341933 Design of Selective Propylene Epoxidation Catalysts: Heterogeneous Catalysts On Optically Excited Plasmonic Metal Nanostructures

Sunday, November 3, 2013: 4:15 PM
Continental 7 (Hilton)
Marimuthu Andiappan and Suljo Linic, Department of Chemical Engineering, University of Michigan, Ann Arbor, MI

Propylene oxide (PO) is an extremely valuable commodity chemical that is commercially produced using expensive and environmentally harmful routes.  The development of an environmentally friendly and selective direct heterogeneous propylene epoxidation process, which uses O2 as the oxidizing reagent, represents a critical challenge for the field of heterogeneous catalysis. In this contribution, we demonstrate that optically excited plasmonic copper catalysts can achieve significantly higher selectivity in the direct epoxidation (using O2 as an oxidant) of propylene to form PO compared to other conventional heterogeneous catalysts. We will discuss the molecular mechanisms that govern this photocatalytic process and its implications on the family of partial oxidation reactions on coinage metals.
  1. M. Andiappan, J. Zhang, S. Linic, Tuning selectivity in propylene epoxidation by plasmon mediated photo-switching of Cu oxidization state, Science, 339, 1590, 2013.
  2. Suljo Linic, Phillip Christopher and David B. Plasmonic-metal nanostructures for efficient conversion of solar to chemical energy, Nature Materials, in press.
  3. Ingram P. Christopher, H. Xin, S. Linic, Visible light enhanced catalytic oxidation reactions on plasmonic silver nanostructures, Nature Chemistry, 3, 467, 2011.

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See more of this Session: Rational Catalyst Design
See more of this Group/Topical: Catalysis and Reaction Engineering Division