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  • 1
    Keywords: Catalysis-Computer simulation. ; Materials science-Computer simulation. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (526 pages)
    Edition: 1st ed.
    ISBN: 9783527802661
    Language: English
    Note: Intro -- Table of Contents -- Series -- Title -- Copyright -- Preface -- List of Contributors -- Part I: Electronic Structure Calculations -- 1: From Hartree-Fock to Electron Correlation: Application to Magnetic Systems -- 1.1 Introduction -- 1.2 Methodological Aspects of the Electronic Problem -- 1.3 Correlation at Work -- 1.4 Discussion and Concluding Remarks -- References -- 2: Basic Aspects of Density Functional Theory -- 2.1 Introduction -- 2.2 The Exchange-Correlation Potential -- 2.3 Physical Interpretation of Kohn-Sham Orbital Energies -- References -- 3: TDDFT for Excited States -- 3.1 Introduction -- 3.2 Formalism -- 3.3 Technology -- 3.4 Example: Oxirane -- 3.5 The Future -- References -- 4: Periodic Systems, Plane Waves, the PAW Method, and Hybrid Functionals -- 4.1 Periodic Systems -- 4.2 Plane Waves, Pseudopotentials, and the PAW Method -- 4.3 Hybrid Functionals -- References -- 5: Periodic Linear Combination of Atomic Orbitals and Order-N Methods -- 5.1 Introduction -- 5.2 LCAO and Extended Systems -- 5.3 Linear-Scaling DFT -- 5.4 Linear-Scaling Solving of the Eigenvalue Problem -- 5.5 Conclusions and Outlook -- References -- 6: Ab Initio Molecular Dynamics -- 6.1 Introduction -- 6.2 Born-Oppenheimer Molecular Dynamics -- 6.3 Car-Parrinello Molecular Dynamics -- 6.4 Error Estimate in CP-MD -- 6.5 Conclusions -- References -- Part II: Force Fields, Classical Dynamics and Statistical Methods -- 7: Molecular Simulation Techniques Using Classical Force Fields -- 7.1 Introduction -- 7.2 Molecular Dynamics -- 7.3 Rare Events -- 7.4 Monte Carlo -- References -- 8: Coarse-Grained Molecular Dynamics -- 8.1 Introduction -- 8.2 The Coarse-Graining Approach -- 8.3 Methods to Obtain Effective Coarse-Grained Interactions -- 8.4 Application of Coarse Graining to Lipid Membranes -- 8.5 Conclusion -- References. , 9: Reactive Force Fields: Concepts of ReaxFF -- 9.1 Introduction -- 9.2 Force Field Methods -- 9.3 Making a Force Field Reactive -- 9.4 Transferability, Training, and Applications of ReaxFF -- References -- 10: Kinetic Monte Carlo -- 10.1 Introduction -- 10.2 The Lattice-Gas Model and the Master Equation -- 10.3 Kinetic Monte Carlo Algorithms -- 10.4 An Example: Oscillations in the CO Oxidation on Pt Surfaces -- 10.5 New Developments -- References -- Part III: Properties -- 11: Theory of Elastic and Inelastic Electron Tunneling -- 11.1 Introduction -- 11.2 Simulations of Constant Current STM Images -- 11.3 Example of Constant Current STM Simulation: Acetylene on Cu(100) -- 11.4 Extension of the Tersoff-Hamman Theory to IETS-STM -- 11.5 Applications of the IETS Theory to Realistic Systems -- 11.6 Conclusions -- References -- 12: X-Ray Spectroscopy Calculations Within Kohn-Sham DFT: Theory and Applications -- 12.1 Introduction -- 12.2 Excited States in Kohn-Sham DFT -- 12.3 X-Ray Absorption Spectroscopy (XAS) -- 12.4 Practical Excited State Calculations -- 12.5 Slater Transition-State Method -- 12.6 Transition Potential Approach -- 12.7 Applications of XAS Calculations -- 12.8 X-Ray Emission Spectroscopy -- 12.9 Summary and Outlook -- References -- 13: Basics of Crystallography -- 13.1 Single Crystals and Bulk Lattices -- 13.2 Netplanes, Miller Indices -- 13.3 deal Single Crystal Surfaces -- 13.4 