The activity of ALD-prepared PtCo catalysts for ethanol oxidation in alkaline media

A. Santasalo-Aarnio; E. Sairanen; R. M. Arán-Ais; M. C. Figueiredo; J. Hua; J. M. Feliu; J. Lehtonen; R. Karinen; T. Kallio

doi:10.1016/j.jcat.2013.08.027

The activity of ALD-prepared PtCo catalysts for ethanol oxidation in alkaline media

A. Santasalo-Aarnio (Corresponding author)
, E. Sairanen
, R. M. Arán-Ais
, M. C. Figueiredo
, J. Hua
, J. M. Feliu
, J. Lehtonen
, R. Karinen
, T. Kallio

Research output: Contribution to journal › Article › Academic › peer-review

28 Citations (Scopus)

1 Downloads (Pure)

Abstract

Controlled bimetallic catalyst materials can be obtained using atomic layer deposition (ALD) method. In this paper, this method was applied to prepare Pt, PtCo, and PtCoPt nanoparticle catalysts on carbon support. Their activity for ethanol oxidation was studied by various electrochemical methods and the dependency of the reaction on temperature and mass transfer was evaluated. In addition, FTIR analysis was performed to confirm the reaction products. The results showed that bimetallic PtCo enhances ethanol oxidation by increasing the amount of CO₂ produced; however, at elevated temperatures, the bimetallic PtCo catalyst lacked stability. Nevertheless, the ALD-prepared PtCoPt catalyst showed similar reaction mechanism as PtCo catalyst, but possess increased stability and superior performance for ethanol oxidation at elevated temperatures.

Original language	English
Pages (from-to)	38-48
Number of pages	11
Journal	Journal of Catalysis
Volume	309
DOIs	https://doi.org/10.1016/j.jcat.2013.08.027
Publication status	Published - 1 Jan 2014
Externally published	Yes

Funding

The authors acknowledge Aalto University and Academy of Finland for funding. Matti Aarnio is acknowledged for providing the images of the cell configuration. Appendix A

Keywords

ALD
Alkaline media
Arrhenius plot
DEFC
Ethanol oxidation
FTIR
PtCo catalyst
Temperature dependency

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10.1016/j.jcat.2013.08.027

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title = "The activity of ALD-prepared PtCo catalysts for ethanol oxidation in alkaline media",

abstract = "Controlled bimetallic catalyst materials can be obtained using atomic layer deposition (ALD) method. In this paper, this method was applied to prepare Pt, PtCo, and PtCoPt nanoparticle catalysts on carbon support. Their activity for ethanol oxidation was studied by various electrochemical methods and the dependency of the reaction on temperature and mass transfer was evaluated. In addition, FTIR analysis was performed to confirm the reaction products. The results showed that bimetallic PtCo enhances ethanol oxidation by increasing the amount of CO2 produced; however, at elevated temperatures, the bimetallic PtCo catalyst lacked stability. Nevertheless, the ALD-prepared PtCoPt catalyst showed similar reaction mechanism as PtCo catalyst, but possess increased stability and superior performance for ethanol oxidation at elevated temperatures.",

keywords = "ALD, Alkaline media, Arrhenius plot, DEFC, Ethanol oxidation, FTIR, PtCo catalyst, Temperature dependency",

author = "A. Santasalo-Aarnio and E. Sairanen and Ar{\'a}n-Ais, \{R. M.\} and Figueiredo, \{M. C.\} and J. Hua and Feliu, \{J. M.\} and J. Lehtonen and R. Karinen and T. Kallio",

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doi = "10.1016/j.jcat.2013.08.027",

language = "English",

volume = "309",

pages = "38--48",

journal = "Journal of Catalysis",

issn = "0021-9517",

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TY - JOUR

T1 - The activity of ALD-prepared PtCo catalysts for ethanol oxidation in alkaline media

AU - Santasalo-Aarnio, A.

AU - Sairanen, E.

AU - Arán-Ais, R. M.

AU - Figueiredo, M. C.

AU - Hua, J.

AU - Feliu, J. M.

AU - Lehtonen, J.

AU - Karinen, R.

AU - Kallio, T.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Controlled bimetallic catalyst materials can be obtained using atomic layer deposition (ALD) method. In this paper, this method was applied to prepare Pt, PtCo, and PtCoPt nanoparticle catalysts on carbon support. Their activity for ethanol oxidation was studied by various electrochemical methods and the dependency of the reaction on temperature and mass transfer was evaluated. In addition, FTIR analysis was performed to confirm the reaction products. The results showed that bimetallic PtCo enhances ethanol oxidation by increasing the amount of CO2 produced; however, at elevated temperatures, the bimetallic PtCo catalyst lacked stability. Nevertheless, the ALD-prepared PtCoPt catalyst showed similar reaction mechanism as PtCo catalyst, but possess increased stability and superior performance for ethanol oxidation at elevated temperatures.

AB - Controlled bimetallic catalyst materials can be obtained using atomic layer deposition (ALD) method. In this paper, this method was applied to prepare Pt, PtCo, and PtCoPt nanoparticle catalysts on carbon support. Their activity for ethanol oxidation was studied by various electrochemical methods and the dependency of the reaction on temperature and mass transfer was evaluated. In addition, FTIR analysis was performed to confirm the reaction products. The results showed that bimetallic PtCo enhances ethanol oxidation by increasing the amount of CO2 produced; however, at elevated temperatures, the bimetallic PtCo catalyst lacked stability. Nevertheless, the ALD-prepared PtCoPt catalyst showed similar reaction mechanism as PtCo catalyst, but possess increased stability and superior performance for ethanol oxidation at elevated temperatures.

KW - ALD

KW - Alkaline media

KW - Arrhenius plot

KW - DEFC

KW - Ethanol oxidation

KW - FTIR

KW - PtCo catalyst

KW - Temperature dependency

UR - https://www.scopus.com/pages/publications/84884689091

U2 - 10.1016/j.jcat.2013.08.027

DO - 10.1016/j.jcat.2013.08.027

M3 - Article

AN - SCOPUS:84884689091

SN - 0021-9517

VL - 309

SP - 38

EP - 48

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -

The activity of ALD-prepared PtCo catalysts for ethanol oxidation in alkaline media

Abstract

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Keywords

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