Catalysis with Supported Size-selected Pt Clusters

Catalysis with Supported Size-selected Pt Clusters

Author: Florian Frank Schweinberger

Publisher: Springer Science & Business Media

Published: 2013-11-01

Total Pages: 231

ISBN-13: 3319014994

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In his thesis, Florian Schweinberger investigates the influence of the precise size of catalytically active species on reactivity. In order to do this he carries out studies both in UHV and under ambient conditions for supported, size-selected Platium clusters (8-68 atoms). Schweinberger probed the electronic structure, adsorption properties and reactivity of two olefins on surfaces and Pt clusters in the submonolayer range. With adsorbed trichloroethene (TCE) a possible cluster-adsorbate induced change in the electronic structure, and for ethene a low-temperature, size-dependent self-/hydrogenation was observed.In a collaborative approach, Schweinberger and colleagues investigated Pt clusters under ambient pressure conditions. They characterised the clusters at at the local and integral level and tested for temperature stability. Experiments in gas phase ?-reactors and in liquid, as part of a hybrid photocatalytic system, revealed size-dependent reactivity.Overall this thesis is not only of interest for those who want to perform similar experiments but also provides superb scientific insights for researchers in the field.


Atomically Precise Metal Nanoclusters

Atomically Precise Metal Nanoclusters

Author: Zhikun Wu

Publisher: Morgan & Claypool Publishers

Published: 2020-11-06

Total Pages: 141

ISBN-13: 1636390250

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Atomically precise metal nanocluster research has emerged as a new frontier. This book serves as an introduction to metal nanoclusters protected by ligands. The authors have summarized the synthesis principles and methods, the characterization methods and new physicochemical properties, and some potential applications. By pursuing atomic precision, such nanocluster materials provide unprecedented opportunities for establishing precise relationships between the atomic-level structures and the properties. The book should be accessible to senior undergraduate and graduate students, researchers in various fields (e.g., chemistry, physics, materials, biomedicine, and engineering), R&D scientists, and science policy makers.


Encyclopedia of Interfacial Chemistry

Encyclopedia of Interfacial Chemistry

Author:

Publisher: Elsevier

Published: 2018-03-29

Total Pages: 5276

ISBN-13: 0128098945

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Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry, Seven Volume Set summarizes current, fundamental knowledge of interfacial chemistry, bringing readers the latest developments in the field. As the chemical and physical properties and processes at solid and liquid interfaces are the scientific basis of so many technologies which enhance our lives and create new opportunities, its important to highlight how these technologies enable the design and optimization of functional materials for heterogeneous and electro-catalysts in food production, pollution control, energy conversion and storage, medical applications requiring biocompatibility, drug delivery, and more. This book provides an interdisciplinary view that lies at the intersection of these fields. Presents fundamental knowledge of interfacial chemistry, surface science and electrochemistry and provides cutting-edge research from academics and practitioners across various fields and global regions