Real Crystal Surfaces, Relaxation, Reconstruction, Adsorbates -- References -- 14: Adsorption and Diffusion in Porous Systems -- 14.1 Introduction -- 14.2 Transport in Protein Crystals: Insights from Molecular Simulations -- 14.3 Adsorption of Hydrocarbons in Zeolites -- 14.4 Simulating Loading Dependence of the Diffusion in Zeolites Using Rare-Events Simulations. , 14.5 Simulation of Diffusion and Reaction in Functionalized, Amorphous Nanoporous Catalysts, and Membranes -- References -- 15: Transport Processes in Polymer Electrolyte Fuel Cells: Insights from Multiscale Molecular Simulations -- 15.1 Introduction -- 15.2 Relevant Approaches in Materials Modeling -- 15.3 Proton Transport in PEMs -- 15.4 Water Transport in Hydrated Nafion Membrane -- 15.5 Atomistic MD Simulations of CL -- 15.6 Self-Organization in PEMs and CLs at the Mesocopic Scale -- 15.7 Concluding Remarks -- References -- Part IV: Catalytic Applications -- 16: Application of the DFT Method to the Study of Intramolecular Palladium Shifts in Aryl and Polyaryl Complexes -- 16.1 Introduction -- 16.2 Computational Details -- 16.3 Results -- 16.4 Discussion -- References -- 17: Combining Electronic Structure Calculations and Spectroscopy to Unravel the Structure of Grafted Organometallic Complexes -- 17.1 Introduction -- 17.2 Methods -- 17.3 Modeling γ-Alumina -- 17.4 Understanding the Structure of Surface Species Resulting from Grafting of Molecular Organometallic Complexes on γ-Alumina -- 17.5 Conclusion -- References -- 18: Physical and Chemical Properties of Oxygen at Vanadium and Molybdenum Oxide Surfaces: Theoretical Case Studies -- 18.1 Introduction -- 18.2 Vanadium Oxide -- 18.3 Molybdenum Oxide -- References -- 19: Modeling Catalytic Reactivity in Heterogeneous Catalysis -- 19.1 General Concepts -- 19.2 Linear Activation Energy-Reaction Energy Relationships -- 19.3 Micro-kinetic Expressions -- Derivation of Volcano Curve -- 19.4 Compensation Effect -- 19.5 Hydrocarbon Conversion Catalyzed by Zeolites -- 19.6 Structure Sensitive and Non-sensitive Reactions -- 19.7 Summary -- References -- 20: Conclusion: Challenges to Computational Catalysis -- 20.1 Introduction -- 20.2 The Simulation of Catalytic Reactivity. , 20.3 The Structure of the Catalytic Complex or Surface -- 20.4 Catalyst Synthesis -- 20.5 Grand Challenges and New Developments -- Subject Index -- End User License Agreement.
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  • 2
    Online Resource
    Online Resource
    Newark :John Wiley & Sons, Incorporated,
    Keywords: Heterogeneous catalysis. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (490 pages)
    Edition: 1st ed.
    ISBN: 9783527608348
    Language: English
    Note: Intro -- Molecular Heterogeneous Catalysis -- CONTENTS -- Preface -- 1 Introduction -- 1.1 Importance of Catalysis -- 1.1.1 Additional Suggested Textbooks on Heterogeneous Catalysis -- 1.2 Molecular Description of Heterogeneous Catalysis -- 1.3 Outline of the Book -- 1.4 Theoretical and Simulation Methods -- 2 Principles of Molecular Heterogeneous Catalysis -- 2.1 General Introduction -- 2.1.1 The Catalytic Cycle -- 2.1.1.1 The Sabatier Principle -- 2.1.1.2 Reaction Cycles -- Intermediate Reagents -- 2.2 Physical Chemistry of Intrinsic Reaction Rates -- 2.2.1 Introduction -- 2.2.2 The Transition-State Theory Definition of the Reaction Rate Constant -- Loose and Tight Transition States -- 2.2.3 The Brønsted-Evans-Polanyi Reaction Rate Expression Relations -- 2.3 The Reactive Surface-Adsorbate Complex and the Influence