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Communication Dans Un Congrès Année : 2015

Immobilization of a Rh-based Organometallic Catalyst within Metal-Organic Framework

E. A. Quadrelli
X. Wang.
  • Fonction : Auteur
N. Egrishi
  • Fonction : Auteur
M.B. Chambers
  • Fonction : Auteur
C. Mellot-Draznieks

Résumé

The confinement of organometallic catalyst inside the cavity of porous materials was reported to enhance selectivity and activity. Metal-Organic-Framework are new porous and crystalline hybrid organic-inorganic materials which appear to be appealing platforms for immobilization of organometallic catalyst as already reported by our group. The first photosensitization of a rhodium-based catalytic system for CO2 reduction is reported, with formate as the sole carbon-containing product. Through post-synthetic ligand exchange methodology, we successfully proceeded to the heterogenization of this molecular catalyst via the synthesis of a new metal-organic framework (MOF) Cp*Rh@UiO-67. While the catalytic activities of the homogeneous and heterogeneous systems are found to be comparable, the MOF-based system is more stable and more selective for formate. Furthermore it can be recycled without loss of activity. For formate production, an optimal catalyst loading of ~10% molar Rh incorporation is determined. Through the study of the behaviour of MOF systems having a controlled Rh loading, competitive catalytic reaction occurring inside the Cp*Rh@UiO-67 framework are postulated.
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Dates et versions

hal-01155157 , version 1 (26-05-2015)

Identifiants

  • HAL Id : hal-01155157 , version 1

Citer

J. Canivet, J. Bonnefoy, D. Farrusseng, E. A. Quadrelli, X. Wang., et al.. Immobilization of a Rh-based Organometallic Catalyst within Metal-Organic Framework. GECOM 2015 (Groupe d’étude de chimie organométallique & concertation en chimie de coordination), May 2015, Sainte Foy lès Lyon, France. ⟨hal-01155157⟩
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