H2 and CO electrooxidation on well-characterized Pt, Ru, and Pt-Ru. 1. Rotating disk electrode studies of the pure gases including temperature effects

H. A. Gasteiger; N. M. Markovic; P. N. Ross

doi:10.1021/j100020a063

H₂ and CO electrooxidation on well-characterized Pt, Ru, and Pt-Ru. 1. Rotating disk electrode studies of the pure gases including temperature effects

H. A. Gasteiger, N. M. Markovic, P. N. Ross

University of California at Berkeley

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

530 Scopus citations

Abstract

We discuss the electrooxidation of both CO and H₂ on well characterized Pt, Ru, and Pt-Ru rotating disk electrodes in 0.5 M H₂SO₄ at room temperature and at 62°C. We focus on the mechanism and the kinetics of CO oxidation on Ru and Pt-Ru electrodes under well-defined mass transfer conditions, highlighting the expected differences from measurements on the oxidation of preadsorbed monolayers of CO in CO-free electrolyte. Analysis of the catalytic activity displayed by Pt, Ru, and Pt-Ru surfaces for the oxidation of the pure gases, H₂ and CO is used as the basis for understanding the oxidation of H₂/CO mixtures, which will be presented in Part 2. Finally, our previously proposed mechanism for the oxidation of both methanol and formic acid on Pt-Ru electrodes is reassured on the basis of measurements with H₂ and CO.

Original language	English
Pages (from-to)	8290-8301
Number of pages	12
Journal	Journal of Physical Chemistry
Volume	99
Issue number	20
DOIs	https://doi.org/10.1021/j100020a063
State	Published - 1995
Externally published	Yes

Access to Document

10.1021/j100020a063

Cite this

@article{ef420f88bfd64c3e85ac2946e1024d2e,

title = "H2 and CO electrooxidation on well-characterized Pt, Ru, and Pt-Ru. 1. Rotating disk electrode studies of the pure gases including temperature effects",

abstract = "We discuss the electrooxidation of both CO and H2 on well characterized Pt, Ru, and Pt-Ru rotating disk electrodes in 0.5 M H2SO4 at room temperature and at 62°C. We focus on the mechanism and the kinetics of CO oxidation on Ru and Pt-Ru electrodes under well-defined mass transfer conditions, highlighting the expected differences from measurements on the oxidation of preadsorbed monolayers of CO in CO-free electrolyte. Analysis of the catalytic activity displayed by Pt, Ru, and Pt-Ru surfaces for the oxidation of the pure gases, H2 and CO is used as the basis for understanding the oxidation of H2/CO mixtures, which will be presented in Part 2. Finally, our previously proposed mechanism for the oxidation of both methanol and formic acid on Pt-Ru electrodes is reassured on the basis of measurements with H2 and CO.",

author = "Gasteiger, {H. A.} and Markovic, {N. M.} and Ross, {P. N.}",

year = "1995",

doi = "10.1021/j100020a063",

language = "English",

volume = "99",

pages = "8290--8301",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "20",

}

TY - JOUR

T1 - H2 and CO electrooxidation on well-characterized Pt, Ru, and Pt-Ru. 1. Rotating disk electrode studies of the pure gases including temperature effects

AU - Gasteiger, H. A.

AU - Markovic, N. M.

AU - Ross, P. N.

PY - 1995

Y1 - 1995

N2 - We discuss the electrooxidation of both CO and H2 on well characterized Pt, Ru, and Pt-Ru rotating disk electrodes in 0.5 M H2SO4 at room temperature and at 62°C. We focus on the mechanism and the kinetics of CO oxidation on Ru and Pt-Ru electrodes under well-defined mass transfer conditions, highlighting the expected differences from measurements on the oxidation of preadsorbed monolayers of CO in CO-free electrolyte. Analysis of the catalytic activity displayed by Pt, Ru, and Pt-Ru surfaces for the oxidation of the pure gases, H2 and CO is used as the basis for understanding the oxidation of H2/CO mixtures, which will be presented in Part 2. Finally, our previously proposed mechanism for the oxidation of both methanol and formic acid on Pt-Ru electrodes is reassured on the basis of measurements with H2 and CO.

AB - We discuss the electrooxidation of both CO and H2 on well characterized Pt, Ru, and Pt-Ru rotating disk electrodes in 0.5 M H2SO4 at room temperature and at 62°C. We focus on the mechanism and the kinetics of CO oxidation on Ru and Pt-Ru electrodes under well-defined mass transfer conditions, highlighting the expected differences from measurements on the oxidation of preadsorbed monolayers of CO in CO-free electrolyte. Analysis of the catalytic activity displayed by Pt, Ru, and Pt-Ru surfaces for the oxidation of the pure gases, H2 and CO is used as the basis for understanding the oxidation of H2/CO mixtures, which will be presented in Part 2. Finally, our previously proposed mechanism for the oxidation of both methanol and formic acid on Pt-Ru electrodes is reassured on the basis of measurements with H2 and CO.

UR - http://www.scopus.com/inward/record.url?scp=0029307843&partnerID=8YFLogxK

U2 - 10.1021/j100020a063

DO - 10.1021/j100020a063

M3 - Article

AN - SCOPUS:0029307843

SN - 0022-3654

VL - 99

SP - 8290

EP - 8301

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 20

ER -

H₂ and CO electrooxidation on well-characterized Pt, Ru, and Pt-Ru. 1. Rotating disk electrode studies of the pure gases including temperature effects

Abstract

Access to Document

Other files and links

Fingerprint

Cite this