Accession Number : AD0709121

Title :   THE EFFECT OF ADSORBED LAYERS ON THE ANODIC OXIDATION OF SIMPLE ORGANIC COMPOUNDS. IV. Ag ADSORPTION ON Pt AND ITS EFFECT ON HCOOH OXIDATION.

Descriptive Note : Interim technical rept. no. 8,

Corporate Author : TYCO LABS INC WALTHAM MASS

Personal Author(s) : Taylor,A. H. ; Kirkland,S. ; Brummer,S. B.

Report Date : JUL 1970

Pagination or Media Count : 19

Abstract : The adsorption of Ag on a smooth Pt electrode in 1M H2SO4 at 40C has been studied from 0.45 to 0.75 V versus RHE in solutions varying from 10 to the -4th to -6th M. The effect of adsorbed Ag on the oxidation rate of HCOOH has been examined at 0.65 and 0.75 V. A diffusion limited adsorption process is indicated. Analysis of the oxidation state of the adsorbed layer suggests, in the one case, a mixed layer composed of Ag singly bonded to a single Pt site with some single bonding to two Pt sites. At the higher coverages, two Ag atoms are apprently attached to a single Pt surface site. The rate of adsorption of Ag(+) is decreased by the presence of HCOOH. (Author)

Descriptors :   (*FORMIC ACID, *OXIDATION), (*ELECTROCHEMISTRY, FORMIC ACID), (*ELECTRODES, *ADSORPTION), SULFURIC ACID, SILVER, DIFFUSION, PLATINUM

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE