468398 C2H6 Dehydrogenation on Pt-Based Catalysts: Fundamental Mechanistic Studies

Tuesday, November 15, 2016: 3:15 PM
Imperial B (Hilton San Francisco Union Square)
Manos Mavrikakis, Chemical and Biological Engineering, University of Wisconsin - Madison, Madison, WI, Duygu Gerceker, Chemical and Biological Engineering, UW-Madison, Madison, WI, Guowen Peng, Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI and James Dumesic, University of Wisconsin, Madison, WI

Hypersonic aircrafts require substantial cooling of engine and other vehicle components due to the large amount of heat produced during the flight. Using metal-catalyzed endothermic reactions of fuel, such as dehydrogenation and cracking, is a plausible strategy to remove the excess heat produced. However, coke formation on the catalyst causes rapid deactivation and clogging of the system. In this study, a combined experimental and computational chemistry based modeling approach is implemented to investigate stability, activity and selectivity of supported Pt and Pt-alloy catalysts for ethane (a small alkane) dehydrogenation with the goal to minimize coke formation. Experimental reaction kinetics data and DFT derived parameters are combined to develop a mean-field microkinetic model for understanding the reaction mechanism and for helping develop improved alloy catalysts for this reaction.

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See more of this Session: Award Session in Honor of Prof. Jim Dumesic III
See more of this Group/Topical: Catalysis and Reaction Engineering Division