of the Reaction Environment -- 2.3.1 Introduction -- 2.3.2 The Material- and Pressure-Gap Problem in Heterogeneous Catalysis -- 2.3.3 Ensemble Effects and Defect Sites -- 2.3.4 Cluster Size Effects and Metal-Support Interaction -- 2.3.4.1 Metal-Support Effects and Promotion -- Relation to Catalyst Synthesis -- 2.3.4.2 Cluster Size Dependence -- 2.3.4.3 Gold Catalysts -- an Example of Coordination, Particle Size and Support Effects -- 2.3.4.4 Structural Effects -- 2.3.4.5 Quantum Size Effects -- 2.3.4.6 Support Effects -- 2.3.4.7 Elucidating Mechanisms and the Nature of Active Sites -- 2.3.4.8 Electron Transfer Effects -- 2.3.4.9 Neutral Au Clusters -- 2.3.4.10 Negatively Charged Au clusters -- 2.3.4.11 Positively Charged Au Clusters -- 2.3.5 Cooperativity -- 2.3.6 Surface Moderation by Coadsorption of Organic Molecules -- 2.3.7 Stereochemistry of Homogeneous Catalysts. Anti-Lock and Key Concept -- 2.4 Surface Kinematics -- 2.4.1 Surface Reconstruction -- 2.4.2 Transient Reaction Intermediates in Oxidation Catalysis -- 2.5 Summary. , Concepts in Catalysis -- 3 The Reactivity of Transition-Metal Surfaces -- 3.1 General Introduction -- 3.2 Quantum Chemistry of the Chemical Bond in Molecules -- 3.3 Chemical Bonding to Transition-Metal Surfaces -- 3.3.1 Bonding in Transition-Metal Complexes -- 3.4 Chemisorption of Atoms: Periodic Trends -- 3.5 Elementary Quantum Chemistry of the Surface Chemical Bond -- 3.5.1 Molecular Orbital View of Chemisorption. A Summary -- 3.6 Elementary Reaction Steps on Transition-Metal Surfaces. Trends with Position of a Metal in the Periodic Table -- 3.6.1 General Considerations -- 3.6.2 Activation of CO and Other Diatomics -- 3.6.3 Association Reactions -- Carbon-Carbon Bond Formation -- 3.7 Organometallic Chemistry of the Hydroformulation Reaction -- 3.8 Activation of CH(4), NH(3) and H(2)O -- 3.9 Carbon-Carbon Bond Cleavage and Formation Reactions, a Comparison with CO Oxidation -- 3.10 Lateral Interactions -- 3.10.1 Introduction -- 3.10.2 Lateral Interaction Models -- 3.10.3 Hydrogenation of Ethylene -- the Importance of Lateral Interactions -- 3.10.4 Lateral Interactions -- the Simulation of Overall Surface Reaction Rates -- 3.11 Addendum -- Hybridization -- 4 Shape Selective-Microporous Catalysts, the Zeolites -- 4.1 Zeolite Catalysis, an Introduction -- 4.1.1 Zeolite Structural Features -- 4.2 Activation of Reactant Molecules -- 4.2.1 Proton-Activated Reactivity -- 4.2.2 Transition-State Selectivity. Alkylation of Toluene by Methanol Catalyzed by Mordenite -- 4.2.3 Lewis Acid Catalysis -- 4.2.3.1 Lewis Acidity in Zeolites -- Cations Compared with Oxy-Cations -- 4.3 Redox Catalysis -- 4.3.1 Selective Oxidation of Alkanes Using the Reducible M(x)Al(1-x)PO(4) Zeolitic Polymorphs -- 4.3.2 Photo Catalytic Oxidation -- 4.3.3 The N(2)O Decomposition Reaction -- Self-Organization in Zeolite Catalysis -- 4.3.4 Oxidation of Benzene by N(2)O, the Panov Reaction. , 4.4 The Zeolite Catalytic Cycle. Adsorption and Catalysis in Zeolites -- the Principle of Least Optimum Fit -- 4.5 Adsorption Equilibria and Catalytic Selectivity -- 4.6 Diffusion in Zeolites -- 5 Catalysis by Oxides and Sulfides -- 5.1 General Introduction -- 5.2 Elementary Theory of Reactivity and Stability of Ionic Surfaces -- 5.3 The Contribution of Covalency to the Ionic Surface Chemical Bond -- 5.3.1 CO Oxidation by RuO(2) -- 5.3.2 Atomic Orbital Hybridization at Surfaces -- Hydration Energies -- 5.4 Medium Effects on Brønsted Acidity -- 5.5 Acidity of Heteropolyacids -- 5.6 Oxidation Catalysis -- 5.6.1 