Dynamic Heterogeneous Catalysis

Dynamic Heterogeneous Catalysis PDF Author: Kenji Tamaru
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 168

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Book Description

Dynamic Heterogeneous Catalysis

Dynamic Heterogeneous Catalysis PDF Author: Kenji Tamaru
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 158

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Book Description


Dynamics of Surfaces and Reaction Kinetics in Heterogeneous Catalysis

Dynamics of Surfaces and Reaction Kinetics in Heterogeneous Catalysis PDF Author: G.F. Froment
Publisher: Elsevier
ISBN: 0080530621
Category : Technology & Engineering
Languages : en
Pages : 611

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Book Description
Many processes of the chemical industry are based upon heterogeneous catalysis. Two important items of these processes are the development of the catalyst itself and the design and optimization of the reactor. Both aspects would benefit from rigorous and accurate kinetic modeling, based upon information on the working catalyst gained from classical steady state experimentation, but also from studies using surface science techniques, from quantum chemical calculations providing more insight into possible reaction pathways and from transient experimentation dealing with reactions and reactors. This information is seldom combined into a kinetic model and into a quantitative description of the process. Generally the catalytic aspects are dealt with by chemists and by physicists, while the chemical engineers are called upon for mechanical aspects of the reactor design and its control. The symposium "Dynamics of Surfaces and Reaction Kinetics in Heterogeneous Catalysis" aims at illustrating a more global and concerted approach through a number of prestigious keynote lectures and severely screened oral and poster presentations.

Multiscale Modeling of Traditional and Dynamic Heterogeneous Catalytic Processes

Multiscale Modeling of Traditional and Dynamic Heterogeneous Catalytic Processes PDF Author: Gerhard Robert Wittreich
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
Heterogeneous catalysis is a key element in a global energy strategy that enables a lower energy route for the many chemical reactions essential to food production, fuels, pharmaceuticals, and other essential materials in our everyday lives. Modeling catalytic systems can inform the design of experiments, identify catalyst properties that optimize quantities-of-interest (QoI) for the discovery of new catalysts, and link catalyst properties to commercial reactor design. A comprehensive understanding of these reactions, achieved through multiscale modeling, is a vital step in establishing viable commercial processes. Additionally, a thorough understanding of the key elements comprising an effective model, efficiently and accurately parameterizing the model, and properly understanding and accounting for parametric uncertainty in models are essential for maximizing and quantifying the models' predictive ability.

Plasma Catalysis

Plasma Catalysis PDF Author: Annemie Bogaerts
Publisher: MDPI
ISBN: 3038977500
Category : Technology & Engineering
Languages : en
Pages : 248

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Book Description
Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO2 conversion into value-added chemicals and fuels, N2 fixation for the synthesis of NH3 or NOx, methane conversion into higher hydrocarbons or oxygenates. It is also widely used for air pollution control (e.g., VOC remediation). Plasma catalysis allows thermodynamically difficult reactions to proceed at ambient pressure and temperature, due to activation of the gas molecules by energetic electrons created in the plasma. However, plasma is very reactive but not selective, and thus a catalyst is needed to improve the selectivity. In spite of the growing interest in plasma catalysis, the underlying mechanisms of the (possible) synergy between plasma and catalyst are not yet fully understood. Indeed, plasma catalysis is quite complicated, as the plasma will affect the catalyst and vice versa. Moreover, due to the reactive plasma environment, the most suitable catalysts will probably be different from thermal catalysts. More research is needed to better understand the plasma–catalyst interactions, in order to further improve the applications.

Laboratory Studies of Heterogeneous Catalytic Processes

Laboratory Studies of Heterogeneous Catalytic Processes PDF Author: E.G. Christoffel
Publisher: Elsevier
ISBN: 0080887341
Category : Technology & Engineering
Languages : en
Pages : 279

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Book Description
Providing a concise treatment of methods of heterogeneous catalysis used in the laboratory, this book describes the basic phenomena of heterogeneous catalytic reaction systems and discusses in detail the experimental methods and procedures for investigating these systems. The introductory chapter illustrates the whole procedure with an actual example. The next chapter presents the basic phenomena of catalytic systems and the concepts used in studying them. The third chapter covers the description of methods for investigating reaction mechanisms and the dynamics of heterogeneous catalytic reaction systems. The last chapter discusses the design and operation modes of laboratory reactors, frequently used for the investigation of heterogeneous catalytic reactions.The approach is interdisciplinary, providing a balance between chemical engineering and chemical viewpoints of treating laboratory-scale reactors. Chemists and chemical engineers involved in catalyst research will be very interested in this book and it can also be usefully used in specialized courses for graduate students in chemistry or in chemical reaction engineering.

