Download or read book Development of New Catalytic Performance of Nanoporous Metals for Organic Reactions written by Mei Yan and published by Springer Science & Business Media. This book was released on 2014-03-24 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the focus is on the study of new catalytic properties of unsupported nanoporous metals in heterogeneous organic reactions under liquid-phase conditions. The author was the first to fabricate nanoporous copper with tunable nanoporosity and apply it for organic reactions. The catalyst can be reused up to ten times without loss of catalytic activity. In addition, the author developed the highly selective semihydrogenation of alkynes using nanoporous gold as a catalyst for the first time, affording Z-alkenes in 100% selectivity, which cannot be realized by traditional catalysts. All of the results described here will help readers to develop new catalytic performance of nanoporous metals for organic reactions.
Download or read book Nanometal Catalysis in Organic Synthesis written by Ming Bao and published by Springer Nature. This book was released on with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nanoporous Catalysts for Biomass Conversion written by Feng-Shou Xiao and published by John Wiley & Sons. This book was released on 2017-11-06 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive introduction to the design, synthesis, characterization, and catalytic properties of nanoporous catalysts for the biomass conversion With the specter of peak oil demand looming on the horizon, and mounting concerns over the environmental impact of greenhouse gas emissions, biomass has taken on a prominent role as a sustainable alternative fuel source. One critical aspect of the biomass challenge is the development of novel catalytic materials for effective and controllable biomass conversion. Edited by two scientists recognized internationally for their pioneering work in the field, this book focuses on nanoporous catalysts, the most promising class of catalytic materials for the conversion of biomass into fuel and other products. Although various catalysts have been used in the conversion of biomass-derived feedstocks, nanoporous catalysts exhibit high catalytic activities and/or unique product selectivities due to their large surface area, open nanopores, and highly dispersed active sites. This book covers an array of nanoporous catalysts currently in use for biomass conversion, including resins, metal oxides, carbons, mesoporous silicates, polydivinylbenzene, and zeolites. The authors summarize the design, synthesis, characterization and catalytic properties of these nanoporous catalysts for biomass conversions, discussing the features of these catalysts and considering future opportunities for developing more efficient catalysts. Topics covered include: Resins for biomass conversion Supported metal oxides/sulfides for biomass oxidation and hydrogenation Nanoporous metal oxides Ordered mesoporous silica-based catalysts Sulfonated carbon catalysts Porous polydivinylbenzene Aluminosilicate zeolites for bio-oil upgrading Rice straw Hydrogenation for sugar conversion Lignin depolymerization Timely, authoritative, and comprehensive, Nanoporous Catalysts for Biomass Conversion is a valuable working resource for academic researchers, industrial scientists and graduate students working in the fields of biomass conversion, catalysis, materials science, green and sustainable chemistry, and chemical/process engineering.
Download or read book Hydrogenation with Low Cost Transition Metals written by Jacinto Sa and published by CRC Press. This book was released on 2018-10-08 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogenation with Low-Cost Transition Metals describes recent developments in the preparation of catalysts and their catalytic abilities in chemoselective hydrogenation for the production of fine chemicals and pharmaceutical compounds. Emphasizing the use of low-cost metals (Cu, Ni, Fe, and Ag) that are often present in the form of nanoparticles, the book provides valuable reaction mechanism schemes, engineering solutions, and perspective for the field.
Download or read book Nanocasting written by An-Hui Lu and published by Royal Society of Chemistry. This book was released on 2010 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanostructured materials with tailored properties are regarded as a fundamental element in the development of future science and technology. Research is still ongoing into the nanosized construction elements required to create functional solids. The recently developed technique, nanocasting, has great advantage over others in terms of the synthesis of special nanostructured materials by the careful choice of suitable elements and nanoengineering steps. This new book summarizes the recent developments in nanocasting, including the principles of nanocasting, syntheses of novel nanostructured materials, characterization methods, detailed synthetic recipes and further possible development in this area. The book focuses on the synthesis of porous solids from the viewpoint of methodology and introduces the science of nanocasting from fundamental principles to their use in synthesis of various materials. It starts by outlining the principles of nanocasting, requirements to the templates and precursors and the tools needed to probe matter at the nanoscale level. It describes how to synthesize nano structured porous solids with defined characteristics and finally discusses the functionalization and application of porous solids. Special attention is given to new developments in this field and future perspectives. A useful appendix covering the detailed synthetic recipes of various templates including porous silica, porous carbon and colloidal spheres is included which will be invaluable to researchers wanting to follow and reproduce nanocast materials. Topics covered in the book include: * inorganic chemistry * organic chemistry * solution chemistry * sol-gel and interface science * acid-base equilibria * electrochemistry * biochemistry * confined synthesis The book gives readers not only an overview of nanocasting technology, but also sufficient information and knowledge for those wanting to prepare various nanostructured materials without needing to search the available literature.
