ELECTROCHEMICAL OXIDATION OF SATURATED HYDROCARBONS.`
Interim technical rept. no. 5, 1 Nov 1965-31 Mar 1966
TYCO LABS INC WALTHAM MA
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The aim of this work was to correlate the activity and stability of Pt-based catalysts for C3H8 electro-oxidation, with their structural properties. There were three distinct aspects to this study 1 preparation of the catalyst, 2 its physical characterization, and 3 measurements of its catalytic activity. Electron microscopic shadowgraphy and selected area electron diffraction, X-ray diffraction, and BET showed that in some preparations all the elementary particles are single crystals, while in others they are polycrystalline. Shadowgraphy also provided valuable information on the structure internal porosity of the agglomerates. Detailed X-ray diffraction studies show that the stored energy from stacking faults and twinning varies substantially for the three Pt-blacks studied. This X-ray method has been completely developed and can now be used routinely. Techniques for preparing reproducible, Teflon-bonded microelectrodes were developed for testing the activity of Pt-black towards C3H8 oxidation. A floating electrode cell for half- cell studies was also assembled. Tests with microelectrodes made from commercial Pt-black showed that the procedures for electrode fabrication and test gave highly reproducible results.
- Physical Chemistry
- Electric Power Production and Distribution