| AVS 63rd International Symposium & Exhibition | |
| Surface Science | Thursday Sessions |
| Session SS+AS-ThA |
| Session: | Celebrating a Life in Surface Science: A Symposium in Honor of JOHN T. YATES, JR. |
| Presenter: | Ib Chorkendorff, Technical University of Denmark |
| Correspondent: | Click to Email |
In this presentation I will give a brief overview of how my post-doc with John T. Yates Jr. influenced my way of working and how that philosophy could be used too go from fundamental investigations of reactions on surfaces to actually understand and make new heterogeneous catalysts. First we shall discuss how mass-selected nanoparticles of CuZn alloys to elucidate the dynamics of the methanol synthesis catalysts. The produced nanoparticles will be compared to the conventional CuZnAl at 1 bar for synthesizing methanol from CO2 and H2 [1, 2, 3]. The methanol synthesis on CuZn will also be discussed with respect to our very recent findings of using alloys of NiGa for methanol synthesis [4]. The use of mass-selected nanoparticles will be further demonstrated for electrochemical Oxygen Reduction Reaction, which is really the limiting reaction in Proton Exchange Membrane Fuel Cells. Here we have found entirely new classes of electro-catalysts by alloying Pt with early transition metals [5] or the lanthanides [6]. We have also shown that it is possible to make mass-selected nanoparticles of these alloys with very good activities [7] and PtGd alloys [8].
References1. S. Kuld, C. Conradsen, P.G. Moses, I. Chorkendorff and J. Sehested, Angew. Chemie 53 (2014) 1.
2. C. Holse, C. F. Elkjær A. Nierhoff, J. Sehested, I. Chorkendorff, S. Helveg, J. H. Nielsen, J. Chem. Phys. 119 (2015) 2804-2812.
3. S. Kuld, M. Thorhauge, H. Falsig, C. Elkjær, S. Helveg, I. Chorkendorff, J. Sehested, Accepted SCIENCE (2016).
4. F. Studt, F. Abild-Pedersen, I. Sharafutdinov, C. F. Elkær, J. S. Hummelshøj, S. Dahl, I. Chorkendorff, and J. K. Nørskov, Nature Chemistry. 6 (2014) 320.
5. J. Greeley, I.E.L. Stephens, A.S. Bondarenko, T. P. Johansson, H. A. Hansen, T. F. Jaramillo, J. Rossmeisl, I. Chorkendorff, J. K. Nørskov, , Nature Chem. 1 (2009) 522.
6. M. Escudero-Escribano, P. Malacrida, M- Hansen, U. G. Vej-Hansen, A. Velázquez-Palenzuela V. Tripkovic, J. Schøitz, J. Rossmeisl, I. E.L. Stephens, I. Chorkendorff, SCIENCE 352 (2016) 73-76.
7. P. Hernandez-Fernandez, F. Masini, D. N. McCarthy, C. E. Strebel, D. Friebel, D. Deiana, P. Malacrida, A. Nierhoff, A. Bodin, A. M. Wise, J. H. Nielsen, T. W. Hansen, A. Nilsson, I. E.L. Stephens, I. Chorkendorff, Nature Chemistry 6 (2014) 732-8.
8. A. Velázquez-Palenzuela, F. Masini, A. F. Pedersen, M. Escudero-Escribano, D. Deiana, P. Malacrida, T. W. Hansen, D. Friebel, A. Nilsson, I. E.L. Stephens, I. Chorkendorff, J. Catal. 328 (2015) 297-307.