A Convergence of Homogeneous and Heterogeneous Catalysis: Immobilized Organometallic Catalysts
In recent years, significant research efforts have focused on combining the best properties of homogeneous (high activity and selectivity) and heterogeneous (ease of separation) catalysts by immobilizing analogs of homogeneous catalysts onto solid supports. Although there are many reports of this type of catalyst, optimized materials are often found empirically, as an understanding of how the immobilization process directly affects catalytic properties is not complete. In this chapter, model systems for examining design criteria as well as catalyst performance are reviewed for a variety of catalysts.
KeywordsAtom Transfer Radical Polymerization Atom Transfer Radical Polymerization Homogeneous Catalyst Polymerization Catalyst Immobilize Catalyst
The authors would like to thank the NSF (CTS-0133209; CTS-0210460; CBET-055354) and the DOE (DE-FG02-03ER15459) for funding. We would also like to acknowledge our collaborators on the palladium work, Dr. Marcus Weck, and Dr. Robert Davis.
- 5.Burkett SL, Sims SD, Mann S (1996) Synthesis of hybrid inorganic-organic mesoporous silica by co-condensation of siloxane and organosiloxane precursors. Chem Commun 1367Google Scholar
- 27.Kato M, Kamigaito M, Sawamoto M, Higashimura T (1995) Polymerization of methyl methacrylate with the carbon tetrachloride/dichlorotris(triphenylphosphine)ruthenium(II)/Methylaluminum bis(2, 6-di-tert-butylphenoxide) initiating system: possibility of living radical polymerization. Macromolecules 28:1721CrossRefGoogle Scholar