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Appl. Sci. 2012, 2(2), 260-276; doi:10.3390/app2020260
Article

Magnetically Separable Base Catalysts: Heterogeneous Catalysis vs. Quasi-Homogeneous Catalysis

1
 and 2,*
1 Institute of Chemistry, Casali Institute of Applied Chemistry, Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel 2 Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, K1N 6N5, Canada
* Author to whom correspondence should be addressed.
Received: 21 February 2012 / Revised: 12 March 2012 / Accepted: 15 March 2012 / Published: 26 March 2012
(This article belongs to the Special Issue Magnetic Nanoparticles: Synthesis, Properties and Applications)
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Abstract

The synthesis of magnetically separable quasi-homogeneous base catalyst and heterogeneous base catalyst is described. The quasi-homogeneous catalyst is achieved by supporting silane monomers functionalized with different amine groups directly on the surface of magnetite nanoparticles. The heterogeneous catalyst is prepared via a sol-gel process in which silane monomers containing different amine groups are copolymerized with tetraethoxysilane in the presence of magnetite nanoparticles functionalized with ionic liquid moieties. The reactivity of the quasi-homogeneous and the heterogeneous base catalysts is compared in the nitroaldol condensation.
Keywords: magnetic nanoparticles; sol-gel chemistry; heterogeneous catalysis; quasi-homogeneous catalysis; base catalysis magnetic nanoparticles; sol-gel chemistry; heterogeneous catalysis; quasi-homogeneous catalysis; base catalysis
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Abu-Reziq, R.; Alper, H. Magnetically Separable Base Catalysts: Heterogeneous Catalysis vs. Quasi-Homogeneous Catalysis. Appl. Sci. 2012, 2, 260-276.

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