Download or read book Spectroscopic Studies of Titania Supported Vanadia Catalysts written by Andrew M. Ward 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 Springer Handbook of Advanced Catalyst Characterization written by Israel E. Wachs and published by Springer Nature. This book was released on 2023-06-12 with total page 1109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Co-edited by world-renowned scientists in the field of catalysis, this book contains the cutting-edge in situ and operando spectroscopy characterization techniques operating under reaction conditions to determine a materials’ bulk, surface, and solution complex and their applications in the field of catalysis with emphasis on solid catalysts in powder form since such catalyst are relevant for industrial applications. The handbook covers from widely-used to cutting-edge techniques. The handbook is written for a broad audience of students and professionals who want to pursue the full capabilities available by the current state-of-the-art in characterization to fully understand how their catalysts really operate and guide the rational design of advanced catalysts. Individuals involved in catalysis research will be interested in this handbook because it contains a catalogue of cutting-edge methods employed in characterization of catalysts. These techniques find wide use in applications such as petroleum refining, chemical manufacture, natural gas conversion, pollution control, transportation, power generation, pharmaceuticals and food processing. fdsfds
Download or read book Temperature Programmed Desorption Studies of Selective Catalytic Reduction of Nitric Oxide by Ammonia Over Titania Vanadia and Titania Supported Vanadia Catalysts written by Thomas Zvonimir Srnak and published by . This book was released on 1990 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vanadium porous Titania Glass Catalysts written by Yee Hong Chee and published by . This book was released on 1991 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Supported Vanadium Oxide Catalysts for the Selective Catalytic Reduction of Nitrogen Oxides written by Gregory Thomas Went and published by . This book was released on 1991 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectroscopic Properties of Inorganic and Organometallic Compounds written by Jack Yarwood and published by Royal Society of Chemistry. This book was released on 2011-11-11 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series provides an unequalled source of information on an area of chemistry that continues to grow in importance. Divided into sections mainly according to the particular spectroscopic technique used, coverage in each volume includes: NMR (with reference to stereochemistry, dynamic systems, paramagnetic complexes, solid state NMR and Groups 13-18); nuclear quadrupole resonance spectroscopy; vibrational spectroscopy of main group and transition element compounds and coordinated ligands; and electron diffraction. Reflecting the growing volume of published work in the field, researchers will find this an invaluable source of information on current methods and applications.
Download or read book Spectroscopic Properties of Inorganic and Organometallic Compounds written by G Davidson and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopic Properties of Inorganic and Organometallic Compounds provides a unique source of information on an important area of chemistry. Divided into sections mainly according to the particular spectroscopic technique used, coverage in each volume includes: NMR (with reference to stereochemistry, dynamic systems, paramagnetic complexes, solid state NMR and Groups 13-18); nuclear quadrupole resonance spectroscopy; vibrational spectroscopy of main group and transition element compounds and coordinated ligands; and electron diffraction. Reflecting the growing volume of published work in this field, researchers will find this Specialist Periodical Report an invaluable source of information on current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading experts in their specialist fields, this series is designed to help the chemistry community keep current with the latest developments in their field. Each volume in the series is published either annually or biennially and is a superb reference point for researchers. www.rsc.org/spr
Download or read book Structured Catalysts and Reactors written by Andrzej Cybulski and published by CRC Press. This book was released on 2005-11-02 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in structured catalysts is steadily increasing due to the already proven, as well as potential, advantages of these catalysts. Updating the comprehensive coverage of the first edition published in 1998 with the latest science and applications, Structured Catalysts and Reactors, Second Edition gives detailed information on all aspect
Download or read book Catalysis written by J. J. Spivey and published by Royal Society of Chemistry. This book was released on 2012 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is an increasing need to find cost-effective and environmentally sound methods of converting natural resources into fuels, chemicals and energy; catalysts are pivotal to such processes. Catalysis highlights major developments in this area. Coverage of this Specialist Periodical Report includes all major areas of heterogeneous catalysis. n each volume, specific areas of current interest are reviewed. Examples of topics include experimental methods, acid/base catalysis, materials synthesis, environmental catalysis, and syngas conversion.
