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Author : Stig Helveg
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (471 download)
Download or read book Scanning Tunneling Microscopy Studies on Model Systems Relevant for Heterogeneous Catalysis written by Stig Helveg and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ebbe Kruse Vestergaard
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (475 download)
Download or read book Scanning Tunneling Microscopy Studies of Model Systems Relevant to Catalysis written by Ebbe Kruse Vestergaard and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael Bowker
Publisher : John Wiley & Sons
ISBN 13 : 9783527628834
Total Pages : 258 pages
Book Rating : 4.6/5 (288 download)
Download or read book Scanning Tunneling Microscopy in Surface Science, Nanoscience, and Catalysis written by Michael Bowker and published by John Wiley & Sons. This book was released on 2009-11-11 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, top international authors in the field of STM and surface science present first-class contributions on this hot topic, bringing the reader up to date with the latest developments in this rapidly advancing field. The focus is on the nanoscale, particularly in relation to catalysis, involving developments in our understanding of the nature of the surfaces of oxides and nanoparticulate materials, as well as adsorption, and includes in-situ studies of catalysis on such model materials. Of high interest to practitioners of surface science, nanoscience, STM and catalysis.
Author : Robert Rioux
Publisher : Springer Science & Business Media
ISBN 13 : 0387980490
Total Pages : 531 pages
Book Rating : 4.3/5 (879 download)
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.
Author : Maria Kulawik
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (18 download)
Download or read book Low-temperature Scanning Tunneling Microscopy Studies on Model Catalyysts written by Maria Kulawik and published by . This book was released on 2006 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zihao Zhou
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (818 download)
Download or read book Scanning Tunneling Microscopy Studies of Metal Clusters Supported on Graphene and Silica Thin Film written by Zihao Zhou and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The understanding of nucleation and growth of metals on a planar support at the atomic level is critical for both surface science research and heterogeneous catalysis studies. In this dissertation, two planar substrates, including graphene and ultra-thin silica film were employed for supported model catalysts studies. The structure and stability of several catalytically important metals supported on these two substrates were thoroughly investigated using scanning tunneling microscopy (STM) coupled with other traditional surface science techniques. In the study of the graphene/Ru(0001) system, the key factors that govern the growth and distribution of metals on the graphene have been studied based on different behaviors of five transition metals, namely Pt, Rh, Pd, Co, and Au supported on the template of a graphene moire pattern formed on Ru(0001). Both metal-carbon (M-C) bond strength and metal cohesive energies play significant roles in the cluster formation process and the M-C bond strength is the most important factor that affects the morphology of clusters at the initial stages of growth. Interestingly, Au exhibits two-dimensional (2-D) structures that span several moire unit cells. Preliminary data obtained by dosing molecular oxygen onto CO pre-covered Au islands suggest that the 2-D Au islands catalyze the oxidation of CO. Moreover, graphene/Ru(0001) system was modified by introducing transition metals, oxygen or carbon at the interface between the graphene and Ru(0001). Our STM results reveal that the geometric and/or electronic structure of graphene can be adjusted correspondingly. In the study of the silica thin film system, the structure of silica was carefully investigated and our STM images favor for the [SiO4] cluster model rather than the network structure. The nucleation and adsorption of three metals, namely Rh, Pt and Pd show that the bond strength between the metal atom and Si is the key factor that determines the nucleation sites at the initial stages of metal deposition. The annealing effect studies reveal that Rh and Pt atoms diffuse beneath the silica film and form the 2-D islands that are covered with a silica thin film. In contrast, the formation of Pd silicide was observed upon annealing to high temperatures.