Introduction -- 5.6.2 Lessons Learned from Surface Science -- 5.6.3 Redox Considerations -- 5.6.4 Bifunctional Systems -- 5.6.5 Butane Oxidation to Maleic Anhydride -- 5.6.6 Methanol Oxidation -- 5.6.7 Isobutyric Acid Oxidative Dehydrogenation -- 5.6.8 Oxidative Dehydrogenation of Propane -- 5.6.9 Chemical Reactivity of Reducible Oxides -- 5.6.10 Selective Catalytic Reduction of NO with NH(3) -- 5.6.11 Oxidation by Non-Reducible Oxides -- 5.7 Heterogeneous Sulfide Catalysts -- 5.7.1 Introduction -- 5.7.2 The Sulfide Surface -- 5.7.3 Promoted Sulfide Catalysts -- 5.8 Summary -- 6 Mechanisms for Aqueous Phase Heterogeneous Catalysis and Electrocatalysis. A Comparison with Heterogeneous Catalytic Reactions -- 6.1 General Introduction -- 6.2 The Chemistry of Water on Transition-Metal Surfaces -- 6.2.1 Reactions in Solutions -- 6.2.2 The Adsorption of Water on Metal Surfaces -- 6.2.3 Influence of Potential -- 6.2.4 Electrochemical Activation of Water -- 6.3 The Synthesis of Vinyl Acetate via the Acetoxylation of Ethylene -- 6.3.1 Homogeneous Catalyzed Vinyl Acetate Synthesis -- 6.3.2 Elementary Reaction Steps of Vinyl Acetate in the Liquid Phase -- 6.3.3 VAM Synthesis: Homogeneous or Heterogeneous? -- 6.4 Low-Temperature Ammonia Oxidation. , 6.4.1 Ammonia Oxidation with Pt(2+) Ion-Exchanged Zeolite Catalysts -- Catalysis Through Coordination Chemistry -- 6.4.2 Electrocatalytic NH(3) Oxidation -- 6.5 Electrochemical NO Reducton -- 6.6 Electrocatalytic Oxidation of CO -- 6.7 Summary -- Addendum: The Tafel Slope and Reaction Mechanism in Electrocatalysis -- 7 Mechanisms in Biocatalysis -- Relationship with Chemocatalysis -- 7.1 General Introduction -- 7.2 The Mechanism of Enzyme Action -- the Induced Fit Model -- 7.3 ATP-Synthase Mechanism -- a Rotating Carousel with Multiple Catalytic Sites -- 7.4 Carbonic Anhydrase -- 7.5 Biomimicking of Enzyme Catalysis -- 7.6 Bio-Electrocatalytic and Chemocatalytic Reduction Reactions -- 7.6.1 Oxidation Catalysis -- 7.7 Reduction Catalysis -- 7.8 Enzyme Mechanistic Action Summarized -- 8 Self Organization and Self Assembly of Catalytic Systems -- 8.1 General Introduction -- 8.2 Self Repair in Chemocatalysis -- 8.3 Synchronization of Reaction Centers -- 8.4 The Physical Chemistry of Self Organization -- 8.5 Size Dependence and Cooperative Behavior -- 8.6 Immunoresponse and Evolutionary Catalysis -- 8.7 Inorganic Self Assembly Processes -- Zeolite Synthesis -- 8.7.1 General Aspects -- 8.7.2 Mechanism of Zeolite Synthesis -- 8.8 Evolutionary Computational Methods -- 8.9 Summary -- 9 Heterogeneous Catalysis and the Origin of Life, Biomineralization -- 9.1 General Introduction -- 9.2 The Origin of Chirality -- 9.3 Artificial Catalytic Chemistry -- 9.3.1 Graded Autocatalysis Replication Domain Model -- 9.4 Control Parameters and the Emergence of Artificial Life -- 9.4.1 The Logistic Map -- 9.4.2 Life at the Edge of Chaos -- 9.5 Different Levels of Self Organization in Catalysis -- a Summary -- 9.6 Biomineralization, the Synthesis of Mesoporous Silicas -- 9.6.1 Biomimetic Approaches for Amorphous Silica Synthesis. , 9.6.2 Micro-Emulsion Mediated Silica Formatiom -- 9.7 Aging of Silica Gels -- 9.7.1 Silica Gel Synthesis -- 9.7.2 Fractals -- 9.7.3 Simulation of Aggregation Processes -- 9.8 Expressions for Aging of Fractal Systems -- 9.9 In Conclusion -- Self Organization and Self Assembly -- 10 Postscript -- Appendices: Computational Methods -- Introduction -- A: ELECTRONIC STRUCTURE METHODS -- B: ATOMIC/MOLECULAR SIMULATION -- C: SIMULATING KINETICS -- Index.
