Accession Number : AD0746258

Title :   Catalysis of Hydrocarbon Oxidation with Adsorbed Layers.

Descriptive Note : Semiannual rept. no. 3,

Corporate Author : TYCO LABS INC WALTHAM MASS

Personal Author(s) : Brummer,S. B. ; Turner,M. J. ; Kirkland,S. D.

Report Date : JUN 1972

Pagination or Media Count : 41

Abstract : The oxidation of C3H8 at platinized Pt electrodes in H3PO4 containing Ni(2+), Na(+), or Zn(2+) was studied in half cells at 130C. In concentrated (>90%) H3PO4 there are long term performance decays for the oxidation of C3H8 which cannot be reversed by anodic or cathodic treatment of the electrode, but which can be reversed by cleaning the electrode in Na2CO3 solutions. Even with a clean electrode, the initial hydrocarbon oxidation rate is substantially lower in 95% acid than in 80% acid. In both 95% and 80% H3PO4, addition of Ni(2+) causes a maximum catalytic effect of about 100%. The magnitude of the catalytic effect is significantly affected by whether or not the previously mentioned Na2CO3 pretreatment is used. Na(+) or Zn(+2) had no apparent effect.

Descriptors :   (*HYDROCARBONS, *ELECTROCHEMISTRY), (*PROPANE, *OXIDATION), (*CATALYSTS, *FUEL CELLS), (*NICKEL, CATALYSTS), ELECTRODES, ELECTROLYTES, PHOSPHORIC ACIDS, CARBONATES, ADDITIVES, ZINC, SODIUM

Subject Categories : Physical Chemistry
      Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE