Electron Energy Loss Spectroscopy of Adsorbates on Ni and Cr Surfaces
Author: Albert George Baca
Publisher:
Published: 1985
Total Pages: 322
ISBN-13:
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Author: Albert George Baca
Publisher:
Published: 1985
Total Pages: 322
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DOWNLOAD EBOOKAuthor: Margaret Ann Schulz
Publisher:
Published: 1985
Total Pages: 218
ISBN-13:
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Publisher:
Published: 1985
Total Pages: 712
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Publisher:
Published: 1982
Total Pages:
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DOWNLOAD EBOOKTwo techniques which have made important contributions to the understanding of surface phenomena are high resolution electron energy loss spectroscopy (EELS) and photoelectron diffraction (PD). EELS is capable of directly measuring the vibrational modes of clean and adsorbate covered metal surfaces. In this work, the design, construction, and performance of a new EELS spectrometer are described. These results are discussed in terms of possible structures of the O-Cu(001) system. Recommendations for improvements in this EELS spectrometer and guidelines for future spectrometers are given. PD experiments provide accurate quantitative information about the geometry of atoms and molecules adsorbed on metal surfaces. The technique has advantages when used to study disordered overlayers, molecular overlayers, multiple site systems, and adsorbates which are weak electron scatterers. Four experiments were carried out which exploit these advantages.
Author: C. R. Brundle
Publisher: Elsevier
Published: 2000-04-01
Total Pages: 761
ISBN-13: 0080954375
DOWNLOAD EBOOKStudies in Surface Science and Catalysis 14: Vibrations at Surfaces documents the proceedings of the third International Conference on ""Vibrations at Surfaces"" held at Asilomar, California, from September 1-4, 1982. Almost all of the 102 papers presented at the meeting are published in this volume. The topics chosen for the eight sessions held over a span of three days were: (I) Vibrational Frequency Shifts and Widths-Lateral Interactions; (II) Dynamical Processes at Surfaces; (III) and (IV) Electron Loss Spectroscopy; (V) Raman and Surface Enhanced Raman Scattering; (VI) Infrared Absorption and Reflection Spectroscopy; (VII) Beam Surface Scattering Surface Phonons; (VIII) Electron Tunneling Spectroscopy - Surface Enhanced Raman Studies in Electrochemistry. In addition, C. B. Duke presented an introductory keynote surveying progress in the field since the last meeting. In the final session H. Ibach and T. Grimley presented conference overviews and future prospects for the field from an experimental and theoretical perspective. Also included in the Proceedings are four literature surveys on Energy Loss, Inelastic Tunneling, Infrared and Raman (SERS) papers.
Author: Lawrence Berkeley Laboratory. Materials and Molecular Research Division
Publisher:
Published: 1986
Total Pages: 340
ISBN-13:
DOWNLOAD EBOOKAuthor: Michael Gerard Walls
Publisher:
Published: 1988
Total Pages:
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DOWNLOAD EBOOKAuthor: Lee James Richter
Publisher:
Published: 1988
Total Pages: 964
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DOWNLOAD EBOOKAuthor: John C. Hemminger
Publisher:
Published: 1988
Total Pages: 7
ISBN-13:
DOWNLOAD EBOOKThis paper involved the use of the experimental techniques thermal desorption spectroscopy (TDS), high resolution electron energy loss spectroscopy (HREELS) and low energy electron diffraction (LEED) and theoretical developments in the analysis of adsorbate vibrations to study the chemistry of a wide range of nitrogen containing hydrocarbons on transition metal surfaces. Fifteen technical reports resulted from the research. Keywords: Cyanogen, Transition metals, Vibrations of Adsorbates, Surface defects.
Author: R.M. Lambert
Publisher: Springer Science & Business Media
Published: 1997-02-28
Total Pages: 550
ISBN-13: 9780792344483
DOWNLOAD EBOOKHeterogeneous 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.