/sub 2/ electroreduction from the dependence of the reduction current on CO/sub 2/ partial pressure (between 1 kPa and 2.5 MPa). The effects of base-electrolyte type and concentration indicate that the slow step of the process involves radical-anions CO/sub 2/ in the first Tafel section and an uncharged species in the second Tafel section. The rates of oxidation and reduction of the radical-anions CO/sub 2/ are reduced when tetrabutylammonium ions are added to the solution.

• Research Organization: Frumkin Institute of electrochemistry, Acad. of Sci., Moscow
• OSTI ID: 5116334
• Journal Information: Sov. Electrochem. (Engl. Transl.); (United States), Journal Name: Sov. Electrochem. (Engl. Transl.); (United States) Vol. 22:1; ISSN SOECA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
400500 -- Photochemistry
ADSORPTION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
CURRENTS
ELECTRIC CURRENTS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ELEMENTS
EMISSION
INDIUM
KINETICS
LEAD
MATERIALS TESTING
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTIAL PRESSURE
PHOTOCHEMISTRY
PHOTOCURRENTS
PHOTOEMISSION
PRESSURE DEPENDENCE
REACTION KINETICS
REDUCTION
SECONDARY EMISSION
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TESTING
TIN