Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream

Sung Ho Cho; Jong Soo Park; Seung Hoon Choi; Sung Hyun Kim

doi:10.1016/j.jpowsour.2005.06.019

Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream

Sung Ho Cho, Jong Soo Park, Seung Hoon Choi, Sung Hyun Kim

* Honorary professors

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

36 Citations (Scopus)

Abstract

The effects of magnesium on platinum catalyst used for the preferential oxidation of carbon monoxide for polymer electrolyte membrane fuel cell applications are investigated. The CO conversion and selectivity on Pt-Mg/Al₂O₃ for a H₂-rich stream are 93.1 and 62.0%, respectively, but only 70.2 and 46.89% on Pt/Al₂O₃. The superior activity of Pt-Mg/Al₂O₃ for the preferential oxidation of CO is due to an increase in the hydroxyl groups that results from an increase in basicity with the addition of Mg, as well as to an increase in the electron density on the surface of the Pt catalyst. Moreover, the content of hydroxyl groups on the Pt catalysts is promoted by water vapour.

Original language	English
Pages (from-to)	260-266
Number of pages	7
Journal	Journal of Power Sources
Volume	156
Issue number	2
DOIs	https://doi.org/10.1016/j.jpowsour.2005.06.019
Publication status	Published - 2006 Jun 1

Keywords

Basicity
Carbon monoxide
Fuel cell
Platinum-magnesium catalyst
Preferential oxidation
Water vapour

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2005.06.019

Cite this

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title = "Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream",

abstract = "The effects of magnesium on platinum catalyst used for the preferential oxidation of carbon monoxide for polymer electrolyte membrane fuel cell applications are investigated. The CO conversion and selectivity on Pt-Mg/Al2O3 for a H2-rich stream are 93.1 and 62.0%, respectively, but only 70.2 and 46.89% on Pt/Al2O3. The superior activity of Pt-Mg/Al2O3 for the preferential oxidation of CO is due to an increase in the hydroxyl groups that results from an increase in basicity with the addition of Mg, as well as to an increase in the electron density on the surface of the Pt catalyst. Moreover, the content of hydroxyl groups on the Pt catalysts is promoted by water vapour.",

keywords = "Basicity, Carbon monoxide, Fuel cell, Platinum-magnesium catalyst, Preferential oxidation, Water vapour",

author = "Cho, {Sung Ho} and Park, {Jong Soo} and Choi, {Seung Hoon} and Kim, {Sung Hyun}",

note = "Funding Information: The research was performed for the Carbon Dioxide Reduction and Sequestration R&D Center, one of the 21st Century Frontier R&D Programs funded by the Ministry of Science and Technology of Korea. ",

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doi = "10.1016/j.jpowsour.2005.06.019",

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T1 - Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream

AU - Cho, Sung Ho

AU - Park, Jong Soo

AU - Choi, Seung Hoon

AU - Kim, Sung Hyun

N1 - Funding Information: The research was performed for the Carbon Dioxide Reduction and Sequestration R&D Center, one of the 21st Century Frontier R&D Programs funded by the Ministry of Science and Technology of Korea.

PY - 2006/6/1

Y1 - 2006/6/1

N2 - The effects of magnesium on platinum catalyst used for the preferential oxidation of carbon monoxide for polymer electrolyte membrane fuel cell applications are investigated. The CO conversion and selectivity on Pt-Mg/Al2O3 for a H2-rich stream are 93.1 and 62.0%, respectively, but only 70.2 and 46.89% on Pt/Al2O3. The superior activity of Pt-Mg/Al2O3 for the preferential oxidation of CO is due to an increase in the hydroxyl groups that results from an increase in basicity with the addition of Mg, as well as to an increase in the electron density on the surface of the Pt catalyst. Moreover, the content of hydroxyl groups on the Pt catalysts is promoted by water vapour.

AB - The effects of magnesium on platinum catalyst used for the preferential oxidation of carbon monoxide for polymer electrolyte membrane fuel cell applications are investigated. The CO conversion and selectivity on Pt-Mg/Al2O3 for a H2-rich stream are 93.1 and 62.0%, respectively, but only 70.2 and 46.89% on Pt/Al2O3. The superior activity of Pt-Mg/Al2O3 for the preferential oxidation of CO is due to an increase in the hydroxyl groups that results from an increase in basicity with the addition of Mg, as well as to an increase in the electron density on the surface of the Pt catalyst. Moreover, the content of hydroxyl groups on the Pt catalysts is promoted by water vapour.

KW - Basicity

KW - Carbon monoxide

KW - Fuel cell

KW - Platinum-magnesium catalyst

KW - Preferential oxidation

KW - Water vapour

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U2 - 10.1016/j.jpowsour.2005.06.019

DO - 10.1016/j.jpowsour.2005.06.019

M3 - Article

AN - SCOPUS:33646907388

SN - 0378-7753

VL - 156

SP - 260

EP - 266

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 2

ER -

Effect of magnesium on preferential oxidation of carbon monoxide on platinum catalyst in hydrogen-rich stream

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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