In addition to the plenary lectures as well as poster presentations, topical sessions will be organized in parallel.
Advanced Tools for Catalysis
The way we research catalysis has tremendously developed mainly due to the advances in experimental and theoretical tools. From an experimental point of view we see for example the development of spectroscopic and surface science methods, which can now investigate catalytic phenomena down to the single atom and single molecule level, often under conditions very close to those of practical relevance. Detailed investigations of the time domain indicate the dynamics of catalysts, including the restructuring of the active site. Clearly, we are now approaching the era where it will become possible to link the macroscopic world of activity and selectivity with the microscopic world of reactivity, bond breaking & making and local structure. The same trends are also evident for the theoretical methods developed for catalysis research. Fortunately, many recent studies involve the combination of experimental and theoretical tools, for example to provide proper assignments of spectral data. This session highlights the recent efforts in the exciting field of Advanced Tools for Catalysis and discusses the recent developments in the field.
Key words: Experimental and theoretical tools, single atom and single molecule level, spectroscopy, surface science methods, structure of active site, microscopy.
Chaired by Bert Weckhuysen, Suzanne Blum (University of California, Irvine) and Maarten Roeffaers (KU Leuven)
Complexity and Cooperativity in Catalysis
Catalysts and catalytic reactions have for long been studied and applied in a rather ‘isolated’ manner, where a single, well-defined catalyst was used to bring about a single and pre-designed reaction on a single substrate. Obvious reasons for this strategy may have been the discrete (industrial) need to produce a particular chemical or the analytical limitation in handling more complex reaction set-ups and dealing with large data sets. More recently, a keen interest has arisen in catalytic reactions in which a number of different substrates or a number of different catalysts or catalyst components take part. Such systems may be of interest to avoid the isolation of intermediate reaction products in order to speed up multi-step reaction sequences, to fine-tune the acid-base properties of a catalyst, to bring about the activation of ‘inert’ substrates, to increase the chemo-, regio-, and enantio-selectivity of reactions, etc. This session highlights the recent efforts in the exciting field of Cooperative Catalysis and discusses the conceptual development in the field.
Key words: Synergistic effects in catalysis, tandem or cascade catalysis, dual catalysis, non-linear effects in catalysis, systems catalysis, catalysis in complex systems, cooperative catalysis.
Chaired by Bert Klein Gebbink, Bas de Bruin (University of Amsterdam) and Masaya Sawamura (Hokkaido University)
Hybrid Approaches to Catalysis
Heterogeneous catalysts generally are heterogeneous in more ways than one. In addition to the distinction made on the basis of the phase of the catalyst and the reactants, homogeneous and heterogeneous catalysts also differ in the sense that heterogeneous catalysts typically consists of multiple types of active sites, each with their own selectivity and activity. The complex nature of these materials and the multitude of possible active site candidates hamper the elucidation of structure-activity relationships and detailed understanding of a catalytic process at the molecular level. Atomically or molecularly defined catalytic species that are supported on or part of solid surfaces offer the potential of better control over the molecularly-defined elementary steps involved in a catalytic process and as a result hold the promise of rational catalyst design. It is at this interface, i.e. molecularly controlled catalysis on a surface, that homogeneous and heterogeneous catalysis meet. This session aims to cover the many different directions that are taken in this directions, including but not limited to single-site/atom catalysts, bio-inspired solid catalysts, confinement of atoms or ions in well-defined hosts, etc.
Key words: Site-isolated catalysts, molecularly defined supported catalysts, bio-inspired approaches to heterogeneous catalysis, metal-organic and covalent organic frameworks, atomically-defined catalytic surfaces, catalyst self-assembly on surfaces.
Chaired by Pieter Bruijnincx, Kuiling Ding (Chinese Academy of Sciences) and Justin Notestein (Northwestern University)
Reaction and Separation Technology
The development of new catalytic reaction protocols, including alternative reaction media and enhanced separation technologies, has attracted a lot of interest from both an industrial and an academic point of view. In many cases the ideal separation of a precious catalysts for re-use or an environmentally more benign reaction solvent is sought after, while in other cases substrate conversion and selective product formation are optimized through reaction engineering. This session deals with the broader aspects of catalytic engineering and reaction and separation technology. It aims to highlight the intimate interplay between molecular, microscopic and macroscopic engineering for the purpose of catalysis.
Key words: biphasic catalysis, alternative reaction media, (supported) ionic liquids, supercritical CO2, eutectic solvents, thermomorphic solvents, reactor engineering, membrane reactors, multi-scale engineering, magnetic separations.
Chaired by Eelco Vogt (Albemarle), Christopher Hardacre (Queen’s University Belfast) and Walter Leitner (RWTH Aachen)
Covering all contributions that fall within the broad scope of the symposium; covering those subjects not directly addressed by the four topical sessions.
Chaired by Bert Weckhuysen, Bert Klein Gebbink and Pieter Bruijnincx.