Reactivity Of Cluster Model Catalysts

Download Reactivity Of Cluster Model Catalysts full books in PDF, epub, and Kindle. Read online Reactivity Of Cluster Model Catalysts ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Chemisorption and Reactivity on Supported Clusters and Thin Films:

Author : R.M. Lambert
Publisher : Springer Science & Business Media
ISBN 13 : 9401589119
Total Pages : 534 pages
Book Rating : 4.4/5 (15 download)

DOWNLOAD NOW!

Book Synopsis Chemisorption and Reactivity on Supported Clusters and Thin Films: by : R.M. Lambert

Download or read book Chemisorption and Reactivity on Supported Clusters and Thin Films: written by R.M. Lambert and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous catalysis provides the backbone of the world's chemical and oil industries. The innate complexity of practical catalytic systems suggests that useful progress should be achievable by investigating key aspects of catalysis by experimental studies on idealised model systems. Thin films and supported clusters are two promising types of model system that can be used for this purpose, since they mimic important aspects of the properties of practical dispersed catalysts. Similarly, appropriate theoretical studies of chemisorption and surface reaction clusters or extended slab systems can provide valuable information on the factors that underlie bonding and catalytic activity. This volume describes such experimental and theoretical approaches to the surface chemistry and catalytic behaviour of metals, metal oxides and metal/metal oxide systems. An introduction to the principles and main themes of heterogeneous catalysis is followed by detailed accounts of the application of modern experimental and theoretical techniques to fundamental problems. The application of advanced experimental methods is complemented by a full description of theoretical procedures, including Hartree-Fock, density functional and similar techniques. The relative merits of the various approaches are considered and directions for future progress are indicated.

Reactivity of Cluster Model Catalysts

Author : Vahideh Habibpour
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (472 download)

DOWNLOAD NOW!

Book Synopsis Reactivity of Cluster Model Catalysts by : Vahideh Habibpour

Download or read book Reactivity of Cluster Model Catalysts written by Vahideh Habibpour and published by . This book was released on 2009 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Reactivity of Cluster Model Catalysts

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (696 download)

DOWNLOAD NOW!

Book Synopsis Reactivity of Cluster Model Catalysts by :

Download or read book Reactivity of Cluster Model Catalysts written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In the course of this PhD thesis, the control and tunability of the reactivity of model nanocatalysts (magnesia supported size-selected metal clusters) were explored. To address dependencies of the catalytic activities on the thickness of MgO films, dimensionalities of adsorbed clusters, and oxygen pre-treatment of catalysts various temperature programmed reaction experiments as well as Fourier transform infrared spectroscopy were carried out in conjunction with first-principles theoretical calculations. Nanocatalytic materials were synthesied using a state-of-the-art cluster vaporisation source. It was demonstrated that reaction pathways involved in the CO combustion over model systems consisting of size-selected metal clusters (Au20, Pd13, and Pd30) varies with the support properties and oxidation state of the cluster catalysts.

Metal Clusters and Their Reactivity

Author : Zhixun Luo
Publisher : Springer Nature
ISBN 13 : 9811597049
Total Pages : 267 pages
Book Rating : 4.8/5 (115 download)

DOWNLOAD NOW!

Book Synopsis Metal Clusters and Their Reactivity by : Zhixun Luo

Download or read book Metal Clusters and Their Reactivity written by Zhixun Luo and published by Springer Nature. This book was released on 2020-10-31 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses current techniques and instrumentation for cluster chemistry. It addresses both the experimental and theoretical aspects of gas-phase metal cluster reactivities, especially those pertaining to pollution removal, energetic reactions and corrosion and anticorrosion. These metal cluster systems have attracted enormous interest as they display a completely new class of physical, chemical, electronic, magnetic and catalytic properties. As these properties change with size and composition, it can thus be understood how their nature evolves from atoms to bulk solids. The book offers readers a basic understanding of the structural chemistry and reactivity of metal clusters in both gas-phase and wet chemistry. Further, the lessons they learn here regarding metal cluster chemistry will prepare researchers for the study of condensed phase dynamics that pertain to wet chemical synthesis, soft-landing deposition and cluster assembly.

Metal Clusters in Catalysis

Author : Bruce C. Gates
Publisher : Elsevier Publishing Company
ISBN 13 :
Total Pages : 686 pages
Book Rating : 4.F/5 ( download)

DOWNLOAD NOW!

