ISSN:
1040-0397
Keywords:
Ammonia
;
Amines
;
Voltammetry
;
Ruthenium/titanium oxide electrode
;
Simulation
;
Electrooxidation
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Electrooxidation of ammonia at the Ti/TiO2/RuO2 electrode was investigated using voltammetry, coulometry, 14N NMR, potentiometry with a nitrate ISE, and numerical simulation. The major product of electrooxidation was elementary nitrogen. Nitrate was a minor product. NH4 is not electroactive at the oxide electrode. Since protons are formed in the course of the electrode reaction, incoming ammonia is transformed to NH4, and therefore the flux of ammonia to the electrode surface is strongly depressed in solutions containing no excess of hydroxide ion. Amines were electrooxidized to a variety of compounds. Both ammonia and amines strongly adsorb on the electrode surface. Height of the anodic voltammetric peaks of both ammonia and simple amines was found to be linearly dependent on substrate concentration in a wide millimolar range.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/elan.1140091004
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