Low-temperature CO oxidation using a metal organic framework with unsaturated Co2+ sites

Takhyeon Kim, Dae Han Kim, Seungik Kim, Young Dok Kim, Youn-Sang Bae, Chang Yeon Lee

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A series of isostructural metal-organic frameworks (MOFs), i.e.; M-MOF-74 (M = Co2+, Mg2+, and Zn2+), were prepared and tested as gas-phase catalysts for CO oxidation reactions. Maintenance of the porous structure of M-MOF-74 after degassing at high temperature and exposure to air for 24 h enabled a successful gas-phase catalytic study of CO oxidation. Among the M-MOF-74 materials tested, only Co-MOF-74 exhibited catalytic activity because of the unrivalled Lewis acidic character of the coordinatively unsaturated sites (CUSs) in Co-MOF-74. Moreover, the catalytic activity of Co-MOF-74 was superior to that of previously reported MOF-based CO oxidation catalysts in terms of the light-off temperature and specific rate. The high density of CUSs and remarkable porosity of Co-MOF-74 are responsible for the efficient catalytic activity.

Original languageEnglish
Pages (from-to)18-22
Number of pages5
JournalPolyhedron
Volume90
DOIs
Publication statusPublished - 2015 Apr 18

Fingerprint

Carbon Monoxide
Metals
Oxidation
oxidation
metals
Temperature
catalytic activity
Catalyst activity
Gases
vapor phases
catalysts
Catalysts
degassing
Degassing
Density (specific gravity)
maintenance
Porosity
porosity
air
Air

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Kim, Takhyeon ; Kim, Dae Han ; Kim, Seungik ; Kim, Young Dok ; Bae, Youn-Sang ; Lee, Chang Yeon. / Low-temperature CO oxidation using a metal organic framework with unsaturated Co2+ sites. In: Polyhedron. 2015 ; Vol. 90. pp. 18-22.
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Low-temperature CO oxidation using a metal organic framework with unsaturated Co2+ sites. / Kim, Takhyeon; Kim, Dae Han; Kim, Seungik; Kim, Young Dok; Bae, Youn-Sang; Lee, Chang Yeon.

In: Polyhedron, Vol. 90, 18.04.2015, p. 18-22.

Research output: Contribution to journalArticle

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T1 - Low-temperature CO oxidation using a metal organic framework with unsaturated Co2+ sites

AU - Kim, Takhyeon

AU - Kim, Dae Han

AU - Kim, Seungik

AU - Kim, Young Dok

AU - Bae, Youn-Sang

AU - Lee, Chang Yeon

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AB - A series of isostructural metal-organic frameworks (MOFs), i.e.; M-MOF-74 (M = Co2+, Mg2+, and Zn2+), were prepared and tested as gas-phase catalysts for CO oxidation reactions. Maintenance of the porous structure of M-MOF-74 after degassing at high temperature and exposure to air for 24 h enabled a successful gas-phase catalytic study of CO oxidation. Among the M-MOF-74 materials tested, only Co-MOF-74 exhibited catalytic activity because of the unrivalled Lewis acidic character of the coordinatively unsaturated sites (CUSs) in Co-MOF-74. Moreover, the catalytic activity of Co-MOF-74 was superior to that of previously reported MOF-based CO oxidation catalysts in terms of the light-off temperature and specific rate. The high density of CUSs and remarkable porosity of Co-MOF-74 are responsible for the efficient catalytic activity.

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