Download or read book Spectroscopic studies on heterogeneous oxidation catalysts written by Bo Jonson and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectroscopic Studies of Size selected Ru and Pt Clusters on Titania written by Liam Howard-Fabretto and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal clusters are small groups of bound metal atoms which can have distinctly different electronic and catalytic properties, unique from those of a bulk sample of the same metal. The main motivation for research on clusters is their potential for use in catalysis and photocatalysis. The physical and chemical properties of metal clusters are dependent on size, as well as the cluster-substrate interaction. It is difficult to predict the properties of a cluster/substrate pair if studies have not been performed on that specific combination. Fundamental measurements into cluster properties have previously been performed on a range of cluster/substrate combinations, where Au clusters and TiO2(110) surfaces have received a large focus. However, there are many important cluster and substrate materials which have not had their surface properties measured, which is vital for the informed design of efficient catalytic materials. -- The original contribution to knowledge in this field is through the novel experimental measurements and analysis of the surface properties and electronic properties of 3-atom Ru3 clusters supported on radio frequency (RF)-sputter deposited titania substrates (RF-TiO2). Ru3 was chosen due to its potential catalytic and photocatalytic applications. RF-TiO2 is a cost-effective alternative to the commonly used TiO2(110) substrate and was chosen due to its ease of production and applicability to industrial applications. The aims were to determine details about the cluster-surface interaction and temperature stability of the clusters, in addition to measuring their electronic density of states (DOS). Additional cluster and substrate systems were analysed for comparison to Ru3/RF-TiO2. This study provides a strong basis for future work on the catalysis of RF-TiO2-supported Ru3. -- Ru3 clusters were deposited onto RF-TiO2 and analysed using temperature programmed desorption (TPD) to probe Ru-CO binding sites, and X-ray photoelectron spectroscopy (XPS) was used to provide chemical information. Differences in cluster-support interactions were compared for bare Ru3 deposited using an ultra-high vacuum (UHV) cluster source (CS), and the chemical vapor deposition (CVD) of ligated Ru3(CO)12 clusters. For CS-deposited Ru3, heating to 800 K caused partial oxidation of clusters on both non-sputtered and sputter-treated RF-TiO2. Furthermore, on sputter-treated RF-TiO2 all Ru-CO binding sites on the clusters were blocked immediately after deposition for CS-deposited Ru3, but for CVD-deposited Ru3(CO)12 the clusters were protected by their ligands and the Ru-CO binding sites were only blocked once the sample had been heated to 723 K. The mechanism for complete blocking of Ru-CO binding sites on sputtered RF-TiO2 could not be directly determined from this first study. -- To further probe the Ru3/RF-TiO2 system, additional temperature-dependent (TD) measurements were performed to analyse the effects of heat treatment. Samples were analysed with TD-XPS, angle-resolved (AR) XPS, and low energy ion scattering spectroscopy (LEIS). Ru3 was deposited onto RF-TiO2 using 3 methods: solution submersion of Ru3(CO)12, CVD-deposition of Ru3(CO)12, and CS-deposition of bare Ru3. TD-XPS showed that after heat treatment the Ru 3d BE was very similar between the methods suggesting the cluster oxidation state was the same. TD-LEIS showed the encapsulation of CVD Ru3(CO)12 on sputter-treated RF-TiO2 by a titania overlayer after heat treatment. The average overlayer thickness was calculated to be 0.35 nm ± 0.08 nm, which is thin enough that there is the potential for catalytic or photocatalytic reactions to occur. The encapsulation of the clusters help explain the mechanism behind the complete blocking of Ru-CO sites, suggesting CO is sterically hindered from accessing Ru by the overlayer. -- The electronic DOS for Ru3 on sputter-treated RF-TiO2 was measured using ultraviolet photoelectron spectroscopy (UPS) and metastable impact electron spectroscopy (MIES). Bare Pt3 clusters were CS-deposited for the purpose of comparison to a different cluster of the same size. Measurements both Ru3 and Pt3 were after sample heat treatment. UPS measures the top several layers while MIES has perfect surface sensitivity and measures only the top atomic layer. The electronic DOS of Ru3 was very similar for Ru3 deposited using solution submersion and CVD of Ru3(CO)12. UPS suggests that RF-TiO2-supported Ru3 clusters have metallic characteristics and Pt3 clusters have non-metallic characteristics. MIES suggests that the encapsulating layer above Ru3 clusters is composed of reduced titania with a bonding structure such as Ru-Ti-O, while Pt3 was not encapsulated. The mechanism for the encapsulation of Ru3, but not Pt3, is possibly an energetic benefit for Ru3 encapsulation in terms of the minimisation of surface energy. -- As an extension of previous studies, the effects of changing the supported Run cluster size by a single atom was studied by depositing size-selected Ru4 clusters onto sputter-treated RF-TiO2 and comparing results to previous experiments. Clusters were CVD-deposited with H4Ru4(CO)12 and analysed using TD-XPS, TPD, and UPS. Based on TD-XPS, H4Ru4(CO)12 begins to lose ligands at a slightly lower temperature than Ru3(CO)12, most likely related to the loss of H bridging ligands at low temperatures. Other results were very similar between the clusters. CO-TPD showed that after heat-treatment all Ru-CO binding sites were blocked, caused by encapsulation of the clusters. UPS provided evidence that the encapsulated Ru4 clusters have metallic properties, and the valence DOS was similar for both Ru3 and Ru4. This suggests that the resultant properties of CVD-deposited Ru4 after heat treatment are very similar to Ru3, and that both clusters have the same potential catalytic and photocatalytic benefits when supported on RF-TiO2.