Book Synopsis Metal Clusters in Catalysis by : Bruce C. Gates

Download or read book Metal Clusters in Catalysis written by Bruce C. Gates and published by Elsevier Publishing Company. This book was released on 1986 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on metal clusters (compounds with metal-metal bonds) has undergone explosive growth and the subject is now perhaps one of the hottest'' topics in organometallic chemistry. The prospect of catalytic applications has motivated a large part of the research mentioned in this book - the long term goal being to exploit the unique properties of metal clusters to prepare catalysts with new activities and selectivities. This is the first book to address the role of metal clusters in catalysis. The coverage is up-to-date and is particularly comprehensive, ranging from molecular chemistry of clusters (synthesis, structure, thermochemistry, reactivity, and homogeneous catalysis) to supported clusters (molecular analogues on polymers, and metal oxides and metals in zeolite cages). Preparation by methods of organometallic surface chemistry and metal atom chemistry and characterization of surface structures by physical methods are highlighted. Concepts unifying metal cluster chemistry and the chemistry of metal surfaces are elucidated. Of particular value to the user will be the cluster and subject indexes. The cluster index is organized in alphabetical order according to the metal.

Transition Metal Carbonyl Cluster Chemistry

Author : Paul J. Dyson
Publisher : CRC Press
ISBN 13 : 1482283077
Total Pages : 180 pages
Book Rating : 4.4/5 (822 download)

DOWNLOAD NOW!

Book Synopsis Transition Metal Carbonyl Cluster Chemistry by : Paul J. Dyson

Download or read book Transition Metal Carbonyl Cluster Chemistry written by Paul J. Dyson and published by CRC Press. This book was released on 2018-10-03 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transition metal carbonyl clusters (TMCCs) continue to inspire great interest in chemical research, as much for their fascinating structures as for potential industrial applications conferred by their unique properties. This highly accessible book introduces the bonding, structure, spectroscopic properties, and characterization of clusters, and then explores their synthesis, reactivity, reaction mechanisms and use in organic synthesis and catalysis. Transition Metal Carbonyl Cluster Chemistry describes models and rules that correlate cluster structure with electron count, which are then applied in worked examples. Subsequent chapters explain how bonding relates to molecular structure, demonstrate the use of spectroscopic techniques such as NMR, IR and MS in cluster chemistry, and outline the factors contributing to the stability, dynamics and reactivity of clusters. The second part of this book discusses the synthesis and applications of TMCCs. It emphasizes the differences between the reactivities of clusters vs. mononuclear metal complexes, contingent to the availability of multiple-bonding sites and heterosite reactivity. The final chapters discuss reactions in which clusters act as homogeneous catalysts; including discussion on the use of solid and biphasic liquid-liquid supported clusters in heterogeneous catalysts. A useful reference for those commencing further research or post-graduate study on metal carbonyl clusters and advanced organometallic chemistry, this book is also a cornerstone addition to academic and libraries as well as private collections.

Catalysis with Supported Size-selected Pt Clusters

Author : Florian Frank Schweinberger
Publisher : Springer Science & Business Media
ISBN 13 : 3319014994
Total Pages : 231 pages
Book Rating : 4.3/5 (19 download)

DOWNLOAD NOW!

Book Synopsis Catalysis with Supported Size-selected Pt Clusters by : Florian Frank Schweinberger

Download or read book Catalysis with Supported Size-selected Pt Clusters written by Florian Frank Schweinberger and published by Springer Science & Business Media. This book was released on 2013-11-01 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Catalysis by Di- and Polynuclear Metal Cluster Complexes

Author : Richard D. Adams
Publisher : Wiley-VCH
ISBN 13 :
Total Pages : 586 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Catalysis by Di- and Polynuclear Metal Cluster Complexes by : Richard D. Adams

Download or read book Catalysis by Di- and Polynuclear Metal Cluster Complexes written by Richard D. Adams and published by Wiley-VCH. This book was released on 1998-03-16 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pioneer work on catalysis of organic chemical reactions involving multinuclear metal complexes. Catalysis by Di- and Polynuclear Metal Cluster Complexes surveys the latest developments at the frontier of this exciting field, combining theory with new and original examples of catalytic processes produced by polynuclear metal complexes. An invaluable resource for inorganic and organometallic chemists in industry and R&D, it contains chapters from world experts and scholars on: Concepts and models for characterizing homogeneous reactions catalyzed by transition metal cluster complexes Activation of ruthenium clusters for use in catalysis Catalysis by mixed metal clusters containing gold phosphine groupings Catalysis by sulfido bridged dimolybdenum complexes Dimolybdenum and ditungsten complexes Synthesis of organic compounds catalyzed by transition metal clusters Catalysis with dirhodium (II) complexes Catalytic synthesis of polythioether macrocycles Catalysis of Rh, Rh-Co, and Ir-Co multinuclear complexes and its applications to organic syntheses Bimetallic hydroformylation catalysis Catalysis by colloids Catalysis with palladium clusters Heterometallic clusters for heterogeneous catalysis Supported clusters in catalysis.

