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- W1972804329 abstract "Abstract The electrochemical oxidation reactions of α-, β- and γ-aminobutyric acid at a Pt electrode were investigated in aqueous solutions at pH 1 and pH 13 using steady-state current-potential measurements, cyclic voltammetry and open-circuit potential decay. The capacitance behaviour and the high Tafel slopes suggest the production of free radicals at the surface of the electrode accompanied by a second reaction involving loss of CO2 which is the rate-determining step. The adsorbed intermediate species is either hydrolysed anodically to propionaldehyde or produces the aldehyde by the formation of a carbonium ion which is subsequently hydrolysed in solution. The mechanisms are compared with those observed in our earlier investigations of the electrochemical oxidation reactions of glycine and α- and β-alanine. Formation of propionaldehyde and other aldehyde products was confirmed by polarographic measurements, and no dimerized products were detected by gas chromatography. This behaviour differs from the dimerization process typical of the radical reactions associated with the Kolbe mechanism." @default.
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- W1972804329 date "1992-10-01" @default.
- W1972804329 modified "2023-09-27" @default.
- W1972804329 title "A comparative study of the surface electrochemical oxidation reactions of α-, β-, and γ-aminobutyric acid at platinum" @default.
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- W1972804329 doi "https://doi.org/10.1016/0022-0728(92)85100-h" @default.
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