Journal of Materials Science

, Volume 50, Issue 7, pp 2747–2758 | Cite as

Catalysis with solid lipid particles

Original Paper


We describe the preparation of catalytic solid lipid particles as a new heterogeneous catalytic system. This system was constructed by incorporating polyethyleneimine modified with oleic acid (PEI-C18) within solid lipid particles (SLPs) coated with a silica shell. The hot sonication technique was employed to emulsify the oil phase containing paraffin wax, PEI-C18, and tetraethyl orthosilicate (TEOS) in aqueous surfactant solution generating oil-in-water emulsion, followed by interfacial polymerization of TEOS in basic medium producing silica shell via the sol–gel route. The reactivity of catalyst PEI-C18 encapsulated within SLPs@SiO2 was tested in Knoevenagel condensation as a model reaction. This new catalyst showed high catalytic efficiency in the condensation of aromatic aldehydes with various active hydrogen compounds forming α,β-unsaturated compounds, while triple distilled water was utilized as a reaction medium. The catalyst was easily isolated from the reaction mixture using centrifuge technique and recycled over 5 times without any significant loss in its catalytic activity.


Fumed Silica Malononitrile Silica Shell Solid Lipid Polyethyleneimine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Supplementary material

10853_2015_8830_MOESM1_ESM.docx (1.1 mb)
Supplementary material 1 (DOCX 1126 kb)


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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Institute of Chemistry, Casali Center of Applied Chemistry and Center for Nanoscience and NanotechnologyThe Hebrew University of JerusalemJerusalemIsrael

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