The Investigation of Propane Oxidation Using Electrochemical Mass Spectrometry.

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Abstract:

Elucidation of the mechanism of propane electrooxidation on platinum is complicated by the presence of several partially oxidized carbonaceous adsorbates. In this work techniques of Electrochemical Mass Spectrometry EMS have been developed and applied to simplify analytical characterization of species present at the propane anode. EMS is based on interfacing a non-wetting porous electrode to the inlet system of a mass spectrometer. The preparation of a suitable porous electrode is described. Transport across the gas-liquid interface is characterized using a rotating porous disk. A diffusion model is developed for the porous electrode. Steady state and nonsteady state collection phenomena are investigated. A novel technique for the determination of diffusion coefficients is presented. Labelled carbon studies were carried out using propane-2-13C. Observations on the open circuit behavior of the propane anode are included.

Author(s):
Comeau, Joseph K. ; Smythe, R. J. ; Bruckenstein, Stanley
Author Organization(s):
STATE UNIV OF NEW YORK BUFFALO DEPT OF CHEMISTRY
Descriptive Note:
Semiannual rept. no. 6, Jan-Jun 74,
Supplementary Note:
See also report dated Dec 73, AD/A-006 550.
Pagination:
0263

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DAAK02-71-C-0306
Project Number(s):
DA-1-T-061102-A-34-A
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*ADSORPTION, *PROPANE, STEADY STATE, INTERFACES, EXPERIMENTAL DESIGN, ELECTROCHEMISTRY, MASS SPECTROSCOPY, TRANSPORT PROPERTIES, OXIDATION, ELECTRODES, PLATINUM, SURFACE CHEMISTRY, DIFFUSION, DESORPTION
Field(s)/Group(s):
Atomic and Molecular Physics and Spectroscopy
Keyword(s):
*Electrochemical mass spectroscopy, *Porous electrodes, *Electrooxidation, Chemical reaction mechanisms
Report Date:
1973 Dec 01