Download or read book Characterization and Catalyst Development written by Steven A. Bradley and published by . This book was released on 1989 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This "must-have" volume bridges the gap between catalysis science and development. It is targeted toward the catalyst scientist who needs to understand the characterization techniques as they apply to catalysts, and toward the instrumentalists who must recognize the characterization requirements of the catalyst scientist. It is the first volume to demonstrate the integrative approach for developing new catalysts, improving processes, and understanding catalysis science.

Download or read book Principles of Catalyst Development written by James T. Richardson and published by Springer. This book was released on 2013-12-21 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Successful industrial heterogeneous catalysts fulfill several key require ments: in addition to high catalytic activity for the desired reaction, with high selectivity where appropriate, they also have an acceptable commercial life and are rugged enough for transportation and charging into plant reactors. Additional requirements include the need to come online smoothly in a short time and reproducible manufacturing procedures that involve convenient processes at acceptable cost. The development of heterogeneous catalysts that meet these (often mutually exclusive) demands is far from straightforward, and in addition much of the actual manufacturing tech nology is kept secret for commercial reasons-thus there is no modern text that deals with the whole of this important subject. Principles of Catalyst Development, which deals comprehensively with the design, development, and manufacture of practical heterogeneous catalysts, is therefore especially valuable in meeting the long-standing needs of both industrialists and academics. As one who has worked extensively on a variety of catalyst development problems in both industry and academia, James T. Richardson is well placed to write an authoritative book covering both the theory and the practice of catalyst development. Much of the material contained in this book had its origin in a series of widely acclaimed lectures, attended mainly by industrial researchers, given over many years in the United States and Europe. All those in industry who work with catalysts, both beginners and those of considerable experience, should find this volume an essential guide.

Download or read book Catalyst Development and Characterization Through Gas phase Nanoparticle Synthesis in Situ X ray Absorption Spectroscopy and Machine Learning written by Brenna Marie Gibbons and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The shift towards a more sustainable energy economy is one of the imperative challenges facing humanity today, and balancing prosperity against the risks of irrevocable climate change will require policy adjustments and scientific innovations on a global scale. In particular, it is essential to move away from burning fossil fuels to meet our energy needs; rising atmospheric CO2 has already contributed to ocean acidification and record high temperatures, and the dangers only increase with every ton of CO2 emitted. Fortunately, wind and solar radiation provide vast resources for renewable energy, and remarkable progress has been made in the past several years towards incorporating these sources. As the use of renewable energy generation rises, so too does the need for efficient energy storage and conversion that are not predicated on the use of fossil fuels. Electrochemistry offers one piece of the solution through fuel cells, batteries, and other technologies. The drive to discover and refine catalysts for these electrochemical reactions is therefore of critical importance to our shared sustainable energy future. Catalyst design has benefited from the close integration of experiment and theory in a cyclical framework whereby new materials are synthesized, characterized, tested for electrochemical performance, and used to improve predictions for future catalysts. A similar framework is used in this dissertation as we delve into each part of the catalyst development cycle. We begin with materials synthesis of nanoparticles, which are of scientific interest for their unique properties compared to bulk materials. Inert gas condensation is introduced as a method for nanoparticle synthesis, and we present several systems including NiFe, Mn oxides, and other transition metals. We observe several unusual morphologies, including cubic particles and the alignment of particles on surface defects. In addition, we study catalytic activity for the oxygen evolution reaction (OER) on both NiFe of varying sizes and Mn oxide promoted with Au. We demonstrate that inert gas condensation is a highly versatile method for synthesizing nanoparticles both for fundamental studies and as electrochemical catalysts. We then focus on the details of one specific catalyst: CuAg for the oxygen reduction reaction (ORR). The ORR is a key component of fuel cells and metal-air batteries, and developing efficient and cost-effective catalysts for this reaction will entail improving our understanding of catalyst activity. We find that CuAg nanoparticles outperform either Cu or Ag nanoparticles, and that they are on par with thin films of similar compositions. To elucidate the origin of this heightened activity we use a combination of density functional theory (DFT) and in situ characterization. X-ray absorption spectroscopy (XAS) allows us to follow the electronic state of our catalyst under reaction conditions, and while we see little change in the electronic or geometric state of the Ag atoms in CuAg, the Cu atoms in CuAg are markedly different than in pure Cu. DFT predicted that Cu atoms in a Ag lattice would have dramatically different d-band states and a smaller oxygen binding energy, and our in situ experiments confirmed that Cu atoms in CuAg are more reduced than in Cu at ORR-relevant potentials. CuAg is revealed to owe its enhanced activity not to a small change in Ag, the more active metal alone, but to a substantial modification of Cu that boosts the overall performance. We hope that better understanding this system will contribute to the design of highly active non-precious catalysts for the ORR. Traditionally new catalysts for a reaction are chosen based on a combination of conventional theory calculations such as DFT and educated guesswork informed by scientific insight. However the vast search space of possible catalyst materials and the wealth of computational and experimental data for reactions studied over decades opens the possibility to use machine learning to speed the iterative design process. In the final portion of this work we consider the application of machine learning to case studies in both computational and experimental materials science. To start, we examine several algorithms for predicting metallic glasses on ternary alloys from a historical dataset based on their compositions alone. Using the two best models, we then investigate combining sparse historical data with new high-throughput data and find that more data is not always better. On the other hand, materials science encompasses many questions for which the data is much less plentiful. One strategy to maximize the value of small datasets is transfer learning, in which the outputs of one model inform subsequent models. We apply transfer learning to experimental Ni superalloy mechanical properties and nitric oxide reduction reaction computational data, and we determine that in both cases transfer learning is an effective way to improve model accuracy without collecting new data. In summary, this dissertation explores each step of the catalyst development cycle, from nanoparticle synthesis, to electrochemical testing, advanced in situ characterization, and predicting new materials via machine learning. This work aims to present fundamental insights on catalytic activity as well as several avenues for future catalyst development with the goal of contributing to a more efficient energy future.

