Download or read book Advanced Strategies for Catalyst Design written by Laura Orian and published by MDPI. This book was released on 2021-04-21 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The invention of novel and improved catalysts has a valuable impact on human activities and on our planet. Efficient catalysts are expected to be stable, active, and selective. In the past, the development of new catalysts has mainly depended on trial and error, a laborious and time-consuming approach. Nowadays, the mechanistic details of numerous important chemical reactions have been unraveled, and this information is useful for intelligently design novel catalysts. Thus, all the efforts devoted to facilitating a deep understanding of intricate catalytic mechanisms and to the preparation of novel catalysts relying on this are priceless. Chemists must set up adequate strategies, merging experimental and computational knowledge and abilities toward tuning the performance of molecules that might be successful in the lab. The contributions in this book collection are some examples of this modern chemical design.
Download or read book Advances In Catalyst Design Vol 2 Proceedings Of The 2nd Workshop On Catalyst Design written by Mauro Graziani and published by World Scientific. This book was released on 1993-09-30 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop organized by the international centre for science and technology provided an occasion for researchers active both in homogeneous and heterogeneous catalysis to meet and look for common interpretations and a common language.
Download or read book Heterogeneous Catalysts written by Wey Yang Teoh and published by John Wiley & Sons. This book was released on 2021-02-23 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents state-of-the-art knowledge of heterogeneous catalysts including new applications in energy and environmental fields This book focuses on emerging techniques in heterogeneous catalysis, from new methodology for catalysts design and synthesis, surface studies and operando spectroscopies, ab initio techniques, to critical catalytic systems as relevant to energy and the environment. It provides the vision of addressing the foreseeable knowledge gap unfilled by classical knowledge in the field. Heterogeneous Catalysts: Advanced Design, Characterization and Applications begins with an overview on the evolution in catalysts synthesis and introduces readers to facets engineering on catalysts; electrochemical synthesis of nanostructured catalytic thin films; and bandgap engineering of semiconductor photocatalysts. Next, it examines how we are gaining a more precise understanding of catalytic events and materials under working conditions. It covers bridging pressure gap in surface catalytic studies; tomography in catalysts design; and resolving catalyst performance at nanoscale via fluorescence microscopy. Quantum approaches to predicting molecular reactions on catalytic surfaces follows that, along with chapters on Density Functional Theory in heterogeneous catalysis; first principles simulation of electrified interfaces in electrochemistry; and high-throughput computational design of novel catalytic materials. The book also discusses embracing the energy and environmental challenges of the 21st century through heterogeneous catalysis and much more. Presents recent developments in heterogeneous catalysis with emphasis on new fundamentals and emerging techniques Offers a comprehensive look at the important aspects of heterogeneous catalysis Provides an applications-oriented, bottoms-up approach to a high-interest subject that plays a vital role in industry and is widely applied in areas related to energy and environment Heterogeneous Catalysts: Advanced Design, Characterization and Applications is an important book for catalytic chemists, materials scientists, surface chemists, physical chemists, inorganic chemists, chemical engineers, and other professionals working in the chemical industry.
Download or read book Computational Strategy in Catalyst Design written by Robert Jeffrey Nielsen and published by . This book was released on 2005 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computer Aided Design of Catalysts written by Robert Becker and published by CRC Press. This book was released on 2020-08-18 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides an update on recent developments in computer-aided design and modeling of catalysts for a variety of important industrial applications. Key hurdles in catalyst design are different for each application: the modeling frontiers for methane partial oxidation, automotive catalysis,
Download or read book Catalyst Design written by L. Louis Hegedus and published by Wiley-Interscience. This book was released on 1987-05-13 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative volume on the design and preparation of catalysts. The book covers surface morphology, organometallics, supports, kinetics, mathematical modelling and hydrometallation catalysts.