Heterogeneous Catalysts

Heterogeneous Catalysts

Author: Wey Yang Teoh

Publisher: John Wiley & Sons

Published: 2021-02-23

Total Pages: 768

ISBN-13: 352781356X

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Presents state-of-the-art knowledge of heterogeneous catalysts including new applications in energy and environmental fields This book focuses on emerging techniques in heterogeneous catalysis, from new methodology for catalysts design and synthesis, surface studies and operando spectroscopies, ab initio techniques, to critical catalytic systems as relevant to energy and the environment. It provides the vision of addressing the foreseeable knowledge gap unfilled by classical knowledge in the field. Heterogeneous Catalysts: Advanced Design, Characterization and Applications begins with an overview on the evolution in catalysts synthesis and introduces readers to facets engineering on catalysts; electrochemical synthesis of nanostructured catalytic thin films; and bandgap engineering of semiconductor photocatalysts. Next, it examines how we are gaining a more precise understanding of catalytic events and materials under working conditions. It covers bridging pressure gap in surface catalytic studies; tomography in catalysts design; and resolving catalyst performance at nanoscale via fluorescence microscopy. Quantum approaches to predicting molecular reactions on catalytic surfaces follows that, along with chapters on Density Functional Theory in heterogeneous catalysis; first principles simulation of electrified interfaces in electrochemistry; and high-throughput computational design of novel catalytic materials. The book also discusses embracing the energy and environmental challenges of the 21st century through heterogeneous catalysis and much more. Presents recent developments in heterogeneous catalysis with emphasis on new fundamentals and emerging techniques Offers a comprehensive look at the important aspects of heterogeneous catalysis Provides an applications-oriented, bottoms-up approach to a high-interest subject that plays a vital role in industry and is widely applied in areas related to energy and environment Heterogeneous Catalysts: Advanced Design, Characterization and Applications is an important book for catalytic chemists, materials scientists, surface chemists, physical chemists, inorganic chemists, chemical engineers, and other professionals working in the chemical industry.


Model Systems in Catalysis

Model Systems in Catalysis

Author: Robert Rioux

Publisher: Springer Science & Business Media

Published: 2009-11-11

Total Pages: 531

ISBN-13: 0387980490

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This book is an excellent compilation of cutting-edge research in heterogeneous catalysis and related disciplines – surface science, organometallic catalysis, and enzymatic catalysis. In 23 chapters by noted experts, the volume demonstrates varied approaches using model systems and their successes in understanding aspects of heterogeneous catalysis, both metal- and metal oxide-based catalysis in extended single crystal and nanostructured catalytic materials. To truly appreciate the astounding advances of modern heterogeneous catalysis, let us first consider the subject from a historical perspective. Heterogeneous catalysis had its beginnings in England and France with the work of scientists such as Humphrey Davy (1778–1829), Michael Faraday (1791–1867), and Paul Sabatier (1854–1941). Sabatier postulated that surface compounds, si- lar to those familiar in bulk to chemists, were the intermediate species leading to catalytic products. Sabatier proposed, for example, that NiH moieties on a Ni sur- 2 face were able to hydrogenate ethylene, whereas NiH was not. In the USA, Irving Langmuir concluded just the opposite, namely, that chemisorbed surface species are chemically bound to surfaces and are unlike known molecules. These chemisorbed species were the active participants in catalysis. The equilibrium between gas-phase molecules and adsorbed chemisorbed species (yielding an adsorption isotherm) produced a monolayer by simple site-filling kinetics.


Preparation of Solid Catalysts

Preparation of Solid Catalysts

Author: Gerhard Ertl

Publisher: John Wiley & Sons

Published: 2008-08-29

Total Pages: 639

ISBN-13: 3527620680

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Solid catalysts play a fundamental role in all areas between basic research and industrial applications. This book offers a large amount of information about the preparation of solid catalysts. All types of solid catalysts and all important aspects of their preparation are discussed. The highly topical contributions are written by leading experts in disciplines ranging from solid state, interface and solution chemistry to industrial engineering. The straightforward presentation of the material and the comprehensive coverage make this book an essential and indispensible tool for every scientist and engineer working with solid catalysts.


