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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 148-149Preparation and Characterization of the Oxime...

Preparation and Characterization of the Oxime Carbapalladacycle Complex Grafted onto Mesoporous SiO₂@Fe₃O₄ Nanocomposite for the Heck Reaction

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Abstract:

The magnetically mesoporous SiO2@Fe3O4 nanocomposites were synthesized by sol-gel method and extracted by ethanol solution. The support was characterized by high resolution transmission electron microscopy (HRTEM), N2 adsorption-desorption isotherms and vibration sample magnetometer (VSM). A long carbon chain Oxime Carbapalladacycle complex was grafted onto this support and the effect of the catalyst was investigated for the Heck reaction of aryl halides with olefins. The results demonstrated that the support with diameter 150 nm was superparamagnetic characteristics (saturation magnetization was 8.78 emu/g) and the thus recycled catalyst could be reused for 6 times with significant loss of activity in the coupling-reaction of iodobenzene and ethyl acrylate. In addition, the catalyst could be simply recycled with the assistance of an external magnet.

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Periodical:

Advanced Materials Research (Volumes 148-149)

Pages:

1100-1107

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.148-149.1100

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Online since:

October 2010

Authors:

Bin Shen, Yong An Wang, Zhi Fei Wang

Keywords:

Heck Reaction, Mesoporous, Oxime Carbapalladacycle, Superparamagnet

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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