Author : Michael Bowker
Publisher : Wiley-VCH
ISBN 13 : 9783527319824
Total Pages : 258 pages
Book Rating : 4.3/5 (198 download)
Download or read book Scanning Tunneling Microscopy in Surface Science written by Michael Bowker and published by Wiley-VCH. This book was released on 2010-02-01 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, top international authors in the field of STM and surface science present first-class contributions on this hot topic, bringing the reader up to date with the latest developments in this rapidly advancing field. The focus is on the nanoscale, particularly in relation to catalysis, involving developments in our understanding of the nature of the surfaces of oxides and nanoparticulate materials, as well as adsorption, and includes in-situ studies of catalysis on such model materials. Of high interest to practitioners of surface science, nanoscience, STM and catalysis.
Author :
Publisher : Elsevier
ISBN 13 : 0080462995
Total Pages : 307 pages
Book Rating : 4.0/5 (84 download)
Download or read book Advances in Catalysis written by and published by Elsevier. This book was released on 2006-05-25 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis is the acceleration of a chemical reaction by a catalyst, a substance that notably affects the rate of a chemical reaction without itself being consumed or altered. Since 1948, Advances in Catalysis has filled the gap between the papers that report on and the textbooks that teach in the diverse areas of catalysis research. The editors of and contributors to Advances in Catalysis are dedicated to recording progress in this area. * Provides a comprehensive review of all aspects of catalytic research * Contains in-depth, critical, state-of-the-art reports * An indispensable source for researchers in academia and industry
Author : David Chi-Wai Tang
Publisher :
ISBN 13 :
Total Pages : 562 pages
Book Rating : 4.:/5 (35 download)
Download or read book High Pressure Scanning Tunneling Microscopy Studies of Adsorbate Structure and Mobility During Catalytic Reactions written by David Chi-Wai Tang and published by . This book was released on 2005 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sarah R. Longwitz
Publisher :
ISBN 13 :
Total Pages : 105 pages
Book Rating : 4.:/5 (847 download)
Download or read book Design of a Variable-temperature Scanning Tunneling Microscope to Study Reaction Intermediates in Heterogeneous Catalysis written by Sarah R. Longwitz and published by . This book was released on 2004 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roland Wiesendanger
Publisher : Springer Science & Business Media
ISBN 13 : 3642793665
Total Pages : 359 pages
Book Rating : 4.6/5 (427 download)
Download or read book Scanning Tunneling Microscopy II written by Roland Wiesendanger and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning Tunneling Microscopy II, like its predecessor, presents detailed and comprehensive accounts of the basic principles and the broad range of applications of STM and related scanning probe techniques. The applications discussed in this volume come predominantly from the fields of electrochemistry and biology. In contrast to those in STM I, these studies may be performed in air and in liquids. The extensions of the basic technique to map other interactions are described in chapters on scanning force microscopy, magnetic force microscopy, and scanning near-field optical microscopy, together with a survey of other related techniques. Also discussed here is the use of a scanning proximal probe for surface modification. Together, the two volumes give a comprehensive account of experimental aspects of STM and provide essential reading and reference material. In this second edition the text has been updated and new methods are discussed.
Author : Joost Frenken
Publisher : Springer
ISBN 13 : 3319444395
Total Pages : 232 pages
Book Rating : 4.3/5 (194 download)
Download or read book Operando Research in Heterogeneous Catalysis written by Joost Frenken and published by Springer. This book was released on 2016-12-26 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the emerging field of techniques for visualizing atomic-scale properties of active catalysts under actual working conditions, i.e. high gas pressures and high temperatures. It explains how to understand these observations in terms of the surface structures and dynamics and their detailed interplay with the gas phase. This provides an important new link between fundamental surface physics and chemistry, and applied catalysis. The book explains the motivation and the necessity of operando studies, and positions these with respect to the more traditional low-pressure investigations on the one hand and the reality of industrial catalysis on the other. The last decade has witnessed a rapid development of new experimental and theoretical tools for operando studies of heterogeneous catalysis. The book has a strong emphasis on the new techniques and illustrates how the challenges introduced by the harsh, operando conditions are faced for each of these new tools. Therefore, one can also read this book as a collection of recipes for the development of operando instruments. At present, the number of scientific results obtained under operando conditions is still limited and mostly focused on a simple test reaction, the catalytic oxidation of CO. This reaction thus forms a natural binding element between the chapters, linking the demonstrations of new techniques, and also connecting the theoretical and experimental studies. Some first results on other reactions are also presented. If there is one thing that can be concluded already in this early stage, it is that the catalytic conditions themselves can have dramatic effects on the structure and composition of the surfaces of catalysts, which, in turn can greatly affect the mechanisms, the activity, and the selectivity of the chemical reactions that they catalyze.
