Accession Number : AD0708412

Title :   THE EFFECT OF ADSORBED LAYERS ON THE ANODIC OXIDATION OF SIMPLE ORGANIC COMPOUNDS. II. ROLE OF ABSORBED 'HCOOH' SPECIES.

Descriptive Note : Interim technical rept. no. 6,

Corporate Author : TYCO LABS INC WALTHAM MASS

Personal Author(s) : Taylor,A. H. ; Pearce,R. D. ; Brummer,S. B.

Report Date : JUL 1970

Pagination or Media Count : 19

Abstract : The anodic oxidation of 0.1M HCOOH on smooth Pt electrodes in 1M H2SO4 at 40C has been examined. An adsorbed material with a high coverage accumulates on the electrode over a wide potential range. The rate of adsorption of this material is not limited by mass transport. A maximum coverage is indicated at +0.30 V, and this falls to zero by 0.65 V (RHE). This material poisons the main HCOOH yields CO2 reaction at all potentials. The main oxidation process at < or = 0.45 V (RHE) proceeds via an adsorbed intermediate which has not been isolated on the surface. Electron transfer is the rate-limiting step. A possible electroactive solution species is suggested. (Author)

Descriptors :   (*FORMIC ACID, *OXIDATION), (*ELECTROCHEMISTRY, FORMIC ACID), (*ELECTRODES, *ADSORPTION), SURFACE PROPERTIES, CARBON DIOXIDE, PLATINUM

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE