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Author : Azzam Nouman Mansour
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (113 download)
Download or read book X-ray Absorption Studies of Silica-supported Platinum Catalysts written by Azzam Nouman Mansour and published by . This book was released on 1983 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yasuhiro Iwasawa
Publisher : World Scientific
ISBN 13 : 9789810223236
Total Pages : 438 pages
Book Rating : 4.2/5 (232 download)
Download or read book X-ray Absorption Fine Structure for Catalysts and Surfaces written by Yasuhiro Iwasawa and published by World Scientific. This book was released on 1996 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray absorption fine structure (XAFS) is a powerful technique in characterization of structures and electronic states of materials in many research fields including, e.g., catalysts, semiconductors, optical ingredients, magnetic materials, and surfaces. This characterization technique could be applied in a static or a dynamic state (in-situ condition). The XAFS can provide information that is not accessible by other techniques for characterization of materials, particularly catalysts and related surfaces. Furthermore, XAFS can provide a molecular-level approach to the study of reaction mechanisms for the understanding of catalysts and development of new catalysts. A number of synchrotron radiation facilities have been planned to be built in Asian countries in addition to the high-brilliant synchrotron radiation facilities under construction in the USA, Europe, and Japan. The applications of XAFS have now expanded to catalytic chemistry and engineering, surface science, organometallic chemistry, materials science, solid-state chemistry, geophysics, etc. This book caters to a wide range of researchers and students working in the domain or related topics.
Author : Yasuhiro Iwasawa
Publisher : World Scientific
ISBN 13 : 9814500194
Total Pages : 428 pages
Book Rating : 4.8/5 (145 download)
Download or read book X-ray Absorption Fine Structure For Catalysts And Surfaces written by Yasuhiro Iwasawa and published by World Scientific. This book was released on 1996-05-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray absorption fine structure (XAFS) is a powerful technique in characterization of structures and electronic states of materials in many research fields including, e.g., catalysts, semiconductors, optical ingredients, magnetic materials, and surfaces. This characterization technique could be applied in a static or a dynamic state (in-situ condition). The XAFS can provide information that is not accessible by other techniques for characterization of materials, particularly catalysts and related surfaces. Furthermore, XAFS can provide a molecular-level approach to the study of reaction mechanisms for the understanding of catalysts and development of new catalysts. A number of synchrotron radiation facilities have been planned to be built in Asian countries in addition to the high-brilliant synchrotron radiation facilities under construction in the USA, Europe, and Japan. The applications of XAFS have now expanded to catalytic chemistry and engineering, surface science, organometallic chemistry, materials science, solid-state chemistry, geophysics, etc. This book caters to a wide range of researchers and students working in the domain or related topics.
Author : Jagdeep Singh
Publisher :
ISBN 13 :
Total Pages : 193 pages
Book Rating : 4.:/5 (732 download)
Download or read book Determination of the Active Sites in Supported Platinum Catalysts by Means of X-ray Absorption and Emission Spectroscopy written by Jagdeep Singh and published by . This book was released on 2010 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthew James Lundwall
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (78 download)
Download or read book Characterization and Reaction Studies of Silica Supported Platinum and Rhodium Model Catalysts written by Matthew James Lundwall and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The physical and catalytic properties of silica supported platinum or rhodium model catalysts are studied under both ultra high vacuum (UHV) and elevated pressure reaction conditions (>1torr). Platinum or rhodium nanoparticles are vapor deposited onto a SiO2/Mo(112) surface and characterized using various surface analytical methods. CO chemisorption is utilized as a surface probe to estimate the concentration of various sites on the nanoparticles through thermal desorption spectroscopy (TDS) and infrared reflection absorption spectroscopy (IRAS) along with microscopy techniques to estimate particle size. The results are compared with hard sphere models of face centered cubic metals described as truncated cubo-octahedron. Results demonstrate the excellent agreement between chemisorption and hard sphere models in estimating the concentration of undercoordinated atoms on the nanoparticle surface. Surfaces are then subjected to high pressure reaction conditions to test the efficacy of utilizing the rate of a chemical reaction to obtain structural information about the surface. The surfaces are translated in-situ to a high pressure reaction cell where both structure insensitive and sensitive reactions are performed. Structure insensitive reactions (e.g. CO oxidation) allow a method to calculate the total active area on a per atom basis for silica supported platinum and rhodium model catalysts under reaction conditions. While structure sensitive reactions allow an estimate of the types of reaction sites, such as step sites ([less than or equal to]C7) under reaction conditions (e.g. n-heptane dehydrocyclization). High pressure structure sensitive reactions (e.g. ethylene hydroformylation) are also shown to drastically alter the morphology of the surface by dispersing nanoparticles leading to inhibition of catalytic pathways. Moreover, the relationships between high index single crystals, oxide supported nanoparticles, and high surface area technical catalysts are established. Overall, the results demonstrate the utility of model catalysts in understanding the structure-activity relationships in heterogeneous catalytic reactions and the usefulness of high pressure reactions as an analytical probe of surface morphology.
