II International Symposium on Carbon for Catalysis ABSTRACTS

OP-I-29
Analysis of distribution of platinum nanoparticles on the SKT-6A carbon surface was
done with X-ray microanalysis method. Specific surface of SKT-6A/Pt (10% mas) is equaled
to 745 m 2 /g.
Catalytic properties of platinum fixed in SKT-6A carbon pores were studied in the
following reactions:
(A) H 2 - 2e = 2 H + and (B) 1/2O 2 +2 H + + 2e = H 2 О
The experimental data showed high activity of the Pt - SКТ-6А - PAN electrode in
reaction (A) and low activity in reaction (B). The current value is close to 40 mA/cm 2 in
reaction (A) at 20 о С at platinum content equaled to 0,8-1,0 mg/cm 2 .
The proton exchange with outer surface of Pt - SKT-6A - PAN is performed owing to
contact with particles of solid protonic membrane and sulfuric acid solution. Proton exchange
inside of Pt - SKT-6A - PAN is performed owing to contact with sulfuric acid within carbon
particle.
The calculations show that at room-temperature reaction (A) could be enhanced up to
100-300 mA/cm 2 as a result of optimized reaction conditions, and, consequently, such a
catalyst is promising for hydrogen gas sensors and hydrogen-oxygen fuel cells.
The work was supported with Program of basic research of RAS “Hydrogen Energetics”,
project 2.4 and Foundation for Assistance to Small Innovative Enterprises (FASIE),
project 5809.
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