Model Systems in Catalysis: Cluster Reactivity, Photocatalysis and Ligand-protection

Author : Martin Tschurl
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (123 download)

DOWNLOAD NOW!

Book Synopsis Model Systems in Catalysis: Cluster Reactivity, Photocatalysis and Ligand-protection by : Martin Tschurl

Download or read book Model Systems in Catalysis: Cluster Reactivity, Photocatalysis and Ligand-protection written by Martin Tschurl and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Synergy Between Dynamics and Reactivity at Clusters and Surfaces

Author : L.J. Farrugia
Publisher : Springer Science & Business Media
ISBN 13 : 9401101337
Total Pages : 365 pages
Book Rating : 4.4/5 (11 download)

DOWNLOAD NOW!

Book Synopsis The Synergy Between Dynamics and Reactivity at Clusters and Surfaces by : L.J. Farrugia

Download or read book The Synergy Between Dynamics and Reactivity at Clusters and Surfaces written by L.J. Farrugia and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Nanocatalysis

Author : Ulrich Heiz
Publisher : Springer Science & Business Media
ISBN 13 : 3540745513
Total Pages : 514 pages
Book Rating : 4.5/5 (47 download)

DOWNLOAD NOW!

Book Synopsis Nanocatalysis by : Ulrich Heiz

Download or read book Nanocatalysis written by Ulrich Heiz and published by Springer Science & Business Media. This book was released on 2007-09-27 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanocatalysis is one of the most exciting subfields to have emerged from nanoscience. Its central aim is the control of chemical reactions by changing the size, dimensionality, chemical composition and morphology of the reaction center and by changing the kinetics using nanopatterning of the reaction centers. This approach opens up new avenues for atom-by-atom design of nanocatalysts with distinct and tunable chemical activity, specificity, and selectivity. This book is intended to give a pedagogical and methodological overview of this exciting and growing field and to highlight specific examples of current research. In this way, it serves both as an instructive introduction for graduate students who plan to enter the field and as a reference work for scientists already active in this and related areas.

Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control

Author : Benedetto Corain
Publisher : Elsevier
ISBN 13 : 0080555004
Total Pages : 471 pages
Book Rating : 4.0/5 (85 download)

DOWNLOAD NOW!

Book Synopsis Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control by : Benedetto Corain

Download or read book Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control written by Benedetto Corain and published by Elsevier. This book was released on 2011-08-11 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Nanoclusters in Catalysis and Materials Science: The Issue of Size Control deals with the synthesis of metal nanoclusters along all known methodologies. Physical and chemical properties of metal nanoclusters relevant to their applications in chemical processing and materials science are covered thoroughly. Special attention is given to the role of metal nanoclusters size and shape in catalytic processes and catalytic applications relevant to industrial chemical processing.An excellent text for expanding the knowledge on the chemistry and physics of metal nanoclusters. Divided in two parts; Part I deals with general aspects of the matter and Part II has to be considered a useful handbook dealing with the production of metal nanoclusters, especially from their size-control point of view. * Divided into two parts for ease of reference: general and operational * Separation of synthetic aspects, physical properties and applications* Specific attention is given to the task of metal nanoclusters size-control

Model Systems in Catalysis

Author : Robert Rioux
Publisher : Springer Science & Business Media
ISBN 13 : 0387980490
Total Pages : 531 pages
Book Rating : 4.3/5 (879 download)

DOWNLOAD NOW!

Book Synopsis Model Systems in Catalysis by : Robert Rioux

Download or read book Model Systems in Catalysis written by Robert Rioux and published by Springer Science & Business Media. This book was released on 2009-11-11 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

New Insights in the Gas-Phase Ion Chemistry of Group IVB Transition Metal Oxides

Author : Christopher Harmon
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (959 download)

DOWNLOAD NOW!

