417937 Supported Bimetallic Nanoparticles for Selective Hydrogenolysis and Water-Gas Shift Reactions

Monday, November 9, 2015: 8:30 AM
355A (Salt Palace Convention Center)
James Dumesic1, Canan Sener1, Thejas Wesley1, Ana Alba-Rubio2, Sikander H. Hakim1, Brandon O'Neill2, Fabio H. Ribeiro3 and Jeffrey T. Miller4, (1)Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, (2)Chemical and Biological Engineering, University of Wisconsin, Madison, WI, (3)School of Chemical Engineering, Purdue University, West Lafayette, IN, (4)Chemical Science and Engineering Division, Argonne National Laboratory, Lemont, IL

Elucidation of active sites in supported bimetallic catalysts is complicated by the high level of dispersity in the nanoparticle size and composition that is inherent in conventional methods of catalyst preparation. We present a synthesis strategy that leads to highly dispersed, bimetallic nanoparticles with uniform particle size and composition by means of controlled surface reactions. We demonstrate the synthesis of three systems, RhMo, PtMo and RhRe, consisting of a highly reducible metal with an oxophilic promoter. These catalysts are characterized by FTIR, CO chemisorption, STEM/EDS, TPR and XAS analysis. The catalytic properties of these bimetallic nanoparticles were probed for the selective CO hydrogenolysis of (hydroxymethyl)tetrahydropyran to produce 1,6 hexanediol. We have also used controlled surface reactions to study the promotion of Pt/C catalysts for water-gas shift by deposition of Mo, Ce, and Ti species onto the surface of the Pt nanoparticles.

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See more of this Session: In Honor of the 2014 Wilhelm Award Winner I
See more of this Group/Topical: Catalysis and Reaction Engineering Division