Author : Kurt W. Kolasinski
Publisher : John Wiley & Sons
ISBN 13 : 111954663X
Total Pages : 525 pages
Book Rating : 4.1/5 (195 download)
Download or read book Surface Science written by Kurt W. Kolasinski and published by John Wiley & Sons. This book was released on 2020-01-07 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: An updated fourth edition of the text that provides an understanding of chemical transformations and the formation of structures at surfaces The revised and enhanced fourth edition of Surface Science covers all the essential techniques and phenomena that are relevant to the field. The text elucidates the structural, dynamical, thermodynamic and kinetic principles concentrating on gas/solid and liquid/solid interfaces. These principles allow for an understanding of how and why chemical transformations occur at surfaces. The author (a noted expert on in the field) combines the required chemistry, physics and mathematics to create a text that is accessible and comprehensive. The fourth edition incorporates new end-of-chapter exercises, the solutions to which are available on-line to demonstrate how problem solving that is relevant to surface science should be performed. Each chapter begins with simple principles and builds to more advanced ones. The advanced topics provide material beyond the introductory level and highlight some frontier areas of study. This updated new edition: Contains an expanded treatment of STM and AFM as well as super-resolution microscopy Reviews advances in the theoretical basis of catalysis and the use of activity descriptors for rational catalyst design Extends the discussion of two-dimensional solids to reflect remarkable advances in their growth and characterization Delves deeper into the surface science of electrochemistry and charge transfer reactions Updates the “Frontiers and Challenges” sections at the end of each chapter as well as the list of references Written for students, researchers and professionals, the fourth edition of Surface Science offers a revitalized text that contains the tools and a set of principles for understanding the field. Instructor support material, solutions and PPTs of figures, are available at http://booksupport.wiley.com
Author : José A. Rodriguez
Publisher : John Wiley & Sons
ISBN 13 : 1118000161
Total Pages : 500 pages
Book Rating : 4.1/5 (18 download)
Download or read book In-situ Characterization of Heterogeneous Catalysts written by José A. Rodriguez and published by John Wiley & Sons. This book was released on 2013-06-10 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: HELPS RESEARCHERS DEVELOP NEW CATALYSTS FOR SUSTAINABLE FUEL AND CHEMICAL PRODUCTION Reviewing the latest developments in the field, this book explores the in-situ characterization of heterogeneous catalysts, enabling readers to take full advantage of the sophisticated techniques used to study heterogeneous catalysts and reaction mechanisms. In using these techniques, readers can learn to improve the selectivity and the performance of catalysts and how to prepare catalysts as efficiently as possible, with minimum waste. In-situ Characterization of Heterogeneous Catalysts features contributions from leading experts in the field of catalysis. It begins with an introduction to the fundamentals and then covers: Characterization of electronic and structural properties of catalysts using X-ray absorption fine structure spectroscopy Techniques for structural characterization based on X-ray diffraction, neutron scattering, and pair distribution function analysis Microscopy and morphological studies Techniques for studying the interaction of adsorbates with catalyst surfaces, including infrared spectroscopy, Raman spectroscopy, EPR, and moderate pressure XPS Integration of techniques that provide information on the structural properties of catalysts with techniques that facilitate the study of surface reactions Throughout the book, detailed examples illustrate how techniques for studying catalysts and reaction mechanisms can be applied to solve a broad range of problems in heterogeneous catalysis. Detailed figures help readers better understand how and why the techniques discussed in the book work. At the end of each chapter, an extensive set of references leads to the primary literature in the field. By explaining step by step modern techniques for the in-situ characterization of heterogeneous catalysts, this book enables chemical scientists and engineers to better understand catalyst behavior and design new catalysts for green, sustainable fuel and chemical production.
