Enhanced Catalytic Activity for Hydrogen Electrooxidation and CO Tolerance of Carbon-Supported Non-Stoichiometric Palladium Carbides Full article
| Journal |
Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169 |
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| Output data | Year: 2012, Volume: 353-354, Pages: 204-214 Pages count : 11 DOI: 10.1016/j.molcata.2011.11.026 | ||||
| Tags | Carbon supports, Hydrogen oxidation reaction, Palladium catalysts, PdC solid solutions, Supported nanoparticles | ||||
| Authors |
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| Affiliations |
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Funding (3)
| 1 | Council for Grants of the President of the Russian Federation | МК-380.2011.3 |
| 2 | Council for Grants of the President of the Russian Federation | НШ-3156.2010.3 |
| 3 | Фонд содействия развитию малых форм предприятий в научно-технической сфере | 7389r/10166 |
Abstract:
The promoting effect of incorporation of carbon atoms into the crystalline lattice of palladium on its electrocatalytic performance for the hydrogen oxidation reaction (HOR) and CO tolerance was found, for the first time, with the PdCx/C catalysts prepared via (1) treatment of the pre-deposited Pd particles with C2H4 at 300 °C and (2) successive calcination/reduction of a Pd/C precursor in flowing Ar and H2 at 250 °C. The formation of the interstitial PdCx solutions was confirmed by means of X-ray diffraction, high resolution transition electron microscopy and a set of electrochemical methods. The HOR on the as-prepared and CO-poisoned PdCx/C catalysts was studied using rotating disk electrode. For the catalysts prepared without the use of specially added carbon source (route 2), the correlation between the microstructure of a carbon support and the catalyst activity for the HOR is observed: the structurally more disordered supports give rise to the more active catalysts. The most active PdCx/C catalysts demonstrate up to a 2.5-fold increase in the exchange current density of the HOR and a rise of about 20-fold in the hydrogen oxidation current density in the presence of 1100 ppm CO comparing to the Pd/C catalysts.
Cite:
Simonov A.N.
, Pyrjaev P.A.
, Simonov P.A.
, Moroz B.L.
, Cherepanova S.V.
, Zyuzin D.A.
, Bukhtiyarov V.I.
, Parmon V.N.
Enhanced Catalytic Activity for Hydrogen Electrooxidation and CO Tolerance of Carbon-Supported Non-Stoichiometric Palladium Carbides
Journal of Molecular Catalysis A: Chemical. 2012. V.353-354. P.204-214. DOI: 10.1016/j.molcata.2011.11.026 WOS Scopus РИНЦ ANCAN OpenAlex
Enhanced Catalytic Activity for Hydrogen Electrooxidation and CO Tolerance of Carbon-Supported Non-Stoichiometric Palladium Carbides
Journal of Molecular Catalysis A: Chemical. 2012. V.353-354. P.204-214. DOI: 10.1016/j.molcata.2011.11.026 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jun 29, 2011 |
| Accepted: | Nov 26, 2011 |
| Published online: | Dec 6, 2011 |
| Published print: | Feb 1, 2012 |
Identifiers:
| Web of science: | WOS:000300032700028 |
| Scopus: | 2-s2.0-84855309443 |
| Elibrary: | 17970939 |
| Chemical Abstracts: | 2012:28190 |
| Chemical Abstracts (print): | 156:161414 |
| OpenAlex: | W2052341002 |