Download or read book Characterization and Catalyst Development An Interactive Approach A Symposium at the 196 National Meeting of the American Chemical Society Los Angeles Cal September 25 30 1988 Ed Steven A Bradley Mark J Gattuso Ralph J Bertolacini written by and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Zeolite Characterization and Catalysis written by Arthur W. Chester and published by Springer Science & Business Media. This book was released on 2009-10-03 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: The idea for putting together a tutorial on zeolites came originally from my co-editor, Eric Derouane, about 5 years ago. I ?rst met Eric in the mid-1980s when he spent 2 years working for Mobil R&D at our then Corporate lab at Princeton, NJ. He was on the senior technical staff with projects in the synthesis and characterization of new materials. At that time, I managed a group at our Paulsboro lab that was responsible for catalyst characterization in support of our catalyst and process development efforts, and also had a substantial group working on new material synthesis. Hence, our interests overlapped considerably and we met regularly. After Eric moved back to Namur (initially), we maintained contact, and in the 1990s, we met a number of times in Europe on projects of joint interest. It was after I retired from ExxonMobil in 2002 that we began to discuss the tutorial concept seriously. Eric had (semi-)retired and lived on the Algarve, the southern coast of Portugal. In January 2003, my wife and I spent 3 weeks outside of Lagos, and I worked parts of most days with Eric on the proposed content of the book. We decided on a comprehensive approach that ultimately amounted to some 20+ chapters covering all of zeolite chemistry and catalysis and gave it the title Zeolite Chemistry and Catalysis: An integrated Approach and Tutorial.

Download or read book Characterization and Catalyst Development An Interactive Approach Developed from a symposium sponsored by the Division of Petroleum Chemistry and by the D 32 Committee of ASTM at the 196th National Meeting of the American Chemical Society in Los Angeles CA September 25 30 1988 written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Catalytic Materials written by Israel E. Wachs and published by Momentum Press. This book was released on 2010 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous catalysis has undergone a revolutionary change in the past two decades due to the development of sophisticated characterization methods that provide fundamental information about the catalyst bulk structures, surfaces, and their properties. For the first time, these characterization methods have allowed researchers to "see" the surfaces of catalytic materials, their bulk structures (crystalline as well as amorphous phases), the influence of the process conditions on the catalytic material, as well as the effect of different synthesis methods. This new information has tremendously advanced our understanding of catalytic materials and their properties. These characterization methods have become our "eyes" and are indispensible in the development of new catalytic materials. It is hard to conceive of a modern heterogeneous catalysis activity, be it research or manufacturing, without the aid of these new characterization techniques.

Download or read book Catalyst Characterization Science written by Marvin L. Deviney and published by . This book was released on 1985 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights the rapid evolution of the surface science of catalysts. Focuses on multi-technique strategies for studying catalytic reactions and catalytic materials. Discusses new developments in electron microscopy, laser-induced desorption, magnetic methods, and new vibrational characterization techniques.

