tomasr2 at Illinois dot edu
Project Description: Direct synthesis of H2O2 (H2 + O2 → H2O2) is a proposed process for H2O2 synthesis which could dramatically reduce costs to produce H2O2. However, the implementation of direct synthesis requires nanoparticle based catalysts that are both more stable and more selective than materials previously examined. Near atomic dispersion of a primary, reactive metal (e.g, Pd, Pt) on surfaces of nanoparticles formed from a second, ostensibly inactive metal (Au, Ag, Ni, Cu, Zn, etc.) significantly modifies the chemical properties of these reactive component and provide opportunities for unique active sites for H2O2 formation. Using combinations of infrared spectroscopy, isotope exchange experiments, and rates measurements, we aim to correlate the emergent chemical properties of the isolated active sites to apparent kinetic behavior to establish clear understanding of the site requirements for the direct synthesis of H2O2.