Metal Nanocluster Chemistry

Metal Nanocluster Chemistry

Author: Manzhou Zhu

Publisher: Elsevier

Published: 2023-01-18

Total Pages: 396

ISBN-13: 0323904750

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Atomically precise metal nanoclusters occupy the gap between discrete atoms and plasmonic nanomaterials, and they offer intriguing physical-chemical properties that can be rationalized in terms of their quantum size effects and discrete electronic states. The atomically precise nature of their structures lends them well to structure-property relationship elucidation, making them particularly useful for informing the rational design of nanoclusters with enhanced performance. Metal Nanocluster Chemistry: Ligand-Protected Metal Nanoclusters With Atomic Precision provides a concise introduction to the study of these useful nanoclusters. Beginning with an introduction to the fundamental concepts of, and prospects for, metal nanoclusters, the book goes on to highlight synthetic methods for controllable preparation. The subsequent chapters then highlight characterization, mechanism of size growth and structure evolution, and physical-chemical properties. Later chapters examine theoretical approaches for calculating and evaluating structures and properties. They also highlight the assembly of nanocluster building blocks and their practical applications. Drawing on the knowledge of its expert author, Metal Nanocluster Chemistry is a useful introductory guide to these exciting structures. - Provides a concise introduction to atomically-precise metal nanoclusters, ranging from characterization and property investigation to applications - Includes insight into both current trends and future potential, encouraging and supporting further development - Holistically combines physical approaches with theoretical calculation methods


Functional Nanostructures

Functional Nanostructures

Author: Sudipta Seal

Publisher: Springer Science & Business Media

Published: 2010-06-02

Total Pages: 607

ISBN-13: 0387488057

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This is the first book about functional nanostructures. Nanocrystalline materials exhibit outstanding properties and represent a new class of structural materials having a wide range of applications. In particular, there is considerable interest in developing nanocrystalline materials to be used as functional materials in aerospace applications, automotive industry, wear applications, etc. Future progress in these high technological applications of nanocrystalline materials depends on development of new methods of their fabrication and understanding of the underlying nano-scale and interface effects causing their unique mechanical properties.


The Synergy Between Dynamics and Reactivity at Clusters and Surfaces

The Synergy Between Dynamics and Reactivity at Clusters and Surfaces

Author: L.J. Farrugia

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 365

ISBN-13: 9401101337

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The analogy between the chemistry of molecular transition metal clusters and the processes of chemisorption and catalysis at metal surfaces (the Cluster Surface analogy) has for a number of years provided an interplay between experimental and theoretical inorganic and physical chemists. This collaborative approach has born fruit in the use of well defined modes of metal-ligand bonding in discrete molecular clusters, models for metal-ligand binding on surfaces. Some of the key topics discussed in The Synergy between Dynamics and Reactivity at Clusters and Surfaces are: (1) Mechanisms of the fluxional behaviour in clusters in the liquid phase and the connections with diffusion processes on extended surfaces. The role of metal-metal bond breaking in diffusion. (2) Analogies in the structure of chemisorbed species and related ligands on metallic clusters. (3) Analogies between benzene surface chemistry on extended metal surfaces and on metal surfaces in molecular cluster compounds with particular reference to structural distortions. (4) The role of mobile precursors for dissociation of chemisorption on extended metals and on clusters. Are there analogies in the ligand attachment during cluster compound synthesis? (5) The role of defect sites on metal surfaces in catalyzing chemical reactions and the connection to the special bonding properties of sites on metal clusters having lowest metal-metal coordination. (6) The size of metal clusters needed to mimic surface phenomena on bulk metal surfaces. Different sites needed for different phenomena.


Protected Metal Clusters: From Fundamentals to Applications

Protected Metal Clusters: From Fundamentals to Applications

Author:

Publisher: Elsevier

Published: 2015-09-06

Total Pages: 394

ISBN-13: 0444635025

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Protected Metal Clusters: From Fundamentals to Applications surveys the fundamental concepts and potential applications of atomically precise metal clusters protected by organic ligands. As this class of materials is now emerging as a result of breakthroughs in synthesis and characterization that have taken place over the last few years, the book provides the first reference with a focus on these exciting novel nanomaterials, explaining their formation, and how, and why, they play an important role in the future of molecular electronics, catalysis, sensing, biological imaging, and medical diagnosis and therapy. - Surveys the fundamental concepts and potential applications of atomically precise metal clusters protected by organic ligands. - Provides well-organized, tutorial style chapters that are ideal for teaching and self-study - In-depth descriptions by top scientists in the field - Presents the state-of-the art of protected metal clusters and their future prospects