Download or read book Soft Matters for Catalysts written by Qingmin Ji and published by CRC Press. This book was released on 2019-09-25 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the increasing demand for optimization of energy storage, maintenance of the environment, and effective production, control on nanostructures of catalysts and optimization of their organization have become key to achieving high efficiency and specificity in energy and material conversion systems. This book emphasizes and summarizes the novel design of soft matters (molecules, polymers, assembled motifs, etc.) for nanocatalysts and nanocatalyst supports. The diversity or specialty of soft matters offers a new perspective and great promise for the development of new nanocatalytic systems for future requirements. Soft matters can provide a simple and well-defined space for the discovery of new catalysts. This book covers nonmetallic organocatalysts, organometallic compounds, dendrimers, ionic liquids, enzymes, polymers, various organized nanoarchitectures for supporting catalysts, and molecular dynamics in catalytic surface reactions. It gives readers a complete picture of the catalysis systems based on soft matters and is a useful reference for advanced undergraduate- and graduate-level students and researchers in chemistry, biology, materials science, nanoscience, polymer science, and catalysis.
Download or read book Metal Organic Framework Composites written by Anish Khan and published by Materials Research Forum LLC. This book was released on 2019-10-25 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of their nanoporous structures and ultra-high surface areas Metal-Organic Framework Composites (MOFs) are very interesting materials. The book focusses on the following applications: gas capture and storage, especially molecular hydrogen storage; performance enhancement of Li-ion batteries; gas separation, nano-filtration, ionic sieving, water treatment, and catalysis; sustainable renewable energy resources, electrochemical capacitors, including supercapacitors, asymmetric supercapacitors and hybrid supercapacitors; biomedical disciplines including drug delivery, theranostics; biological detection and imaging; nanoparticle photosensitizers for photodynamic therapy (PDT) and photothermal therapy (PTT). Keywords: MOF Materials, Hydrogen Storage, Renewable Energy Applications, Lithium Batteries, MOF-Quantum Dots, Clean Energy, Nanoporous MOFs, Supercapacitors, Therapeutic Applications, Biosensing, Bioimaging, Phototherapy of Cancer, Gas Separation, Nano-filtration, Ionic Sieving, Water Treatment, Drug Delivery, Theranostics; Nanoparticle Photosensitizers, Photodynamic Therapy (PDT), Photothermal Therapy (PTT).
Download or read book Metal Organic Framework Materials written by Leonard R. MacGillivray and published by John Wiley & Sons. This book was released on 2014-09-19 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Organic Frameworks (MOFs) are crystalline compounds consisting of rigid organic molecules held together and organized by metal ions or clusters. Special interests in these materials arise from the fact that many are highly porous and can be used for storage of small molecules, for example H2 or CO2. Consequently, the materials are ideal candidates for a wide range of applications including gas storage, separation technologies and catalysis. Potential applications include the storage of hydrogen for fuel-cell cars, and the removal and storage of carbon dioxide in sustainable technical processes. MOFs offer the inorganic chemist and materials scientist a wide range of new synthetic possibilities and open the doors to new and exciting basic research. Metal-Organic Frameworks Materials provides a solid basis for the understanding of MOFs and insights into new inorganic materials structures and properties. The volume also reflects progress that has been made in recent years, presenting a wide range of new applications including state-of-the art developments in the promising technology for alternative fuels. The comprehensive volume investigates structures, symmetry, supramolecular chemistry, surface engineering, recognition, properties, and reactions. The content from this book will be added online to the Encyclopedia of Inorganic and Bioinorganic Chemistry: http://www.wileyonlinelibrary.com/ref/eibc
Download or read book Nanoporous Catalysts for Biomass Conversion written by Feng-Shou Xiao and published by John Wiley & Sons. This book was released on 2017-09-05 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive introduction to the design, synthesis, characterization, and catalytic properties of nanoporous catalysts for the biomass conversion With the specter of peak oil demand looming on the horizon, and mounting concerns over the environmental impact of greenhouse gas emissions, biomass has taken on a prominent role as a sustainable alternative fuel source. One critical aspect of the biomass challenge is the development of novel catalytic materials for effective and controllable biomass conversion. Edited by two scientists recognized internationally for their pioneering work in the field, this book focuses on nanoporous catalysts, the most promising class of catalytic materials for the conversion of biomass into fuel and other products. Although various catalysts have been used in the