Book Synopsis New Insights in the Gas-Phase Ion Chemistry of Group IVB Transition Metal Oxides by : Christopher Harmon

Download or read book New Insights in the Gas-Phase Ion Chemistry of Group IVB Transition Metal Oxides written by Christopher Harmon and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of gas-phase cluster models has emerged as a useful tool to model catalytic active sites on surfaces. By observing how the reactivity of TMO clusters changes with cluster size, active site, and metal composition, we draw insights about the molecular factors governing reactivity and selectivity. The aim is to provide a conceptual framework to drive the development of improved catalysts with higher activity and selectivity.As group IVB transition metal oxides (TMOs) are widely used as catalysts and supports, we have undertaken mass spectrometric reactivity studies of titanium, zirconium, and hafnium oxide clusters with small organic molecules of interest in catalysis. We particularly note the differences in reactivity observed as the identity of the metal in the cluster changes. We report the reactivity of MxO2x+ (M = Ti, Zr) clusters that contain radical atomic oxygen, O, with methane, ethane, propane, ethylene, and propylene. We observe that in many cases the titanium clusters undergo a type of etching reaction, where the cluster loses a TiO unit and associates the reactant gas. Zirconium oxides strongly prefer the hydrogen atom abstraction pathway, and no evidence for an etching type of reaction is found for zirconium clusters. Next, we examine the reactivity of TixO2x+1+ clusters that are theoretically predicted to contain a superoxide active site, O2, and find that the reactivity is quite different from ZrxO2x+1+. We also present one of the first studies of the reactivity of hafnium oxide clusters, and show that HfxO2x+1+ acts very similarly to ZrxO2x+1+ clusters, attributed to a superoxide active site. However, Hf2O4+, which contains a radical oxygen atom, shows drastically different reactivity from Zr2O4+. Finally, we discuss these studies in the context of isoelectronic superatoms.

Theoretical Aspects of Heterogeneous Catalysis

Author : John B. Moffat
Publisher : Springer Science & Business Media
ISBN 13 : 9401098824
Total Pages : 548 pages
Book Rating : 4.4/5 (1 download)

DOWNLOAD NOW!

Book Synopsis Theoretical Aspects of Heterogeneous Catalysis by : John B. Moffat

Download or read book Theoretical Aspects of Heterogeneous Catalysis written by John B. Moffat and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis involves just about every field of scientific study. This means that a multidisciplinary approach is needed in catalytic studies. Catalysis involves breaking and forming new bonds and this requires an under standing of either adsorption by bonding to an extended structures or bonding in a coordination sphere. Any understanding of catalytic action must necessarily involve an understanding of this bonding. Even 200 years ago scientists were aware that a properly treated mate rial, such as charcoal, could adsorb an enormous quantity of gas. In 1812, de Sassasure (English translation, Annal Philosphy, 6, 241 (1815» pro posed that the ability of a material to increase the rate of chemical reac tion was due to adsorption of the material in the fine structure of the solid so that the concentrations of the reactants were significantly increased, and this increase in concentration led to an increase in reaction rate. During the 1800s, little advance was made in the understanding of adsorp tion.

Clusters

Author : Minh Tho Nguyen
Publisher : Springer
ISBN 13 : 3319489186
Total Pages : 372 pages
Book Rating : 4.3/5 (194 download)

DOWNLOAD NOW!

Book Synopsis Clusters by : Minh Tho Nguyen

Download or read book Clusters written by Minh Tho Nguyen and published by Springer. This book was released on 2017-01-31 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of atomic clusters continues to attract great interest amongst physicists and chemists alike. This is in part due to their intrinsic properties and potential industrial applications. The first part of Binary Clusters is devoted to recent developments in experimental techniques, the second part covers a variety of theoretical approaches. Different theoretical methods based on group/graph theories and quantum chemical computational methods as well as various spectroscopy techniques (such as mass, laser, infrared, photoelectron etc.) are applied to the determination of the existence of geometrical and electronic structures, chemical bonding phenomena, and the thermodynamic stabilities of several classes of binary clusters. All chapters within this review volume have been contributed by experts in chemistry, physics, and material sciences based at the University of Leuven, Belgium. This book is aimed at professionals and students working in cluster science.

Catalysis and Electrocatalysis at Nanoparticle Surfaces

Author : Andrzej Wieckowski
Publisher : CRC Press
ISBN 13 : 0203912713
Total Pages : 970 pages
Book Rating : 4.2/5 (39 download)

DOWNLOAD NOW!

Book Synopsis Catalysis and Electrocatalysis at Nanoparticle Surfaces by : Andrzej Wieckowski

Download or read book Catalysis and Electrocatalysis at Nanoparticle Surfaces written by Andrzej Wieckowski and published by CRC Press. This book was released on 2003-02-19 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt: Illustrating developments in electrochemical nanotechnology, heterogeneous catalysis, surface science and theoretical modelling, this reference describes the manipulation, characterization, control, and application of nanoparticles for enhanced catalytic activity and selectivity. It also offers experimental and synthetic strategies in nanoscale surface science. This standard-setting work clariefies several practical methods used to control the size, shape, crystal structure, and composition of nanoparticles; simulate metal-support interactions; predict nanoparticle behavior; enhance catalytic rates in gas phases; and examine catalytic functions on wet and dry surfaces.