Chemistry Department Seminar
""Size control of supported metals for catalysis""
Presented by Xiao Yan Liu, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China), China
Tuesday, October 30, 2018, 11:00 am — Room 300 - 3rd Flr. Chemistry Bldg. 555
Catalysis by supported metals is size sensitive, so the size control is extremely important. Here, I will present two examples for the size control of catalysis. One is the size control of gold catalysts by tuning the metal support interaction. In the last decade, we've developed several methods to control the particle size of gold, for example, adding a second metal to form alloy with gold, using the thiolated gold nanoclusters as the precursor of gold catalysts, and so on. The other example focuses on single-atom catalysis that has emerged as a new frontier in heterogeneous catalysis and shown distinctive performances in a series of oxidation and hydrogenation reactions. The ways we developed to stabilize the single atoms will be introduced. The mechanism for the stabilization of the nanoparticles/single atoms were proposed based on the characterization by aberration-corrected HAADF-STEM, in situ EXAFS and DFT calculations.
Hosted by: Sanjaya Senanayake
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