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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 (CC BY 3.0).

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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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