寿恒讲堂:Nov 6th 15:30-17:00 地点:存中楼 10 楼报告厅 Structure Sensitivity in Heterogeneous Catalysis Prof. Dr. Emiel Hensen Eindhoven University of Technology, The Netherlands Catalysis is the science and technology of the control of the change in the molecular structure of reactants to products (“chemical reaction”) by functional materials (“the catalyst”). Catalysts not only accelerate the chemical reaction, they also determine the direction of chemical transformation on the energy landscape and therefore selectivity. The development of certain overlayers on the surface may lead to catalyst deactivation and thus limit catalyst stability. One of the great challenges to heterogeneous catalysis is to understand the dependence of the activity, selectivity and stability of catalytic reactions on particle size and shape. The nanoscale dimensions of metal particles in catalysts result in a very high reactive surface area. The intriguing aspect of nanoparticle catalysis is that unique behavior appears when they become smaller than 10 nm. In this regime their surface contains a significant fraction of surface atoms with a lower coordination number (corners and edges) than terrace atoms, exhibiting a dramatically different activity and selectivity. On nanoparticles the surface atoms may also form unique topologies, e.g. step-edge sites, which affect catalytic behavior. In the lecture, modern insights about structure sensitivity in heterogeneous catalysis will be highlighted using several case studies on methane steam reforming, the Fischer-Tropsch reaction and carbon monoxide oxidation on ceria-supported metal nanoparticles. The work explores the use of kinetic studies and novel methods to characterize metal nanoparticle surfaces for heterogeneous model systems. Quantum-chemical studies of elementary reaction steps on relevant model surfaces are used to determine kinetic parameters which are used as input for microkinetic simulations to predict macroscopic activity and selectivity. 1 Curriculum Vitae – Prof. dr. Emiel J.M. Hensen Name: Given names: Date of birth: Address: Prof. dr. E.J.M. Hensen Emiel Jan Maria February 5, 1971 Eindhoven University of Technology Department of Chemical Engineering and Chemistry P.O. Box 513, 5600 MB Eindhoven, The Netherlands Contact info: +31 40 2475178 ; e.j.m.hensen@tue.nl; www.catalysis.nl/imc Professional career 2009 – present 2008 – 2009 2006 – 2008 2002 – present 2002 – 2007 2000 – 2001 Professor of Inorganic Materials Chemistry & Head of laboratory; TU/e Associate Professor; Department of Chemical Engineering; TU/e Part-time researcher; Shell Research and Technology Center Amsterdam Part-time lecturer; Katholieke Universiteit Leuven Assistant Professor; Department of Chemical Engineering; TU/e Assistant Professor; Department of Technical Chemistry; University of Amsterdam Academic Training & Education 1995 – 2000 1989 – 1994 PhD; Inorganic Chemistry and Catalysis, Eindhoven University of Technology Bachelor and Master; Chemical Engineering, Eindhoven University of Technology Research Group at TU/e The main theme of the Inorganic Materials Chemistry group is rational catalyst design with a focus on the generation of scientific and technological knowledge in the field of catalyst systems relevant to the development of clean and sustainable processes for the production of fuels and chemicals. The approach is to develop a science basis for the design of heterogeneous catalysts by combining in-situ spectroscopic and kinetic studies augmented by predictive theoretical modeling. Four main topics are covered in the group: (i) Biomass valorization, (ii) Porous materials, (iii) Structure Sensitivity and (iv) Solar Fuels. The current group composition: ca. 50 fte: 1 professor; 1 part-time professor; 2 assistant professor; 6 supporting staff; 11 post-docs; 25 PhD students; 5 guest researchers and 5 master students. Scientific Output and Impact: Number of publications in major peer-reviewed scientific journals: 189 Hirsch index: 32 Book contributions: 9 Patent applications: 2 2 Professional duties Chairman of the Netherlands Organisation for Catalysis Research (NIOK, the nationwide KNAW recognized graduate school on catalysis, since 2011) Member of the Management Team of the Catchbio SmartMix consortium (2010-2013) Member of the Scientific Council of the Biobased Economy West Brabant (since 2010) Member of the China Committee of the Royal Netherlands Academy of Arts and Sciences (KNAW, since 2010) Board Member of the Dutch Zeolite Association (since 2008) Member of the Board of Directors of ERIC (European Research Institute of Catalysis, since 2013) Board Member of the International Acid-Base Catalysis group (since 2013) Guest Editor of several special issues of journals Member of International Scientific Advisory boards of several conference Organizer of several international conferences and summer schools Awards and personal grants TOP research grant of the Netherlands Organization for Scientific Research (2013) VIDI personal grant of the Netherlands Organization for Scientific Research (2008) Casimir personal grant for the exchange of researchers between academia and industry (2006) VENI personal grant of the Netherlands Organization for Scientific Research (2003) Key publications 1. E.J.M. Hensen, E.A. Pidko, N. Rane and R.A. van Santen, Angewandte Chemie International Edition 38 (2007) 7273-7276. 2. E.A. Pidko, V. Degirmenci, R.A. van Santen and E.J.M. Hensen, ‘Glucose activation by transient Cr2+ dimers’, Angewandte Chemie International Edition 49 (2010) 2530-2534. 3. D.A.J.M. Ligthart, R.A. van Santen and E.J.M. Hensen, ‘Supported rhodium oxide nanoparticles as highly active CO oxidation catalysts’, Angewandte Chemie International Edition 50 (2011) 5306-5310. 4. P. Liu, C. Li and E.J.M. Hensen, 'Efficient Tandem Synthesis of Methyl Esters and Imines by Versatile Hydrotalcite-Supported Gold Nanoparticles', Chemistry - A European Journal 18 (2012) 12122-12129. 5. A.J. Markvoort, R.A. van Santen, P.A.J. Hilbers and E.J.M. Hensen, 'Kinetics of the Fischer-Tropsch Reaction ', Angewandte Chemie International Edition 51 (2012) 9015-9019. 3