Download or read book Characterization of Supported Vanadium Oxide Catalysts written by Bryan Olthof and published by . This book was released on 1998 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In situ Characterization of Heterogeneous Catalysts written by José A. Rodriguez and published by John Wiley & Sons. This book was released on 2013-06-10 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: HELPS RESEARCHERS DEVELOP NEW CATALYSTS FOR SUSTAINABLE FUEL AND CHEMICAL PRODUCTION Reviewing the latest developments in the field, this book explores the in-situ characterization of heterogeneous catalysts, enabling readers to take full advantage of the sophisticated techniques used to study heterogeneous catalysts and reaction mechanisms. In using these techniques, readers can learn to improve the selectivity and the performance of catalysts and how to prepare catalysts as efficiently as possible, with minimum waste. In-situ Characterization of Heterogeneous Catalysts features contributions from leading experts in the field of catalysis. It begins with an introduction to the fundamentals and then covers: Characterization of electronic and structural properties of catalysts using X-ray absorption fine structure spectroscopy Techniques for structural characterization based on X-ray diffraction, neutron scattering, and pair distribution function analysis Microscopy and morphological studies Techniques for studying the interaction of adsorbates with catalyst surfaces, including infrared spectroscopy, Raman spectroscopy, EPR, and moderate pressure XPS Integration of techniques that provide information on the structural properties of catalysts with techniques that facilitate the study of surface reactions Throughout the book, detailed examples illustrate how techniques for studying catalysts and reaction mechanisms can be applied to solve a broad range of problems in heterogeneous catalysis. Detailed figures help readers better understand how and why the techniques discussed in the book work. At the end of each chapter, an extensive set of references leads to the primary literature in the field. By explaining step by step modern techniques for the in-situ characterization of heterogeneous catalysts, this book enables chemical scientists and engineers to better understand catalyst behavior and design new catalysts for green, sustainable fuel and chemical production.
Download or read book Metal Oxides in Heterogeneous Catalysis written by Jacques C. Vedrine and published by Elsevier. This book was released on 2018-01-11 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal Oxides in Heterogeneous Catalysis is an overview of the past, present and future of heterogeneous catalysis using metal oxides catalysts. The book presents the historical, theoretical, and practical aspects of metal oxide-based heterogeneous catalysis. Metal Oxides in Heterogeneous Catalysis deals with fundamental information on heterogeneous catalysis, including reaction mechanisms and kinetics approaches.There is also a focus on the classification of metal oxides used as catalysts, preparation methods and touches on zeolites, mesoporous materials and Metal-organic frameworks (MOFs) in catalysis. It will touch on acid or base-type reactions, selective (partial) and total oxidation reactions, and enzymatic type reactions The book also touches heavily on the biomass applications of metal oxide catalysts and environmentally related/depollution reactions such as COVs elimination, DeNOx, and DeSOx. Finally, the book also deals with future trends and prospects in metal oxide-based heterogeneous catalysis. - Presents case studies in each chapter that provide a focus on the industrial applications - Includes fundamentals, key theories and practical applications of metal oxide-based heterogeneous catalysis in one comprehensive resource - Edited, and contributed, by leading experts who provide perspectives on synthesis, characterization and applications
Download or read book Handbook Of Advanced Methods And Processes In Oxidation Catalysis From Laboratory To Industry written by Daniel Duprez and published by World Scientific. This book was released on 2014-07-24 with total page 1035 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the most recent developments in both total oxidation and combustion and also in selective oxidation. For each topic, fundamental aspects are paralleled with industrial applications. The book covers oxidation catalysis, one of the major areas of industrial chemistry, outlining recent achievements, current challenges and future opportunities. One distinguishing feature of the book is the selection of arguments which are emblematic of current trends in the chemical industry, such as miniaturization, use of alternative, greener oxidants, and innovative systems for pollutant abatement. Topics outlined are described in terms of both catalyst and reaction chemistry, and also reactor and process technology.
Download or read book New Concepts in Oxidation Processes written by Eric Genty and published by MDPI. This book was released on 2020-03-06 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue of Catalysts aims to cover the recent progress and novel trends in the field of catalytic oxidation reaction. Topics addressed in this special issue concern the influence of different parameters on catalytic activity at various scales (atomic, laboratory, pilot, or industrial scales), the development of new catalytic materials of environmental or industrial importance, as well as the development of new methods, both microscopic and spectroscopic, to analyze oxidation processes.
Download or read book Photoacoustic IR Spectroscopy written by Kirk H. Michaelian and published by John Wiley & Sons. This book was released on 2010-12-01 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This invaluable and up-to-date source on instruments and applications covers everything needed to employ a technique for investigating various gases and materials, including biomaterials. It includes the latest developments in light sources, signal recovery and numerical methods. There is no other single publication that reviews the entire subject of photoacoustic infrared spectroscopy in such detail. Physicists, chemists, and spectroscopists in both academic and industrial laboratories, polymer and organic chemists, analysts in industry, forensic and government laboratories, and materials scientists will find this book to be a vital resource.