Download or read book Heterogeneous Catalyst Design and Synthesis with Controlled and Well defined Strategies written by Lifeng Zhang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design and synthesis of heterogeneous catalyst at precisely atomic level is of great importance in chemical industry. Current state-of-art synthesis techniques generally lead to a wide distribution of particle sizes and composition, which results in a mixture of active sites over the surface and thus poor catalytic performance. Atomic layer deposition(ALD) has gained attentions in application of catalysis due to its self-limiting nature. In this work, we will apply this advanced synthesis technology to a series of industrially important reactions, such as synthesis gas conversion, hydrocarbon cracking, biomass conversion, and ethane aromatization. Chapter 3 and Chapter 4 focus on generating high surface area catalytic support via ALD for other transition metals, including Rh, Ru, Co, Ni, and Cu for synthesis gas conversion. The conformity coating of ALD enables us to produce unconventional high surface area support that cannot be achieved using other synthesis techniques. Chapter 5 introduces how ALD is used to produce model heterogeneous acid catalysts with tunable Bronsted to Lewis acid sites ratio. The model materials are useful in both revealing the structure of commercial SiAl materials and elucidating reaction mechanism of biomass conversion reactions. Chapter 6 demonstrates the advantage of ALD to directly deposit catalytic active species inside various confined spaces, including meso-porous and micro-porous materials. This is not achievable via conventional synthesis method. These sites will fully benefit from the non-covalent regent-host interactions and display superior catalytic performance than those sites at the outer surface of the support with no confinement effect. Overall, atomic layer deposition is applied in multiple ways to produce high performance heterogeneous catalysts in this work.
Download or read book Catalyst Design written by Massimo Morbidelli and published by Cambridge University Press. This book was released on 2001-02-26 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thorough treatment of the design, preparation, and utilization of catalytic systems for optimal performance.
Download or read book FCC Catalyst Design Strategies for Reformulated Gasoline written by Adrian Humphries and published by . This book was released on 2000 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Directions in Catalyst Design and Interrogation written by Johanna M. Blacquiere and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A major driving force for development of new catalyst systems is the need for more efficient synthesis of chemical compounds essential to modern life. Catalysts having superior performance offer significant environmental and economic advantages, but their discovery is not trivial. Well-defined, homogeneous catalysts can offer unparalleled understanding of ligand effects, which proves invaluable in directing redesign strategies. This thesis work focuses on the design of ruthenium complexes for applications in dinitrogen activation and olefin metathesis. The complexes developed create new directions in small-molecule activation and asymmetric catalysis by late-metal complexes. Also examined are the dual challenges, ubiquitous in catalysis, of adequate interrogation of catalyst structure and performance. Insight into both is essential to enable correlation of ligand properties with catalyst activity and/or selectivity. Improved methods for accelerated assessment of catalyst performance are described, which expand high-throughput catalyst screening to encompass parallel acquisition of kinetic data. A final aspect focuses on direct examination of metal complexes, both as isolated species, and under catalytic conditions. Applications of charge-transfer MALDI mass spectrometry to structural elucidation in organometallic chemistry is described, and the technique is employed to gain insight into catalyst decomposition pathways under operating conditions.
Download or read book Highly Fluorinated Catalysts and Compounds written by Markus Jurisch and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Catalyst Design for High Ethylene Production and Maximized Cycle Lengths written by Blaise Didillon and published by . This book was released on 1995 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Functional Solid Catalysts for Biomass Valorization written by Chaudhery Mustansar Hussain and published by Elsevier. This book was released on 2020-05-29 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Functional Solid Catalysts for Biomass Valorization presents the basic concepts in catalysis (homogeneous, heterogeneous, and enzymatic) and the properties of various kinds of heterogeneous solid catalysts, including their structure, porosity, particle size, BET surface area, acid-base, and redox properties. Useful information about biorefineries, types of biomass feedstocks, their structures and properties as well as about several potential catalytic routes for biomass upgrading to useful fuels and chemicals is provided in this book. Importantly, this book covers the most recent developments toward functionalization of various solid catalysts, optimization of catalysts' properties, developing cascade catalytic strategies, exploring reaction kinetics/mechanisms, and evaluating catalysts' stability/reusability during biomass upgrading. Current challenges and opportunities for the future biorefineries as well as for the design of advanced functional solid catalysts are critically discussed. - Describes catalysis as a promising technology for the development of eco-friendly and economically viable strategies for several important energy and environmental applications. - Covers heterogeneous solid catalysts because of their versatile benefits in terms of catalysts' synthesis, production cost, stability, and reusability as compared to homogeneous liquid catalysts. - Provides promising strategies for the design of new catalytic materials, such as carbon materials, metal–organic frameworks, zeolites, and mesoporous silicas. - Describes functional solid catalysts for developing one-pot cascade processes for efficient biomass valorization and other vital chemical transformations.
