Development of Nanostructured Ceramic Catalysts Based on Mixed Metal Oxides

Development of Nanostructured Ceramic Catalysts Based on Mixed Metal Oxides
Author: Alexandre Amormino dos Santos Gonçalves
Publisher:
Total Pages: 205
Release: 2018
Genre: Catalysts
ISBN:
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The present and future directions in catalysis count on the structures that function at the nanoscale. In this scenery, the creation of metal oxides and mixed metal oxides with controlled properties is of great interest for the energy sector and environmental remediation. Therefore, porous ceramic catalysts are extensively studied to achieve, often challenging, new nanoscopic properties. Considering current technologies, it was challenging to create such materials with tuned surface properties, well-developed porosity, and proper degree of crystallinity, particularly with combined these features. Because a compensation effect exists between thermally activated processes, namely, the degrees of porosity and crystallinity. The latter can be improved by increase in temperature, which in turn promotes sintering, the consequence of which is the deterioration or collapse of mesophase paired with the improvement in crystallinity. This phenomenon is unavoidable as it is thermodynamically driven. Therefore, the objective of this dissertation was to gain proper understanding of the nanostructuring and sintering processes of nanoporous ceramics based on mixed metal oxides. In turn, this allows one to design synthesis strategies that circumvent the compensation effect to deliver ceramic catalysts with desired features. Nonetheless, the following topics were systematically investigated and reported herein: i) soft-templating synthesis of mixed metal oxides by evaporation-induced self-assembly under controlled conditions, paired with thermoanalytical studies on the mesophase formation and stability; ii) effect of the support surface properties in catalysis with sight on catalyst performance and stability; and iii) soft-templating synthesis of mixed metal oxides with higher degree of crystallinity by defect-induced effect, along with studies on the sintering behavior and engineering porosity in nanomaterials.

Ceramic Catalysts

Ceramic Catalysts
Author: Manju Kurian
Publisher: Elsevier
Total Pages: 352
Release: 2023-04-27
Genre: Technology & Engineering
ISBN: 0323856330
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Ceramic Catalysts: Materials, Strategies and Applications focuses on synthesis techniques and applications of ceramic materials in heterogenous catalysis. In order to enable an affordable, sustainable, low-carbon economy, research activities have been intensified in this area over recent years. The rapid accumulation of results has been evaluated and summarized by recognized experts working in their respective fields in the form of separate and complementary chapters. The first part of the book is dedicated to synthesis and catalytic applications of different categories of ceramics that include both porous ceramics and ceramic composites. Catalytic applications of ceramics mainly involving waste-water treatment, combustion reactions, and fine chemical synthesis are also discussed. Use of ceramics as catalyst supports is also given importance in the book. The book is intended to act as a valuable reference resource for both researchers and postgraduate students with key emphasis on the following areas of research: Recent techniques for the synthesis of different ceramics; specific characteristics of each type of ceramics for catalytic applications; different types of catalyzed reactions based on inherent chemical characteristics and sustainable technologies based on ceramic catalysts.The book will be an essential reference resource for industrial and academic researchers, materials scientists, chemists, and environmental scientists. Provides an extensive overview of ceramic materials involved in catalysis Presents the current state of art as tremendous progress has been achieved over recent years Contributors are at the forefront of research Provides an evaluation and comparison of the different types of ceramic materials available, including structure, properties and performance

Innovative Applications of Mo(W)-Based Catalysts in the Petroleum and Chemical Industry: Emerging Research and Opportunities

Innovative Applications of Mo(W)-Based Catalysts in the Petroleum and Chemical Industry: Emerging Research and Opportunities
Author: Ge, Hui
Publisher: IGI Global
Total Pages: 174
Release: 2017-02-08
Genre: Technology & Engineering
ISBN: 1522522751
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Mo(W)-Based Catalysts have the capacity to drastically impact many different industries. Research on their most current applications is important for the success of many organizations and companies, specifically the chemical and petroleum industries. Innovative Applications of Mo(W)-Based Catalysts in the Petroleum and Chemical Industry: Emerging Research and Opportunities is an informative resource that overviews emerging methods and techniques that incorporate 2D layer Mo(W) dichalcogenides. Featuring extensive coverage on a range of subjects including 2D nanosheets, hybridization, dichacogenides, and oxide based catalysts, this is an ideal publication for academicians, students, engineers, and researchers seeking insight on the latest advancements in Mo(W)-Based catalyst applications.

