Methanol Electrooxidation on PtM/C (M = Ni, Co) and Pt/(SnO2/C) Catalysts

We investigate the activity of bimetallic PtM/C (M = Ni, Co) catalysts with different microstructures and platinum catalysts supported on a nanostructured composite carrier (SnO 2 /C) in the electrooxidation reaction of methanol. For bimetallic catalysts, the effect of heat treatment on their struct...

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Bibliographic Details
Published in:Russian journal of electrochemistry 2018-11, Vol.54 (11), p.937-948
Main Authors: Menshchikov, V. S., Belenov, S. V., Guterman, V. E., Novomlinskiy, I. N., Nevel’skaya, A. K., Nikulin, A. Yu
Format: Article
Language:English
Subjects:
Bimetals
Catalysis
Catalysts
Chemistry
Chemistry and Materials Science
Cobalt
Electrochemistry
Heat treating
Heat treatment
Methanol
Nanoparticles
Nickel
Oxidation
Physical Chemistry
Platinum
Solid solutions
Tin dioxide
Weight
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Summary:We investigate the activity of bimetallic PtM/C (M = Ni, Co) catalysts with different microstructures and platinum catalysts supported on a nanostructured composite carrier (SnO 2 /C) in the electrooxidation reaction of methanol. For bimetallic catalysts, the effect of heat treatment on their structural and functional characteristics is also studied. Among bimetallic catalysts in the as-obtained state, the Pt@Ni/C catalyst prepared by the subsequent reduction of nickel and platinum from solutions of their compounds exhibited the highest activity in the methanol electrooxidation, significantly exceeding that for the commercial Pt/C product. Heat treatment at 350°C increased the activity of the PtCo/C catalyst containing nanoparticles of a solid solution but adversely affected the tolerance of all the studied bimetallic catalysts to the intermediate products of methanol oxidation. All the studied Pt/(SnO 2 /C) materials demonstrated a higher mass activity in the electrooxidation reaction of methanol compared to commercial Pt/C and bimetallic systems, while the catalyst with a weight fraction of platinum of 12% and a molar ratio of Pt: SnO 2 of 1: 1.1 showed the highest mass activity.
ISSN:1023-1935
1608-3342
DOI:10.1134/S1023193518130293