conversion of biomass-derived feedstocks, nanoporous catalysts exhibit high catalytic activities and/or unique product selectivities due to their large surface area, open nanopores, and highly dispersed active sites. This book covers an array of nanoporous catalysts currently in use for biomass conversion, including resins, metal oxides, carbons, mesoporous silicates, polydivinylbenzene, and zeolites. The authors summarize the design, synthesis, characterization and catalytic properties of these nanoporous catalysts for biomass conversions, discussing the features of these catalysts and considering future opportunities for developing more efficient catalysts. Topics covered include: Resins for biomass conversion Supported metal oxides/sulfides for biomass oxidation and hydrogenation Nanoporous metal oxides Ordered mesoporous silica-based catalysts Sulfonated carbon catalysts Porous polydivinylbenzene Aluminosilicate zeolites for bio-oil upgrading Rice straw Hydrogenation for sugar conversion Lignin depolymerization Timely, authoritative, and comprehensive, Nanoporous Catalysts for Biomass Conversion is a valuable working resource for academic researchers, industrial scientists and graduate students working in the fields of biomass conversion, catalysis, materials science, green and sustainable chemistry, and chemical/process engineering.
Download or read book Designing Three Dimensional Nanoporous Metal Alloys for Selective Electrochemical Conversion Catalysis written by Swarnendu Chatterjee and published by . This book was released on 2020 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rising demands of clean energy owing to a burgeoning global population and deteriorating climate has given rise to new avenues of research in electrocatalysis focusing on extraction and storage of energy through electrochemical reactions. In contrast to heterogeneous catalysts, electrochemical catalysts often need to withstand harsh reaction environments with respect to electrolyte pH and applied overpotentials. The stability requirements constrain the breadth of applicable materials, limiting the viable catalysts to those composed of more noble metals, which are invariably more costly. The design of next generation electrocatalyst materials requires strategies to balance activity and stability while at the same time minimizing the utilization of expensive materials to limit costs. Open-framework nanocatalyst architectures show promise as they maximize surface area to volume ratios and their morphology and surface chemistry are readily tuned through controlled processing methodologies. Among the high aspect ratio, open-framework nanostructures, nanoporous metals obtained through dealloying offer a unique class of three dimensional electrode materials that are useful for a number of electrolytic processes owing to their conductive high surface area structure and tunable near surface composition. Herein, we study the porosity evolution processes in multimetallic alloys through classical dealloying and alternative methods, in pursuit of creating optimal bicontinuous nanoporous architectures for two important electrochemical reactions, central to the carbon and water cycles: CO2 reduction reaction (CO2RR) and oxygen evolution reaction (OER). To address the limitations of electrochemical dealloying for nanoporous metal synthesis, we first develop a new alternative method where we thermally decompose readily available transition metal dichalcogenides to create bicontinuous three dimensional metallic nanostructures. We show that spinodal decomposition with a proper balance of removal of the chalcogen component and surface diffusion of metal is possible that gives rise to uniform porosity length scales below 100 nm. Our new method is applicable to a broader range of materials including the refractory metals which are difficult to obtain in nanoporous bicontinuous form through conventional dealloying techniques. For CO2RR, we demonstrate favorable tuning of the near surface composition of core shell nanoporous alloys to mitigate a common problem in CO2 electrolysis which is the poisoning of electrocatalytic surface during long term reaction. CO2RR shows great promise as a remediation strategy to convert and store anthropogenic CO2. To realize its practical integration in industries with high CO2 emissions, uninterrupted activity of electrocatalyst is important at reasonable reaction timescales. Among the materials capable of electrochemically converting CO2 to formate which is a high energy density product, Palladium is unique in that it has shown substantial faradaic efficiency at minimal overpotential. Limiting its implementation, however, is its gradual deactivation through CO poisoning during constant potential CO2RR. Here, we show synthesis of core-shell nanoporous multi-metallic Pd alloys that display suppressed CO deactivation during formate production based on suitable choice of alloying component. The improvement in deactivation tolerance has been attributed to a combination of electronic impacts of subsurface alloying components as well as the composition dependent hydricity of the Pd alloys. The Pd skinned nanoporous alloys have been obtained by electrochemical dealloying where the high surface area electrode structure provides high formate partial current densities with minimal CO poisoning while not