Author : United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Development and Applications
Publisher :
ISBN 13 :
Total Pages : 1674 pages
Book Rating : 4.3/5 (91 download)
Download or read book Fiscal year 1985 Department of Energy authorization written by United States. Congress. House. Committee on Science and Technology. Subcommittee on Energy Development and Applications and published by . This book was released on 1985 with total page 1674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert B. Anderson
Publisher : Academic Press
ISBN 13 : 1483191419
Total Pages : 301 pages
Book Rating : 4.4/5 (831 download)
Download or read book Experimental Methods in Catalytic Research written by Robert B. Anderson and published by Academic Press. This book was released on 2013-10-22 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: Preparation and Examination of Practical Catalysts: Volume II deals with preparing and examining practical catalysts and provides useful accounts of methods used in catalytic research by specialists. The text covers topics such as molecular sieve zeolites – the estimation of zeolite purity and zeolite modification, the introduction of catalytically active components, and the methods of preparation and characterization of supported metal catalysts. Also covered are topics such as the use of the electron probe microanalyzer in catalysts, electron microscopy - related instruments, principles in scanning electron microscopy, and the principles and specimen preparation in transmission electron microscopy; Mössbauer spectroscopy, and microbalances in adsorption and catalysts. The book is recommended for chemists who would like to know more about the preparation and usage of catalysts, as well as the studies on the field.
Author : Grant Bunker
Publisher : Cambridge University Press
ISBN 13 : 1139485091
Total Pages : 269 pages
Book Rating : 4.1/5 (394 download)
Download or read book Introduction to XAFS written by Grant Bunker and published by Cambridge University Press. This book was released on 2010-01-28 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray absorption fine structure spectroscopy (XAFS) is a powerful and versatile technique for studying structures of materials in chemistry, physics, biology and other fields. This textbook is a comprehensive, practical guide to carrying out and interpreting XAFS experiments. Assuming only undergraduate-level physics and mathematics, the textbook is ideally suited for graduate students in physics and chemistry starting XAFS-based research. It contains concise executable example programs in Mathematica 7. Supplementary material available at www.cambridge.org/9780521767750 includes Mathematica code from the book, related Mathematica programs, and worked data analysis examples. The textbook addresses experiment, theory, and data analysis, but is not tied to specific data analysis programs or philosophies. This makes it accessible to a broad audience in the sciences, and a useful guide for researchers entering the subject.
Author : Bert Sels
Publisher : John Wiley & Sons
ISBN 13 : 3527699813
Total Pages : 1500 pages
Book Rating : 4.5/5 (276 download)
Download or read book Nanotechnology in Catalysis written by Bert Sels and published by John Wiley & Sons. This book was released on 2017-06-21 with total page 1500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflecting the R&D efforts in the field that have resulted in a plethora of novel applications over the past decade, this handbook gives a comprehensive overview of the tangible benefits of nanotechnology in catalysis. By bridging fundamental research and industrial development, it provides a unique perspective on this scientifically and economically important field. While the first three parts are devoted to preparation and characterization of nanocatalysts, the final three provide in-depth insights into their applications in the fine chemicals industry, the energy industry, and for environmental protection, with expert authors reporting on real-life applications that are on the brink of commercialization. Timely reading for catalytic chemists, materials scientists, chemists in industry, and process engineers.
Author : Andrzej Wieckowski
Publisher : Routledge
ISBN 13 : 1351437569
Total Pages : 1008 pages
Book Rating : 4.3/5 (514 download)
Download or read book Interfacial Electrochemistry written by Andrzej Wieckowski and published by Routledge. This book was released on 2017-11-22 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text probes topics and reviews progress in interfacial electrochemistry. It supplies chapter abstracts to give readers a concise overview of individual subjects and there are more than 1500 drawings, photographs, micrographs, tables and equations. The 118 contributors are international scholars who present theory, experimentation and applications.
Author : John C. Riviere
Publisher : CRC Press
ISBN 13 : 1420007807
Total Pages : 671 pages
Book Rating : 4.4/5 (2 download)
Download or read book Handbook of Surface and Interface Analysis written by John C. Riviere and published by CRC Press. This book was released on 2009-06-24 with total page 671 pages. Available in PDF, EPUB and Kindle. Book excerpt: The original Handbook of Surface and Interface Analysis: Methods for Problem-Solving was based on the authors' firm belief that characterization and analysis of surfaces should be conducted in the context of problem solving and not be based on the capabilities of any individual technique. Now, a decade later, trends in science and technology appear
Author :
Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John Regalbuto
Publisher : CRC Press
ISBN 13 : 1420006509
Total Pages : 490 pages
Book Rating : 4.4/5 (2 download)
Download or read book Catalyst Preparation written by John Regalbuto and published by CRC Press. This book was released on 2016-04-19 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explores the optimization of catalytic materials through traditional and novel methods of catalyst preparation, characterization, and monitoring for oxides, supported metals, zeolites, and heteropolyacids. It focuses on the synthesis of bulk materials and of heterogeneous materials, particularly at the nanoscale. The final chapters examine pretreatment, drying, finishing effects, and future applications involving catalyst preparation and the technological advances necessary for continued progress. Topics also include heat and mass transfer limitations, computation methods for predicting properties, and catalyst monitoring on laboratory and industrial scales.
Author : Masakazu Anpo
Publisher : Gulf Professional Publishing
ISBN 13 : 9780444513496
Total Pages : 612 pages
Book Rating : 4.5/5 (134 download)
Download or read book Science and Technology in Catalysis written by Masakazu Anpo and published by Gulf Professional Publishing. This book was released on 2003-07-09 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: (Selected) -- Plenary Lecures: New Catalysts for Controlled/Living Atom Transfer Radical Polymerization (ATRP; Catalysis and Applications of Gold Nanoparticles -- Oral Presentations: Ionic Liquids as New Solvents and Catalysis for Petrochemical and Refining Processes; High Throughput Experiment on the Investigation of Oxidation Catalysts with Gas Sensor System -- Poster Presentations: Development of a Low-Temperature Dioxin Decomposition Catalyst; Studies on Unique Properties of Polyolefins Prepared with Metallocene Catalyst Systems -- Index.
Author : Yoshio Waseda
Publisher : Springer
ISBN 13 : 354046008X
Total Pages : 224 pages
Book Rating : 4.5/5 (44 download)
Download or read book Anomalous X-Ray Scattering for Materials Characterization written by Yoshio Waseda and published by Springer. This book was released on 2003-07-01 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of multi layered thin films with sufficient reliability is a key technology for device fabrication in micro electronics. In the Co/Cu type multi layers, for example, magnetoresistance has been found as large as 80 % at 4. 2 K and 50 % at room temperature. In addition to such gigantic mag netoresistance, these multi layers indicate anti ferromagnetic and ferromag netic oscillation behavior with an increase in the thickness of the layers of the non magnetic component. These interesting properties of the new synthetic flmctional materials are attributed to their periodic and interracial structures at a microscopic level, although the origin of such peculiar features is not fully understood. Information on the surface structure or the number density of atoms in the near surface region may provide better insight. Amorphous alloys, frequently referred to as metallic glasses, are produced by rapid quenching from the melt. The second generation amorphous alloys, called "bulk amorphous alloys", have been discovered in some Pd based and Zr based alloy systems, with a super cooled liquid region at more than 120 K. In these alloy systems, one can obtain a sample thickness of several centime ters. Growing scientific and technological curiosity about the new amorphous alloys has focused on the fundamental factors, such as the atomic scale struc ture, which are responsible for the thermal stability with certain chemical compositions.
Author : Robert Rioux
Publisher : Springer Science & Business Media
ISBN 13 : 0387980490
Total Pages : 531 pages
Book Rating : 4.3/5 (879 download)
Download or read book Model Systems in Catalysis written by Robert Rioux and published by Springer Science & Business Media. This book was released on 2009-11-11 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an excellent compilation of cutting-edge research in heterogeneous catalysis and related disciplines – surface science, organometallic catalysis, and enzymatic catalysis. In 23 chapters by noted experts, the volume demonstrates varied approaches using model systems and their successes in understanding aspects of heterogeneous catalysis, both metal- and metal oxide-based catalysis in extended single crystal and nanostructured catalytic materials. To truly appreciate the astounding advances of modern heterogeneous catalysis, let us first consider the subject from a historical perspective. Heterogeneous catalysis had its beginnings in England and France with the work of scientists such as Humphrey Davy (1778–1829), Michael Faraday (1791–1867), and Paul Sabatier (1854–1941). Sabatier postulated that surface compounds, si- lar to those familiar in bulk to chemists, were the intermediate species leading to catalytic products. Sabatier proposed, for example, that NiH moieties on a Ni sur- 2 face were able to hydrogenate ethylene, whereas NiH was not. In the USA, Irving Langmuir concluded just the opposite, namely, that chemisorbed surface species are chemically bound to surfaces and are unlike known molecules. These chemisorbed species were the active participants in catalysis. The equilibrium between gas-phase molecules and adsorbed chemisorbed species (yielding an adsorption isotherm) produced a monolayer by simple site-filling kinetics.
Author : Marvin L. Deviney
Publisher :
ISBN 13 :
Total Pages : 640 pages
Book Rating : 4.3/5 (91 download)
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.