Chemistry of Nanocrystalline Oxide Materials

Chemistry of Nanocrystalline Oxide Materials
Author: K. C. Patil
Publisher: World Scientific
Total Pages: 362
Release: 2008
Genre: Science
ISBN: 9812793151
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Nano-oxide materials lend themselves to applications in a wide variety of emerging technological fields such as microelectronics, catalysts, ceramics, coatings, and energy storage. However, developing new routes for making nano-based materials is a challenging area for solid-state materials chemists. This book does just that by describing a novel method for preparing them. The authors have developed a novel low-temperature, self-propagating synthetic route to nano-oxides by the solution combustion and combustible precursor processes. This method provides the desired composition, structure, and properties for many types of technologically useful nanocrystalline oxide materials like alumina, ceria, iron oxides, titania, yttria, and zirconia, among others.The book is particularly instructive in bringing readers one step closer to the exploration of nanomaterials. Students of nanoscience can acquaint themselves with the actual production and evaluation of nanopowders by this route, while academic researchers and industrial scientists will find answers to a host of questions on nano-oxides. The book also provides an impetus for scientists in industrial research to evaluate and explore new ways to scale up the production of nanomaterials, offering helpful suggestions for further research.

International Assessment Of Research And Development In Catalysis By Nanostructured Materials

International Assessment Of Research And Development In Catalysis By Nanostructured Materials
Author: Robert Davis
Publisher: World Scientific
Total Pages: 329
Release: 2011-01-20
Genre: Science
ISBN: 1908977809
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Catalyst technologies account for over $1 trillion of revenue in the U.S. economy alone. The applications range from medicines and alternative energy fuel cell technologies to the development of new and innovative clothing fibers. In this book, a World Technology Evaluation Center (WTEC) panel of eight experts in the field assesses the current state of research and development in catalysis by nanostructured materials, its sources of funding, and discusses the state of the field with respect to productivity and leadership in various nations around the world. In addition to showing the numerous and highly advantageous practical applications of the field, the panel concludes that Western Europe is currently the most productive region, followed closely by the United States. Still, the research and development output of the People's Republic of China has recently surpassed that of Japan and is now poised to surpass that of the U.S. as well.As such, this assessment is a timely review of the field's progress, taking into account the increasing contributions from Asia, and will be essential reading for professionals, whether they are seeking an in-depth summary of the state of the art or a broad view of trends affecting the discipline./a

Nanostructured Catalysts

Nanostructured Catalysts
Author: Susannah L. Scott
Publisher: Springer Science & Business Media
Total Pages: 341
Release: 2008-04-06
Genre: Science
ISBN: 0387306412
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With the recent advent of nanotechnology, research and development in the area of nanostructured materials has gained unprecedented prominence. Novel materials with potentially exciting new applications are being discovered at a much higher rate than ever before. Innovative tools to fabricate, manipulate, characterize and evaluate such materials are being developed and expanded. To keep pace with this extremely rapid growth, it is necessary to take a breath from time to time, to critically assess the current knowledge and provide thoughts for future developments. This book represents one of these moments, as a number of prominent scientists in nanostructured materials join forces to provide insightful reviews of their areas of expertise, thus offering an overall picture of the state-- the art of the field. Nanostructured materials designate an increasing number of materials with designed shapes, surfaces, structures, pore systems, etc. Nanostructured materials with modified surfaces include those whose surfaces have been altered via such techniques as grafting and tethering of organic or organometallic species, or through various deposition procedures including electro, electroless and vapor deposition, or simple adsorption. These materials find important applications in catalysis, separation and environmental remediation. Materials with patterned surfaces, which are essential for the optoelectronics industry, constitute another important class of surface-modified nanostructured materials. Other materials are considered nanostructured because of their composition and internal organization.

Nanostructured Catalysts

Nanostructured Catalysts
Author: Christian Hess
Publisher: Royal Society of Chemistry
Total Pages: 453
Release: 2011-07-22
Genre: Science
ISBN: 1847559875
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The book gives a comprehensive up-to-date summary of the existing information on the structural/electronic properties, chemistry and catalytic properties of vanadium and molybdenum containing catalysts. It discusses the importance of nanoscience for the controlled synthesis of catalysts with functional properties and introduces the necessary background regarding surface properties and preparation techniques, leading from a textbook level to the current state of knowledge. Then follows an extensive survey and analysis of the existing open and patent literature - an essential knowledge source for the development of the new generation of partial oxidation catalysts. Important examples from current research on partial oxidation reactions are reviewed from experts in the field. The next chapter discusses the importance of 2- and 3-dimensional model systems for a fundamental understanding of the structure of transition metal oxide catalysts and its correlation to reactivity. Finally, an outlook on research opportunities within the area of partial oxidation reactions is presented.