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  • 3
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry research 34 (1995), S. 1166-1171 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 2181-2186 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In this time-resolved study of vibrational dynamics of deuterated surface hydroxyls at acid sites in the zeolite Mordenite, we investigate the O–D T1 vibrational lifetime and transient band shifts. It is shown that after infrared excitation of the stretching mode of a surface hydroxyl, the excess energy is rapidly distributed over delocalized low-energy lattice modes upon de-excitation. This is asserted from the observation that nonexcited hydroxyls are perturbed by the relaxation of their excited counterparts immediately after this relaxation. This observation can be made owing to better resolution in transient transmission spectroscopy obtained by deuteration of the surface hydroxyls. This assignment allows for accurate estimates of lattice temperatures after relaxation of the vibration. Further, from the observation that the vibrational lifetime is dependent on frequency (increasing from 25 to 70 ps with increasing frequency), it is concluded that the deuterated acidic protons are hydrogen bonded to lattice oxygen atoms in the zeolite. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 98 (1994), S. 7056-7062 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 96 (1992), S. 1540-1542 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 105 (1996), S. 3431-3442 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: With infrared transient hole-burning spectroscopy we have investigated the influence of OD⋅⋅⋅X hydrogen bonds on the vibrational line shape of O–D stretch vibrations in acid zeolites. The effect of hydrogen bonding on the line shape depends critically on the type of hydrogen bond. For hydrogen bonding in a rigid structure, the hydrogen bond determines the inhomogeneous linewidth, but the homogeneous linewidth is determined by coupling to a ∼200 cm−1 lattice mode as concluded from the temperature dependence of the dephasing rate. When the hydrogen bond is formed with an adsorbing molecule, the coupling between the high-frequency O–D stretch vibration and the low-frequency OD⋅⋅⋅X hydrogen-bond stretching mode does determine the homogeneous linewidth. The difference between the two systems can be explained by the different hydrogen-bond potentials. Variation of the adsorbate provides a means of obtaining conclusive information on the coupling mechanism between the high-frequency O–D stretching mode and the low-frequency OD⋅⋅⋅X hydrogen-bond stretching mode. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Density Functional Theory (DFT) is utilized to compute field-dependent binding energies and intramolecular vibrational frequencies for carbon monoxide and nitric oxide chemisorbed on five hexagonal Pt-group metal surfaces, Pt, Ir, Pd, Rh, and Ru. The results are compared with corresponding binding geometries and vibrational frequencies obtained chiefly from infrared spectroscopy in electrochemical and ultrahigh vacuum environments in order to elucidate the broad-based quantum-chemical factors responsible for the observed metal- and potential-dependent surface bonding in these benchmark diatomic chemisorbate systems. The surfaces are modeled chiefly as 13-atom metal clusters in a variable external field, enabling examination of potential-dependent CO and NO bonding at low coverages in atop and threefold-hollow geometries. The calculated trends in the CO binding-site preferences are in accordance with spectral data: Pt and Rh switch from atop to multifold coordination at negative fields, whereas Ir and Ru exhibit uniformly atop, and Pd hollow-site binding, throughout the experimentally accessible interfacial fields. These trends are analyzed with reference to metal d-band parameters by decomposing the field-dependent DFT binding energies into steric (electrostatic plus Pauli) repulsion, and donation and back-donation orbital components. The increasing tendency towards multifold CO coordination seen at more negative fields is due primarily to enhanced back-donation. The decreasing propensity for atop vs multifold CO binding seen in moving from the lower-left to the upper-right Periodic corner of the Pt-group elements is due to the combined effects of weaker donation, stronger back-donation, and weaker steric repulsion. The uniformly hollow-site binding seen for NO arises from markedly stronger back-donation and weaker donation than for CO. The metal-dependent zero-field DFT vibrational frequencies are in uniformly good agreement with experiment; a semiquantitative concordance is found between the DFT and experimental frequency-field ("Stark-tuning") slopes. Decomposition of the DFT bond frequencies shows that the redshifts observed upon chemisorption are due to donation as well as back-donation interactions; the metal-dependent trends, however, are due to a combination of several factors. While the observed positive Stark-tuning slopes are due predominantly to field-dependent back-donation, their observed sensitivity to the binding site and metal again reflect the interplay of several interaction components. © 2000 American Institute of Physics.
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 114 (1992), S. 7272-7278 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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