Download or read book NREL S Capabilities in Catalyst Development and Characterization written by and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Thermal and Catalytic Process Development Unit at NREL has state-of-the-art equipment for thermochemical process development and testing, ranging from catalyst and feedstock characterizations to bench-scale reactors to pilot plants. Within this facility is the capability to understand structure-performance relationships for advanced catalytic materials to enable improved carbon yield and reduced costs for the targeted conversion of renewable feedstocks. This fact sheet summarizes the core capabilities and applications.

Download or read book Modern Applications of High Throughput R D in Heterogeneous Catalysis written by Alfred Hagemeyer and published by Bentham Science Publishers. This book was released on 2014-04-04 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook covers the application of high-throughput R&D to both fundamental and applied catalysis including catalyst synthesis, characterization, and testing in various reactor types. Chapters include topics such as applications ranging from optimizations of established industrial catalysts to the discovery of innovative new materials, examples of the development of innovative parallel characterization methods, and cases of real catalyst testing in small scale reactor systems. Readers will also find chapters that cover commodity chemicals produced using continuous gas phase processes as well as fine chemicals produced in liquid phase batch reactors. The potential of industrial chemicals production from biorenewable feedstocks is also presented. The steadily improving high throughput workflows are today being applied to relevant reactions and targets such as hydrotreating, Deacon oxidation, Fischer-Tropsch, propane dehydrogenation, C4 oxidation, methane coupling, exhaust gas catalysis, bio-based Nylon, fuel cells and vitamins. The topics presented in this eBook have been contributed by researchers from academia as well as industry, making this eBook a well-balanced reference, which could be of particular interest to professional, industrial or service R&D labs.

Download or read book Catalysis for the Production of Sustainable Fuels and Chemicals written by Flora T. T. Ng and published by MDPI. This book was released on 2020-12-29 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis, in the industrial production of chemicals, fuels, and materials, accounts for more than half of gross material production worldwide. Heterogeneous catalysis enables fast and selective chemical transformations, resulting in superior product yield and facilitating catalyst separation and recovery. The synthesis of novel catalysts has emerged as a hot topic for process and product development with numerous research publications and patents. Hence, development of efficient catalysts and their applications is important for sustainable energy production and use, green chemicals production and use, and economic growth. This Special Issue discusses recent developments related to catalysis for the production of sustainable fuels and chemicals and traverses many new frontiers of catalysis including synthesis, characterization, catalytic performances, reaction kinetics and modelling, as well as applications of catalysts for the production of biofuels, synthesis gas, and other green products. This covers the current state-of-the-art catalysis research applied to bioenergy, organic transformation, carbon–carbon and carbon–heteroatoms, reforming, hydrogenation, hydrodesulfurization, hydrodenitrogenation, hydrodemetalization, Fischer–Tropsch synthesis, to name a few. This book highlights new avenues in catalysis including catalyst preparation methods, analytical tools for catalyst characterization, and techno-economic assessment to enhance a chemical or biological transformation process using catalysts for a betterment of industry, academia and society.

Download or read book Catalyst Characterization Science written by Marvin L. Deviney and published by . This book was released on with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights the rapid evolution of the surface science of catalysts. Focuses on multi-technique strategies for studying catalytic reactions and catalytic materials. Discusses new developments in electron microscopy, laser-induced desorption, magnetic methods, and new vibrationalcharacterization techniques.

Download or read book Combinatorial Development of Solid Catalytic Materials written by Manfred Baerns and published by World Scientific. This book was released on 2009 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a comprehensive treatment of combinatorial development of heterogeneous catalysts. In particular, two computer-aided approaches that have played a key role in combinatorial catalysis and high-throughput experimentation during the last decade OCo evolutionary optimization and artificial neural networks OCo are described. The book is unique in that it describes evolutionary optimization in a broader context of methods of searching for optimal catalytic materials, including statistical design of experiments, as well as presents neural networks in a broader context of data analysis. It is the first book that demystifies the attractiveness of artificial neural networks, explaining its rational fundamental OCo their universal approximation capability. At the same time, it shows the limitations of that capability and describes two methods for how it can be improved. The book is also the first that presents two other important topics pertaining to evolutionary optimization and artificial neural networks: automatic generating of problem-tailored genetic algorithms, and tuning evolutionary algorithms with neural networks. Both are not only theoretically explained, but also well illustrated through detailed case studies. Sample Chapter(s). Chapter 1: Background of Combinatorial Catalyst Development (63 KB). Contents: Background of Combinatorial Catalyst Development (M Baerns); Approaches in the Development of Heterogeneous Catalysts (M Baerns); Mathematical Methods of Searching for Optimal Catalytic Materials (M Holena); Generating Problem-Tailored Genetic Algorithms for Catalyst Search (M Holena); Analysis and Mining of Data Collected in Catalytic Experiments (M Holena); Artificial Neural Networks in the Development of Catalytic Materials (M Holena); Tunning Evolutionary Algorithms with Artificial Neural Networks (M Holena); Improving Neural Network Approximations (M Holena); Applications of Combinatorial Catalyst Development and An Outlook on Future Work (M Baerns). Readership: Chemists and chemical engineers from academia and industry working in catalysis; materials scientists; graduate students dealing with catalytic chemistry interested in computer-aided methods.