altering the formate selectivity at low CO2RR overpotentials. Aqueous CO2RR system also requires a stable electrocatalyst at the anode for the OER which requires stricter stability constraints for the electrocatalysts. OER is also the performance limiting component in the water splitting reactions of PEM electrolyzers. The oxidative potential of OER is difficult for many active materials to survive. In addition to the sluggish kinetics of the anodic OER, low catalyst stability and electrode conductivity lead to process inefficiencies. Higher valent oxidation states of Ir have been identified as the only materials that demonstrate a reasonable balance of activity and durability for acidic OER. Attempts to make nanoporous Ir employing dealloying for high surface area electrodes are limited owing to its strong tendency to make immobile oxides that defy morphology evolution through dealloying. Here we design a dealloying protocol to create unique nanoporous Ir morphologies, including porous nanosheets that exhibit sufficient activity and durability while displaying higher lateral and through-plane conductivity when compared to standard IrO2 catalysts. The metallic core of the nanoporous metal ligaments and absence of any binder/support result in low electrode and charge transfer resistances; ultimately giving rise to lower overpotential and improved electrochemically active surface area (ECSA) normalized current densities compared to IrO2. This thesis outlines the analysis of design of nanoporous core shell bicontinuous alloys and porous nanosheets through top down techniques for wide combinations of metals including the refractory metals which are difficult to obtain through existing dealloying methods. Nanoporous metal based electrodes show promise for utilization in high throughput CO2RR systems and PEM water electrolyzers both of which are important parts of renewable energy technologies.
Download or read book Catalytic Application of Nano Gold Catalysts written by Neeraj Kumar Mishra and published by BoD – Books on Demand. This book was released on 2016-08-31 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gold, considered catalytically inactive for a long time, is now a fascinating partner of modern chemistry, as scientists such as Bond, Teles, Haruta, Hutchings, Ito and Hayashi opened new perspectives for the whole synthetic chemist community. Recently gold has attracted significant attention due to its advantageous characteristics as a catalytic material and since it allows easy functionalization with biologically active molecules. In this context, when gold is prepared as very small particles, it turns out to be a highly active catalyst. However, such a phenomenon completely disappears when the gold particle size grows into the micrometer range. Therefore, the preparation for obtaining an active gold catalyst is so important. The primary objective of this book is to provide a comprehensive overview of gold metal nanoparticles and their application as promising catalysts.
Download or read book The Development of Catalysis written by Adriano Zecchina and published by John Wiley & Sons. This book was released on 2017-04-03 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gradually brings the reader, through illustrations of the most crucial discoveries, into the modern world of chemical catalysis. Readers and experts will better understand the enormous influence that catalysis has given to the development of modern societies. • Highlights the field's onset up to its modern days, covering the life and achievements of luminaries of the catalytic era • Appeals to general audience in interpretation and analysis, but preserves the precision and clarity of a scientific approach • Fills the gap in publications that cover the history of specific catalytic processes
Download or read book Nanoparticles in Catalysis written by Shū Kobayashi and published by Springer Nature. This book was released on 2020-11-06 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses the great potential of metal nanoparticle catalysts for complicated molecular synthesis and reviews the current progress of this field. The development of highly active and stable heterogeneous catalysts is a crucial subject in modern science. However, development of heterogeneous catalysts for fine chemical synthesis has lagged far behind those for bulk chemical process. In recent years metal nanoparticle catalysts have been of great interest in this area due to their unique activity, ease of heterogenization, and robustness. Therefore, metal nanoparticle catalysts are an excellent candidate for the above-mentioned active and robust heterogeneous catalysts and this book provides an overview of this area. The present volume summarizes recent progress on nanoparticle catalysis for various organic transformations from simple redox reactions to complex asymmetric C–C bond forming reactions and also presents seminal studies on new technologies. It comprehensively summarizes advances in metal nanoparticle catalysis across several aspects including reaction manners, mechanistic investigations and new synthetic methodologies to encourage the use of metal nanoparticle catalysts for future organic synthesis. This volume will be of interest to students, researchers and professionals focused on the next-generation of fine chemical synthesis.
