chapter  9
28 Pages

Synthesis of Supported Metal Catalysts by Dendrimer-Metal Precursors

WithD. Samuel Deutsch, Christopher T. Williams, Michael D. Amiridis

Nanocomposites ........................................................................................... 213 9.2.1 Synthesis of Monometallic Dendrimer-Metal Nanocomposites ..... 214 9.2.2 Synthesis of Bimetallic Dendrimer-Metal Nanocomposites ........... 220

9.3 Deposition of Dendrimer-Metal Nanocomposites onto High Surface Area Supports............................................................................................... 223

9.4 Removal of PAMAM Dendrimers from Supported Dendrimer-Metal Nanocomposites ........................................................................................... 224

9.5 Conclusion.................................................................................................... 230 References.............................................................................................................. 231

Starburst dendrimers have received considerable attention in the area of heterogeneous catalyst synthesis in the last decade. Although Tomalia et al. and Bosman et al.1, 2 originally discovered these hyperbranched macromolecules and their hostguest properties in the mid-1980s, Crooks and coworkers were the first to demonstrate the ability of poly(amidoamine) (PAMAM) starburst dendrimers to act as metal nanoparticle stabilizers that could potentially aid in the synthesis of supported metal catalysts.3 The benchmark work of Crooks et al. and subsequent literature reports have underscored the advantages of successfully utilizing PAMAM dendrimernanocomposite precursors over conventional catalyst preparation methods.