Synthesis of Nanostructured Materials for Catalytic Applications

Subject Areas Active Sites and Frameworks Topologies –Particle Shape –2D Particle Arrays –2D Pocket Arrays –Uniform Organized Channels Methodologies –Wet –Dry –Self-Assembly

Subject Areas cont’d Goals –Models of natural aerosols –Ultra-uniform active sites –Novel chemistry –Molecular Flow Control –Coke Resistant Solid Acids –Immobilized Enzymes & Homogeneous Catalysts –Amenable to High Throughput Discovery

Goals for Catalysts  Ultra-uniform  Highly active  Control reagent contact time  Separate reactants and products  Resist deactivation by sintering  Resist deactivation by fouling

Framework Topologies b a 3D Porous

Framework Topologies 2D Porous Reactors 2D Planar Platelets or Sheets

2D Porous Topology Ultra-Uniform Volume Pores –Ultra-Uniform Active Phases –Uniform Contact Time One Active Particle in Each Pore –No Secondary Reactions Sequenced Active Sites in Each Pore –Sequenced Reactions Sequestered Active Sites –No Sintering Tailored Pore Walls –Molecular Flow Control

2D Planar Topology No Pores  No Pore Plugging –Solid Acids? Immobilize Large Active Structures –Enzymes –Homogeneous Catalysts Macroscopic Area Samples for Surface Science

Methods of Synthesis Wet - Porous –Colloids, Sol-gel, Templates, Liquid-Crystal, Bottoms- up Supramolecular, Genetic Engineering Dry - Planar –PVD, MBE, CVD, ALE, ALD, PLD, Plasma –Patterning Self-Assembly –Templates, Anodization, Dendrimers, Bio-assembly