Molecular Heterogeneous Catalysis

Molecular Heterogeneous Catalysis PDF Author: Rutger A. van Santen
Publisher: John Wiley & Sons
ISBN: 3527608346
Category : Science
Languages : en
Pages : 488

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Book Description
An integrated approach to the molecular theory of reaction mechanism in heterogeneous catalysis, largely based on the knowledge among the growing theoretical catalysis community over the past half century, and covering all major catalytic systems. The authors develop a general conceptual framework, including in-depth comparisons with enzyme catalysis, biomineralisation, organometallic and coordination chemistry. A chapter dedicated to molecular electrocatalysis addresses the molecular description of reactions at the liquid-solid interphase, while studies range from a quantum-chemical treatment of individual molecular states to dynamic Monte-Carlo simulations, including the full flexibility of the many-particle systems. Complexity in catalysis is explained in chapters on self-organization and self-assembly of catalysts, and other sections are devoted to evolutionary, combinatorial techniques as well as artificial chemistry.

Modeling and Simulation of Heterogeneous Catalytic Reactions

Modeling and Simulation of Heterogeneous Catalytic Reactions PDF Author: Olaf Deutschmann
Publisher: John Wiley & Sons
ISBN: 3527639888
Category : Science
Languages : en
Pages : 364

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Book Description
The Nobel Prize in Chemistry 2007 awarded to Gerhard Ertl for his groundbreaking studies in surface chemistry highlighted the importance of heterogeneous catalysis not only for modern chemical industry but also for environmental protection. Heterogeneous catalysis is seen as one of the key technologies which could solve the challenges associated with the increasing diversification of raw materials and energy sources. It is the decisive step in most chemical industry processes, a major method of reducing pollutant emissions from mobile sources and is present in fuel cells to produce electricity. The increasing power of computers over the last decades has led to modeling and numerical simulation becoming valuable tools in heterogeneous catalysis. This book covers many aspects, from the state-of-the-art in modeling and simulations of heterogeneous catalytic reactions on a molecular level to heterogeneous catalytic reactions from an engineering perspective. This first book on the topic conveys expert knowledge from surface science to both chemists and engineers interested in heterogeneous catalysis. The well-known and international authors comprehensively present many aspects of the wide bridge between surface science and catalytic technologies, including DFT calculations, reaction dynamics on surfaces, Monte Carlo simulations, heterogeneous reaction rates, reactions in porous media, electro-catalytic reactions, technical reactors, and perspectives of chemical and automobile industry on modeling heterogeneous catalysis. The result is a one-stop reference for theoretical and physical chemists, catalysis researchers, materials scientists, chemical engineers, and chemists in industry who would like to broaden their horizon and get a substantial overview on the different aspects of modeling and simulation of heterogeneous catalytic reactions.

Heterogeneous Catalysis and Reaction Dynamics

Heterogeneous Catalysis and Reaction Dynamics PDF Author: Mason Milburn
Publisher:
ISBN:
Category : Heterogeneous catalysis
Languages : en
Pages : 126

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Fundamental Aspects of Heterogeneous Catalysis Studied by Particle Beams

Fundamental Aspects of Heterogeneous Catalysis Studied by Particle Beams PDF Author: H.H. Brongersma
Publisher: Springer Science & Business Media
ISBN: 1468459643
Category : Science
Languages : en
Pages : 451

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Book Description
Present day heterogeneous catalysis is rapidly being transformed from a technical art into a science-based technology. A major contribution to this important change is the advance of surface spectroscopic techniques able to characterize the complex surfaces of the heterogeneous catalytic system. The Advanced Study Institute (on which the current proceedings is based) has as its primary aim the bringing together of a variety of lecturers, outstanding in those fields of experience, to enable a broad coverage of different relevant approaches. Not only catalyst characterization but also catalytic reactivity had to be covered in order to relate catalyst properties with catalyst performance. Since modern catalysis relates catalytic performance to microscopic molecular catalyst features, theoretical electronic aspects also had to be included. The Advanced Study Institute had a unique feature in that it brought together physicists, catalytic chemists and chemical engineers whom rarely directly interact. From physics especially new experimental possibilities of beams were emphasized. At present it is possible to obtain very detailed information on model catalysts, whilst the applications to practical catalysts are gaining rapidly in sophistication. Apart from the plenary lectures, the Institute included "hot topics" to highlight special developments and offered participants the opportunity to present contributed papers (either orally or as a poster). These contributions formed an integral part of the summer school and significantly enhanced the interaction between participants. Inclusion of the hot topics and contributed papers in these proceedings give them an added topical value.

Fundamental Concepts in Heterogeneous Catalysis

Fundamental Concepts in Heterogeneous Catalysis PDF Author: Jens K. Nørskov
Publisher: John Wiley & Sons
ISBN: 1118888952
Category : Technology & Engineering
Languages : en
Pages : 228

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Book Description
This book is based on a graduate course and suitable as a primer for any newcomer to the field, this book is a detailed introduction to the experimental and computational methods that are used to study how solid surfaces act as catalysts. Features include: First comprehensive description of modern theory of heterogeneous catalysis Basis for understanding and designing experiments in the field Allows reader to understand catalyst design principles Introduction to important elements of energy transformation technology Test driven at Stanford University over several semesters