Download or read book Advanced Catalysts Design Towards Overall Water Splitting written by Cong Li and published by . This book was released on 2020 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamental Understanding and Atomic Scale Design of Novel Catalysts for Efficient Electrochemical Reactions written by Qiaowan Chang and published by . This book was released on 2021 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability of renewable energy sources (solar and wind) provides opportunities to replace many traditional chemical reactions by the electrochemical processes to achieve industrial upgrading, including direct ethanol fuel cells (DEFCs), hydrogen peroxide (H2O2) production, and carbon dioxide (CO2) conversion. However, the rates of many important reactions involved in electrochemical processes are too slow and the selectivity of targeted products also needs to be improved. The key to solve these challenges is to design better electrocatalysts. In this thesis, some strategies to design advanced electrocatalysts are investigated. The first strategy is to control the morphology and surface composition of the Platinum (Pt) nanocube-based electrocatalyst in DEFCs to selectively cleave the C-C bond in ethanol to improve its energy utilization. The (100)-exposed Pt38Ir nanocubes with one-atom-thick Ir-rich skin exhibited unprecedented EOR activity, high CO2 selectivity and long-term stability, due to the promotion of C-C bond cleavage and CO desorption from the catalyst surface. Furthermore, we show that the complete oxidization of ethanol to CO2 was achieved by the Rh single atom on the Pt(100) surface, demonstrating the great potential of the decoration of single atom catalysts on the metallic surface in electrochemical reactions. The second example is to tune the local chemical coordination between atomic catalyst clusters (metal) and their support materials (defect carbons) using a composite approach to achieve the synergistic effect in H2O2 electrochemical production. A catalyst composed of oxidized carbon nanotubes and clusters of three to four partially oxidized palladium (Pd) atoms was prepared, forming a special coordination (Pd-O-C) between carbon material and partially oxidized Pd atoms. This coordination can significantly enhance its H2O2 production rate with > 90% selectivity and shorten the production time. The third strategy is to control the intermediate state of catalyst to promote CO2 reduction. In previous studies, Pd was found to transform into palladium hydride (PdH) during the reaction and the latter was believed to be beneficial for syngas production. Based on this finding, the electrocatalyst was directly designed to partially hydridize Pd nanocubes. In comparison with pure metallic Pd, partial hydridization of Pd structure (PdH0.40) showed an earlier transformation to the key intermediate, leading to enhanced syngas production. As a result, the suitable operation potential range can be extended, resulting in a more flexible working condition for potential industrial applications. Overall, the above three strategies for designing electrocatalysts are explored in this thesis work. The results will provide fundamental understanding and guidance for rational design of highly efficient electrocatalysts for crucial electrochemical reactions, getting one step closer to the industrial applications related to sustainable and green chemical engineering.
Download or read book High Throughput Screening in Chemical Catalysis written by Alfred Hagemeyer and published by Wiley-VCH. This book was released on 2004-10-25 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first comprehensive book on heterogeneous catalysis provides an up-to-date overview of the current status and advances being made in this rapidly growing field. The authors from both academia and industry apply HTS to the discovery and optimization of complex multi-component heterogeneous catalysts and electrocatalysts, while also analyzing its capabilities and limitations. They also include CombiCatalysis, screening and optimization strategies, as well as aspects of electrocatalysis, and make use of various industrial methodologies, such as those of Avantium, H.T.E., Symyx, Sintef and IMM, to demonstrate the various approaches to overcoming the challenges of miniaturization. The text is supported throughout by numerous tables, illustrations, graphs, and photographs of synthesis and reactor equipment, most of them in color. For advanced students, catalytic or solid-state chemists in R&D and engineers specializing in reactor technology, detection schemes and automation.
Download or read book Metathesis Chemistry written by Yavuz Imamoglu and published by Springer Science & Business Media. This book was released on 2007-07-04 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover why olefin metathesis has asserted itself as a powerful strategy for obtaining fine chemicals, biologically active compounds, architecturally complex assemblies, new materials, and functionalized polymers. This volume compiles all the latest trends in olefin metathesis. In particular, you’ll learn how olefin metathesis has growing potential for the development of sustainable technologies with many possible industrial applications.
