How bimetallic electrocatalysts does work for reactions involved in fuel cells? Example of ethanol oxidation and comparison to methanol (Record no. 41991)

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control field 20250625124705.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-7667
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245 10 - TITLE STATEMENT
Title How bimetallic electrocatalysts does work for reactions involved in fuel cells? Example of ethanol oxidation and comparison to methanol
490 0# - SERIES STATEMENT
Volume/sequential designation Electrochimica Acta, 52(25-26), p.5118-5125, 2005
520 3# - SUMMARY, ETC.
Summary, etc. Carbon-supported Pt-based nanosized electrocatalysts can be synthesized for methanol and ethanol electrooxidation. The electrocatalytic activity of Pt can be greatly enhanced by using Pt-Ru/C for methanol oxidation or Pt-Sn/C for ethanol oxidation. In situ IR reflectance spectroscopy is a convenient tool to better understand the importance of the different adsorption steps involved in the mechanisms of electrooxidation.With Pt/C, it appears clearly that linearly adsorbedCOis the poisoning species formed during methanol and ethanol oxidation. In the case of methanol, even with Pt-Ru/C (the most active catalyst), adsorbed CO is also a reactive intermediate. The enhancement of activity observed in such a case is due to the possibility to activate water at lower potentials in the presence of Ru.With Pt-Sn/C, the mechanism of the electrooxidation of ethanol is strongly modified. If at low potentials, poisoning with adsorbed CO still exists (as with Pt/C), the oxidation of ethanol at potentials greater than 0.4V versus RHE occurs through an adsorbed acetyl species which can lead to the formation of acetaldehyde and acetic acid as final products in addition to carbon dioxide.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element DIRECT ALCOHOL FUEL CELL
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ELECTROOXIDATION
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ETHANOL
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element METHANOL
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element IR REFLECTANCE SPECTROSCOPY
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MECHANISMS
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Léger, J.M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Rousseau, S.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Coutanceau, C.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Hahn, F.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Lamy, C.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/15Jcq-zivQOUgOoUIYomijMM-S1qvZg9z/view?usp=drivesdk">https://drive.google.com/file/d/15Jcq-zivQOUgOoUIYomijMM-S1qvZg9z/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-7667 25.06.2025 25.06.2025 Documentos solicitados