简介: |
讲演者简介：
Prof. Dr. Christof Schulz studied Chemistry at the University of Karlsruhe from 1988–94. He received his PhD at the Physical Chemistry Institute at the University of Heidelberg in 1997 with a thesis on the “Development and application of a laser-induced fluorescence method for the quantitative measurement of nitric oxide in internal combustion engines”. From 1997–2004 he headed the group on “Laser diagnostics in combustion processes” in the same institute where he also received his Habilitation in 2002. During this time he spent several subsequent research periods at Stanford University, from 2000–02 as Visiting Scholar and from 2002–04 as Consulting Associate Professor. In 2004 he assumed the Chair for Combustion and Gas Dynamics at the University of Duisburg-Essen where he currently leads a group of 45 scientists.
In 2014, Christof Schulz received the Leibniz Prize of the German Research Foundation, DFG. In 1999 he received the Freudenberg Award of the Heidelberg Academy of Sciences and the 1. Prize of the BMW Scientific Award. He is editor-in-chief of the journal Progress in Energy and Combustion Science, co-editor of Applied Physics B and Proceedings of the Combustion Institute and member of the editorial board of Powder Technology. From 2007–10 he was deputy director and 2010–15 director of the Center for NanoIntegration Duisburg-Essen (CENIDE). Since 2009 he is also the director of the NanoEnergyTechnologyCenter (NETZ) in Duisburg. Since 2007 he is member of the board of the German Section of the Combustion Institute and since 2012 he is member of the board of the international Combustion Institute.
报告摘要：
Gas-phase synthesis of nanoparticles allows to generate high purity materials with well-controlled properties in continuous flow situations that provide a chance for scale-up to industrial scale. Nanoparticles with well-controlled composition and narrow size distributions are of interest for a wide variety of applications from coatings to electronics to functional materials, e.g., for energy conversion and storage. For the synthesis of materials with desired properties, however, the reaction conditions must be well controlled and the underlying processes understood. The decomposition kinetics of vaporized metal organic compounds, the ignition properties of the mixture of these materials with oxidizing environments as well as the reaction mechanisms of the decomposition, cluster formation and the potential interaction with flame chemistry is a prerequisite for a targeted synthesis of materials. Kinetics experiments are carried out in shock tube reactors with optical and mass spectrometric detection of intermediate and product species, and in flow reactors with laser-based detection of temperature and species concentration. At the same time, reaction conditions such as temperature, intermediate species concentration and particle size must be determined in situ in lab-scale nanoparticle reactors as well as in pilot-plant-scale reactors to provide input and validation data for numerical simulation. In this presentation these aspects will be introduced based chemical kinetics measurements in shock tubes and the investigation of particle formation and growth in flow reactors using molecular-beam sampling and laser based measurements of temperature and intermediate species concentrations. |