Download or read book Heterogeneous Catalysis for Today s Challenges written by Brian Trewyn and published by Royal Society of Chemistry. This book was released on 2015-06-22 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest research in the field of heterogeneous catalysis. Heterogeneous catalysis and homogeneous catalysis are important factors in increasing the development of green chemistry. Some of the challenges that we are responsible for are directing research efforts toward increasing the kinetics of heterogeneous catalysis to homogeneous catalysis levels, improving the recyclability of the catalysts, and developing new supports that can act as catalysts or cocatalysts. Following reaction kinetics and mechanisms on supported catalysts provides the degree of precision and accuracy already enjoyed by the homogeneous catalysis community. The editors present an easily-accessible digest for researchers and a reference aimed at offering guidance to new researchers in the field.

Download or read book Handbook of Spent Hydroprocessing Catalysts written by Meena Marafi and published by Elsevier. This book was released on 2017-01-18 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Spent Hydroprocessing Catalysts, Second Edition, covers all aspects of spent hydroprocessing catalysts, both regenerable and non-regenerable. It contains detailed information on hazardous characteristics of spent and regenerated catalysts. The information forms a basis for determining processing options to make decisions on whether spent catalysts can be either reused on refinery site after regeneration or used as the source of new materials. For non-regenerable spent catalysts, attention is paid to safety and ecological implications of utilizing landfill and other waste handling and storage options to ensure environmental acceptance. As such, this handbook can be used as a benchmark document to develop threshold limits of regulated species. - Includes experimental results and testing protocols which serve as a basis for the development of methodologies for the characterization of solid wastes - Presents a database which assists researchers in selecting/designing research projects on spent catalysts, i.e., regeneration vs. rejuvenation and metal reclamation - Provides the environmental laws, acts, and liabilities to raise awareness in safety and health issues in all aspects of spent catalysts - Contains solid waste management procedures specific to hydroprocessing that serve as a model for designing research projects in other solid waste areas

Download or read book Catalyst Development and Control of Catalyst Deactivation for Carbon Dioxide Conversion written by Hope O. Otor and published by . This book was released on 2020 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anthropogenic emissions of CO2 from industrial processes are considered the major cause of global warming and ocean acidification. To this end, different abatement strategies have been sought to capture CO2 directly from various effluent sources. Carbon capture and sequestration (CCS) have been touted to solve this problem; however, due to the challenges associated with this approach, research efforts have been focused on the development of Dual Function Materials (DFMs) that can effectively capture and convert CO2 to value-added products. To effectively develop a DFM, it is necessary to produce a highly active and stable catalytic material first. The first part of this thesis focuses on the synthesis and characterization of a highly dispersed inverse CeOx-Cu/SiO2 catalyst. Characterization techniques, such as X-ray photoelectron spectroscopy (XPS), N2O chemisorption, and scanning transmission electron microscopy (STEM) analysis revealed effective ceria deposition over the SiO2-supported Cu nanoparticles, which is intended to create a high number of interfacial sites active for the synthesis of methanol from CO2. As Cu catalysts are prone to deactivation, the second part of this thesis is focused on the development of a wet chemical method for encapsulation of the catalyst for control of its deactivation. The alumina overcoating layer proved to be successful in improving the stability of the Cu catalyst under liquid and gas phase conditions.

Download or read book Principles and Methods for Accelerated Catalyst Design and Testing written by E.G. Derouane and published by Springer Science & Business Media. This book was released on 2002-07-31 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pace of development in the chemical industry is increasing steadily, bringing with it a corresponding need to develop catalysts as rapidly as possible. High throughput experimentation has had great success in drug design but hitherto it has scarcely been used in the catalysis field. There is thus a need to make the underlying principles of this methodology more widely understood, in a coherent, integrated format. The present book fulfils such a need as it delineates and consolidates the principles and methods underlying accelerated catalyst design and testing. The main challenges for progress in the field are also identified. An indispensable book for all those working in catalytic process analysis and development, in industry and the academic laboratory. Contains an extensive review of catalytic principles, making the book also suitable for postgraduate students seeking to pursue a career in the catalysis field.