Highly active, durable and recyclable ordered mesoporous magnetic organometallic catalysts for promoting organic reactions in water

Fang Zhang; Mingzhen Chen; Xiaotao Wu; Wei Wang; Hexing Li

doi:10.1039/c3ta13446f

Highly active, durable and recyclable ordered mesoporous magnetic organometallic catalysts for promoting organic reactions in water

Fang Zhang, Mingzhen Chen, Xiaotao Wu, Wei Wang, Hexing Li

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

32 Scopus citations

Abstract

A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe₃O₄ microspheres with strong magnetism, denoted as M-PPh₂-MCM-41@SiO₂@Fe₃O₄, where M = Pd(ii) and Rh(i), has been developed for the immobilization of homogeneous catalysts. In comparison with the traditional M-PPh₂-MCM-41 catalysts with irregular shapes and the M-PPh₂-SiO₂@Fe ₃O₄ without an ordered mesoporous structure, the current catalysts exhibited much higher activities for various water-based Suzuki, Sonogashira and Miyaura-Michael organic reactions, due to the high dispersion of active sites and the uniform catalyst particles with short-ordered mesopores favoring reactant diffusion and adsorption. Their catalytic efficiencies are comparable with those of the homogeneous catalysts, and they could be easily recycled for reuse by simply applying an external magnet.

Original language	English (US)
Pages (from-to)	484-491
Number of pages	8
Journal	Journal of Materials Chemistry A
Volume	2
Issue number	2
DOIs	https://doi.org/10.1039/c3ta13446f
State	Published - Jan 14 2014
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

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10.1039/c3ta13446f

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abstract = "A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe3O4 microspheres with strong magnetism, denoted as M-PPh2-MCM-41@SiO2@Fe3O4, where M = Pd(ii) and Rh(i), has been developed for the immobilization of homogeneous catalysts. In comparison with the traditional M-PPh2-MCM-41 catalysts with irregular shapes and the M-PPh2-SiO2@Fe 3O4 without an ordered mesoporous structure, the current catalysts exhibited much higher activities for various water-based Suzuki, Sonogashira and Miyaura-Michael organic reactions, due to the high dispersion of active sites and the uniform catalyst particles with short-ordered mesopores favoring reactant diffusion and adsorption. Their catalytic efficiencies are comparable with those of the homogeneous catalysts, and they could be easily recycled for reuse by simply applying an external magnet.",

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T1 - Highly active, durable and recyclable ordered mesoporous magnetic organometallic catalysts for promoting organic reactions in water

AU - Zhang, Fang

AU - Chen, Mingzhen

AU - Wu, Xiaotao

AU - Wang, Wei

AU - Li, Hexing

PY - 2014/1/14

Y1 - 2014/1/14

N2 - A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe3O4 microspheres with strong magnetism, denoted as M-PPh2-MCM-41@SiO2@Fe3O4, where M = Pd(ii) and Rh(i), has been developed for the immobilization of homogeneous catalysts. In comparison with the traditional M-PPh2-MCM-41 catalysts with irregular shapes and the M-PPh2-SiO2@Fe 3O4 without an ordered mesoporous structure, the current catalysts exhibited much higher activities for various water-based Suzuki, Sonogashira and Miyaura-Michael organic reactions, due to the high dispersion of active sites and the uniform catalyst particles with short-ordered mesopores favoring reactant diffusion and adsorption. Their catalytic efficiencies are comparable with those of the homogeneous catalysts, and they could be easily recycled for reuse by simply applying an external magnet.

AB - A new strategy of bonding organometallics to an MCM-41 thin layer coated onto Fe3O4 microspheres with strong magnetism, denoted as M-PPh2-MCM-41@SiO2@Fe3O4, where M = Pd(ii) and Rh(i), has been developed for the immobilization of homogeneous catalysts. In comparison with the traditional M-PPh2-MCM-41 catalysts with irregular shapes and the M-PPh2-SiO2@Fe 3O4 without an ordered mesoporous structure, the current catalysts exhibited much higher activities for various water-based Suzuki, Sonogashira and Miyaura-Michael organic reactions, due to the high dispersion of active sites and the uniform catalyst particles with short-ordered mesopores favoring reactant diffusion and adsorption. Their catalytic efficiencies are comparable with those of the homogeneous catalysts, and they could be easily recycled for reuse by simply applying an external magnet.

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Highly active, durable and recyclable ordered mesoporous magnetic organometallic catalysts for promoting organic reactions in water

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