Author : C. Julian Chen
Publisher : Oxford University Press
ISBN 13 : 0198023561
Total Pages : 472 pages
Book Rating : 4.1/5 (98 download)
Download or read book Introduction to Scanning Tunneling Microscopy written by C. Julian Chen and published by Oxford University Press. This book was released on 1993-05-20 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to its nondestructive imaging power, scanning tunneling microscopy has found major applications in the fields of physics, chemistry, engineering, and materials science. This book provides a comprehensive treatment of scanning tunneling and atomic force microscopy, with full coverage of the imaging mechanism, instrumentation, and sample applications. The work is the first single-author reference on STM and presents much valuable information previously available only as proceedings or collections of review articles. It contains a 32-page section of remarkable STM images, and is organized as a self-contained work, with all mathematical derivations fully detailed. As a source of background material and current data, the book will be an invaluable resource for all scientists, engineers, and technicians using the imaging abilities of STM and AFM. It may also be used as a textbook in senior-year and graduate level STM courses, and as a supplementary text in surface science, solid-state physics, materials science, microscopy, and quantum mechanics.
Author : Roland Wiesendanger
Publisher : Springer Science & Business Media
ISBN 13 : 3642973639
Total Pages : 316 pages
Book Rating : 4.6/5 (429 download)
Download or read book Scanning Tunneling Microscopy II written by Roland Wiesendanger and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scanning Tunneling Microscopy II, like its predecessor, presents detailed and comprehensive accounts of the basic principles and broad range of applications of STM and related scanning probe techniques. The applications discussed in this volume come predominantly from the fields of electrochemistry and biology. In contrast to those described in Vol. I, these sudies may be performed in air and in liquids. The extensions of the basic technique to map other interactions are described inchapters on scanning force microscopy, magnetic force microscopy, scanning near-field optical microscopy, together with a survey of other related techniques. Also described here is the use of a scanning proximal probe for surface modification. Togehter, the two volumes give a comprehensive account of experimental aspcets of STM. They provide essentialreading and reference material for all students and researchers involvedin this field.
Author : H. Neddermeyer
Publisher : Springer Science & Business Media
ISBN 13 : 9401118124
Total Pages : 275 pages
Book Rating : 4.4/5 (11 download)
Download or read book Scanning Tunneling Microscopy written by H. Neddermeyer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: The publication entitled "Surface Studies by Scanning Tunneling Mi Rl croscopy" by Binnig, Rohrer, Gerber and Weibel of the IBM Research Lab oratory in Riischlikon in 1982 immediately raised considerable interest in the sur face science community. It was demonstrated in Reference R1 that images from atomic structures of surfaces like individual steps could be obtained simply by scanning the surface with a sharp metal tip, which was kept in a constant distance of approximately 10 A from the sample surface. The distance control in scanning tunneling microscopy (STM) was realized by a feedback circuit, where the electri cal tunneling current through the potential barrier between tip and sample is used for regulating the tip position with a piezoelectric xyz-system. A similar experi mental approach has already been described by Young et al. for the determination l of the macroscopic roughness of a surface. A number of experimental difficulties had to be solved by the IBM group until this conceptual simple microscopic method could be applied successfully with atomic resolution. Firstly, distance and scanning control of the tip have to be operated with sufficient precision to be sensitive to atomic structures. Secondly, sample holder and tunneling unit have to be designed in such a way that external vibrations do not influence the sample-tip distance and that thermal or other drift effects become small enough during measurement of one image.