Crystalline Metal Oxide Catalysts

Crystalline Metal Oxide Catalysts
Author: Wataru Ueda
Publisher: Springer Nature
Total Pages: 398
Release: 2022-10-26
Genre: Science
ISBN: 981195013X
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This book introduces the innovatively advanced crystalline metal oxide catalysts that have multi-catalytic functions on the basis of spatially placed elements in crystal structure. With authors who are experts in their fields, the chapters of the book are organized according to catalytic function, on the basis of crystal structure. The book also covers the structure determination of micro–nano-sized metal oxide crystals that are now standard in most catalytic materials and new trends in catalyst development using materials informatics and catalytic informatics. The information contained here will guide researchers who are eager to carry out sustainable catalytic processes and ultimately to achieve a sustainable society in their quest for catalyst development.

Metal Oxide-Carbon Hybrid Materials

Metal Oxide-Carbon Hybrid Materials
Author: Muhammad Akram Chaudhry
Publisher: Elsevier
Total Pages: 590
Release: 2022-03-20
Genre: Technology & Engineering
ISBN: 0128227087
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Metal Oxide–Carbon Hybrid Materials: Synthesis, Properties and Applications reviews the advances in the fabrication and application of metal oxide–carbon-based nanocomposite materials. Their unique properties make them ideal materials for gas-sensing, photonics, catalysis, opto-electronic, and energy-storage applications. In the first section, the historical background to the hybrid materials based on metal oxide–carbon and the hybridized metal oxide composites is provided. It also highlights several popular methods for the preparation of metal oxide–carbon composites through solid-state or solution-phase reactions, and extensively discusses the materials’ properties. Fossil fuels and renewable energy sources cannot meet the ever-increasing energy demands of an industrialized and technology-driven global society. Therefore, the role of metal oxide–carbon composites in energy generation, hydrogen production, and storage devices, such as rechargeable batteries and supercapacitors, is of extreme importance. These problems are discussed in in the second section of the book. Rapid industrialization has resulted in serious environmental issues which in turn have caused serious health problems that require the immediate attention of researchers. In the third section, the use of metal oxide–carbon composites in water purification, photodegradation of industrial contaminants, and biomedical applications that can help to clean the environment and provide better healthcare solutions is described. The final section is devoted to the consideration of problems associated with the development of sensors for various applications. Numerous studies performed in this area have shown that the use of composites can significantly improve the operating parameters of such devices. Metal Oxide–Carbon Hybrid Materials: Synthesis, Properties and Applications presents a comprehensive review of the science related to metal oxide–carbon composites and how researchers are utilizing these materials to provide solutions to a large array of problems. Reviews the fundamental properties and fabrication methods of metal-oxide–carbon composites Discusses applications in energy, including energy generation, hydrogen production and storage, rechargeable batteries, and supercapacitors Includes current and emerging applications in environmental remediation and sensing

Nanostructured Anodic Metal Oxides

Nanostructured Anodic Metal Oxides
Author: Grzegorz D. Sulka
Publisher: Elsevier
Total Pages: 484
Release: 2020-03-27
Genre: Technology & Engineering
ISBN: 0128168773
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Nanostructured Anodic Metal Oxides: Synthesis and Applications reviews the current status of fabrication strategies that have been successfully developed to generate nanoporous, nanotubular and nanofibrous anodic oxides on a range of metals. The most recent achievements and innovative strategies for the synthesis of nanoporous aluminum oxide and nanotubular titanium oxide are discussed. However, a special emphasis is placed on the possibility of fabrication of nanostructured oxide layers with different morphologies on other metals, including aluminum titanium, tantalum, tin, zinc, zirconium and copper. In addition, emerging biomedical applications of synthesized materials are discussed in detail. During the past decade, great progress has been made both in the preparation and characterization of various nanomaterials and their functional applications. The anodization of metals has proven to be reliable for the synthesis of nanoporous, nanotubular and nanofibrous metal oxides to produce a desired diameter, density, aspect ratio (length to diameter) of pores/tubes, and internal pore/tube structure. Provides an in-depth overview of anodization techniques for a range of metals Explores the emerging applications of anodic metal oxides Explains mechanisms of formation valve metal oxides via anodization