THE EFFECT OF ADSORBED LAYERS ON THE ANODIC OXIDATION OF SIMPLE ORGANIC COMPOUNDS. 1. TIME VARIATIONS DURING THE OXIDATION OF HCOOH AND THE EFFECT OF ADDED Cl(-).
Abstract
The deterioration of currents with time (time effects) during the oxidation of 0.1M HCOOH on Pt electrodes in 1M H2SO4 at 40C has been examined. The effect of added Cl(-) on the HCOOH oxidation rate at 0.65 and 0.75 V (versus RHE) has been studied. HCOOH oxidation currents have been measured at 0.75 V (versus RHE) as a function of HCOOH purity. The current decays with time; results indicate that this decay is, to a large extent, due to an anionic type impurity in the solution. This impurity is present at very low levels and the behavior is similar to that with a solution containing 5 x 10 to the -7th M Cl(-). Results are reported for HCOOH oxidation at 0.65 and 0.75 V (versus RHE) as a function of Cl(-) concentration. The reaction is extensively inhibited by increased addition of Cl(-) as a direct consequence of Cl(-) adsorption on the electrode. These observations imply that the electroactive species in HCOOH oxidation at these potentials is HCOO(-). (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1969
- Accession Number
- AD0698311
Entities
People
- A. H. Taylor
- R. D. Pearce
- S. B. Brummer