Better Catalysis with Organically Modified Sol-Gel Materials

Better Catalysis with Organically Modified Sol-Gel Materials 

David Avnir, Jochanan Blum, and Zackaria Nairoukh 

The most straightforward method of inducing catalytic activity in sol-gel matrices that are not due to the matrix itself is to entrap within the matrix a catalyst. 

The Sol-Gel Handbook Synthesis, Characterization, and Applications, First Edition. 

The approach is general, and was demonstrated quite widely. For instance, Talhami et al. [5] have physically entrapped dichlorobis(triphenylphosphine)pal-ladium(II) within a silica sol-gel matrix, resulting in efficient catalysts for crosscoupling of aryl iodides, bromides, and triflates with intramolecularly stabilized 

---