Download or read book Nanoporous Materials for Molecule Separation and Conversion written by Jian Liu and published by Elsevier. This book was released on 2020-07-04 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoporous Materials for Molecule Separation and Conversion cover the topic with sections on nanoporous material synthesis and characterization, nanoporous materials for molecule separation, and nanoporous materials for energy storage and renewable energy. Typical nanoporous materials including carbon, zeolite, silica and metal-organic frameworks and their applications in molecule separation and energy related applications are covered. In addition, the fundamentals of molecule adsorption and molecule transport in nanoporous materials are also included, providing readers with a stronger understanding of the principles and topics covered. This is an important reference for anyone exploring nanoporous materials, including researchers and postgraduate students in materials science and chemical engineering. In addition, it is ideal for industry professionals working on a wide range of applications for nanoporous materials. Outlines the fundamental principles of nanoporous materials design Explores the application of nanoporous materials in important areas such as molecule separation and energy storage Gives real-life examples of how nanoporous materials are used in a variety of industry sector
Download or read book Nanoparticles in Catalysis written by Karine Philippot and published by John Wiley & Sons. This book was released on 2021-06-28 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles in Catalysis Discover an essential overview of recent advances and trends in nanoparticle catalysis Catalysis in the presence of metal nanoparticles is an important and rapidly developing research field at the frontier of homogeneous and heterogeneous catalysis. In Nanoparticles in Catalysis, accomplished chemists and authors Karine Philippot and Alain Roucoux deliver a comprehensive guide to the key aspects of nanoparticle catalysis, ranging from synthesis, activation methodology, characterization, and theoretical modeling, to application in important catalytic reactions, like hydrogen production and biomass conversion. The book offers readers a review of modern and efficient tools for the synthesis of nanoparticles in solution or onto supports. It emphasizes the application of metal nanoparticles in important catalytic reactions and includes chapters on activation methodology and supported nanoclusters. Written by an international team of leading voices in the field, Nanoparticles in Catalysis is an indispensable resource for researchers and professionals in academia and industry alike. Readers will also benefit from the inclusion of: A thorough introduction to New Trends in the Design of Metal Nanoparticles and Derived Nanomaterials for Catalysis An exploration of Dynamic Catalysis and the Interface Between Molecular and Heterogeneous Catalysts A practical discussion of Metal Nanoparticles in Water: A Relevant Toolbox for Green Catalysis Organometallic Metal Nanoparticles for Catalysis A concise treatment of the opportunities and challenges of CO2 Hydrogenation to Oxygenated Chemicals Over Supported Nanoparticle Catalysts Perfect for catalytic, organic, inorganic, and physical chemists, Nanoparticles in Catalysis will also earn a place in the libraries of chemists working with organometallics and materials scientists seeking a one-stop resource with expert knowledge on the synthesis and characterization of nanoparticle catalysis.
Download or read book Nanoporous Materials for Energy and the Environment written by Gilbert Rios and published by CRC Press. This book was released on 2016-04-19 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book disseminates and discusses relevant best case examples and research practices that show how nanomaterial research and related engineering concepts may provide answers and viable solutions to a variety of socioeconomic issues and concerns. The first section is dedicated to the development of new materials and their characterization. The se
Download or read book Metal Organic Frameworks for Chemical Reactions written by Anish Khan and published by Elsevier. This book was released on 2021-01-19 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal-Organic Frameworks for Chemical Reactions: From Organic Transformations to Energy Applications brings together the latest information on MOFs materials, covering recent technology in the field of manufacturing and design. The book covers different aspects of reactions from energy storage and catalysts, including preparation, design and characterization techniques of MOFs material and applications. This comprehensive resource is ideal for researchers and advanced students studying metal-organic frameworks in academia and industry. Metal-organic frameworks (MOFs) are nanoporous polymers made up of inorganic metal focuses connected by natural ligands. These entities have become a hot area of research because of their exceptional physical and chemical properties that make them useful in di?erent ?elds, including medicine, energy and the environment. Since combination conditions strongly a?ect the properties of these compounds, it is especially important to choose an appropriate synthetic technique that produces a product with homogenous morphology, small size dispersion, and high thermal stability. Covers the synthetic advantages and versatile applications of metal-organic frameworks (MOFs) due to their organic-inorganic hybrid nature and unique porous structure Includes energy applications such as batteries, fuel storage, fuel cells, hydrogen evaluation reactions and super capacitors Features information on using MOFs as a replacement to conventional engineering materials because they are lightweight, less costly, environmentally-friendly and sustainable
