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  Complex Electrooxidation of Formic Acid on Palladium

Mota Lima, A. B., Gonzalez, E. R., & Eiswirth, M. (2014). Complex Electrooxidation of Formic Acid on Palladium. Journal of the Brazilian Chemical Society, 25(7), 1208-1217. doi:10.5935/0103-5053.20140098.

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 Creators:
Mota Lima, Andressa Bastos1, 2, Author              
Gonzalez, Ernesto R.1, Author
Eiswirth, Markus2, Author              
Affiliations:
1Instituto de Química de São Carlos, Universidade de São Paulo, Av. Trab. São-Carlense, 400, 13560-970 São Carlos-SP, Brazil, ou_persistent22              
2Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              

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Free keywords: chemical kinetics, electrochemistry, electrochemical energy conversion, storage
 Abstract: Herein, oscillatory formic acid (FA) electrooxidation on polycrystalline palladium is investigated and compared with the one on polycrystalline platinum; major differences between both are attributed to differences on the kinetics of sub-set chemical network as well as to preferential routes admitted on palladium surface. To presume the kinetic rate of poison accumulation on palladium, FA oxidation was accomplished in presence of occluded hydrogen and hydrogen-free electrodes. The preferential routes were presumed from the temporal pattern. Markedly, oscillations during FA electrooxidation have minimum potential at 0.2 V, which is linked to the fast rate of direct dehydrogenation; moreover, it has one of the largest induction period (ca. 60 min) and oscillatory period (20 min) observed in electrochemistry, since subsurface hydrogen slows down the rate of CO accumulation on the surface.

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Language(s): eng - English
 Dates: 2014-05-062014-07
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.5935/0103-5053.20140098
 Degree: -

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Title: Journal of the Brazilian Chemical Society
  Abbreviation : J. Braz. Chem. Soc.,
Source Genre: Journal
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Publ. Info: Sao Paulo, Brasil : Sociedade Brasileira de Química, SBQ
Pages: - Volume / Issue: 25 (7) Sequence Number: - Start / End Page: 1208 - 1217 Identifier: Other: 1678-4790
CoNE: https://pure.mpg.de/cone/journals/resource/1678-4790