20 APR 2016 | SEMINAR
Models for heterogeneous catalysts: an approach at the atomic level
Hans-Joachim Freund, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany
Understanding catalysis, and in particular heterogeneous catalysis, has been based on the investigation of model systems. The enormous success of metal single crystal model surface chemistry, pioneered by physical chemists, is an outstanding example. Increasing the com-plexity of the models towards supported nano particles, resembling a real disperse metal catalyst, allows one to catch in the model some of the important aspects that cannot be covered by single crystals alone. One of the more important aspects is the support particle interface. We have developed strategies to prepare such model systems based on single crystalline oxide films which are used as supports for metal and oxide nano particles, whose geometric structure, morphology, electronic structure, as well as interaction and reaction with molecules from the gas phase may be studied at the atomic level. After a general introduction to model studies in catalysis, results from different research areas are presented: oxide surface termination, 2D-3D-morphology, geometric, and elec-tronic structure of supported metal nano particles in relation to reactivity of CO2 as well as on two-dimensional silicates and alumino-silicates in ordered and vitreous phases.
Personal bio of Hans-Joachim Freund
Hans-Joachim Freund studied physics and chemistry at the University of Cologne where he received his Ph.D. in 1978 and his habilitation in 1983. Between 1979 and 1981, he worked in the Physics Department at the University of Pennsylvania as a postdoctoral fellow. In 1983, he became Associate Professor at Erlangen University and in 1987 Professor at Bochum University, and in 1995, he accepted a position as scientific member and director of the Department of Chemical Physics at the Fritz-Haber-Institut der Max-Planck-Gesellschaft in Berlin. He serves as Honorary Professor at five universities in Germany and UK. He is a regular member of the Chemical Sciences Section of the Academia Europea, the Berlin-Brandenburgische Akademie der Wissenschaften, the Academia Brasileira de Ciencias, the German National Academy of Sciences Leopoldina, and the Chemical section of the Hungarian Academy of Sciences. He is Fellow of the American Physical Society and of several scientific societies.
Hans-Joachim Freund received the Gottfried Wilhelm Leibniz Award of the German Science Foundation (DFG) and the Karl-Ziegler-Award of the German Chemical Society. In 2012, Hajo Freund was awarded the Blaise Pascal Medal in Material Science of the European Academy of Sciences. In 2014, he received the Gaede-Langmuir Award of the American Vacuum Society and is the recipient of the 2015 Michel Boudart for the Advancement of Catalysis, sponsored by the Haldor Topsøe Company and administered by the North American Catalysis Society and the European Federation of Catalysis Societies. He is Centenary Lecturer of the Royal Society of Chemistry, United Kingdom and the recipient of the Gabor A. Somorjai Award of the American Chemical Society. Hajo Freund holds an honorary Doctorate from University Aix Marseille, France.
Hans-Joachim Freund is member of several advisory boards of scientific journals, has published more than 760 scientific papers with more than 40.000 citations and given more than 700 invited talks. He has held a number of named lectureships around the world. Hajo Freund is a founding member of the Scientific Council of the European Research Council. He has educated more than 120 PhD students and collaborated with more than 70 postdoctoral associates.
Date: 20 APR 2016
Prédio Semi-Industrial, Auditório, 2º. andar
Av. Prof. Luciano Gualberto, Trav. 3, Nº 380
Dep. of Chemical Engineering – POLI -USP
05508-900, São Paulo – SP, Brazil
Phone: +55 11 3091-2236 / 3091-2280
Fax: 55 11 3031-3020