Production of olefins via oxidative de-hydrogenation of C3‒C4 fraction by O2 over (Cr‒Mo)SiO2

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Publisher : GRIN Verlag
ISBN 13 : 3656900027
Total Pages : 22 pages
Book Rating : 4.6/5 (569 download)

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Book Synopsis Production of olefins via oxidative de-hydrogenation of C3‒C4 fraction by O2 over (Cr‒Mo)SiO2 by : Ayodeji Ijagbuji

Download or read book Production of olefins via oxidative de-hydrogenation of C3‒C4 fraction by O2 over (Cr‒Mo)SiO2 written by Ayodeji Ijagbuji and published by GRIN Verlag. This book was released on 2015-02-18 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research Paper (postgraduate) from the year 2015 in the subject Chemistry - Organic Chemistry, , language: English, abstract: The present study investigates the oxidative dehydrogenation of propane-butane (C3–C4) fraction over mono (Cr or Mo) and bi-metal (Cr-Mo) loaded SiO2 catalysts. The catalysts were prepared by sequential impregnation method at 500oC calcination temperature. Experiments were performed by feeding C3–C4 fraction, oxygen, nitrogen, and steam into a continuous flow quartz reactor at an atmospheric pressure (P = 1 atm.), reaction temperatures between 500 – 650oC, gas hourly space velocity (GHSV) within 100 – 400 h-1, and at reaction time (tr) = 2h. Appropriate water vapor addition to the feed sinificantly minimizes oxidation into coke deposits on the catalyst surface, and also prevents further olefin conversion into undesirable product. The physicochemical properties were evaluated by BET, XRD, IR, and EPR characterization techniques. The major oxidation products are ethylene, propylene, isobutylene, butylene. This paper reports that the total yield of olefins (Ʃ C2-C4) = 66.0 % was achieved at 83.5 % conversion level of C3–C4 at 630oC. The results indicate that the addition of Mo to catalysts of Cr/SiO2 modifies its catalytic activity for the ODH reaction. Mono-metallic catalysts (Cr/SiO2 and Mo/SiO2) were prepared for comparison purposes.

Coal Gasification and Its Applications

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Publisher : William Andrew
ISBN 13 : 1437778518
Total Pages : 414 pages
Book Rating : 4.4/5 (377 download)

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Book Synopsis Coal Gasification and Its Applications by : David A. Bell

Download or read book Coal Gasification and Its Applications written by David A. Bell and published by William Andrew. This book was released on 2010-12-08 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Skyrocketing energy costs have spurred renewed interest in coal gasification. Currently available information on this subject needs to be updated, however, and focused on specific coals and end products. For example, carbon capture and sequestration, previously given little attention, now has a prominent role in coal conversion processes.This book approaches coal gasification and related technologies from a process engineering point of view, with topics chosen to aid the process engineer who is interested in a complete, coal-to-products system. It provides a perspective for engineers and scientists who analyze and improve components of coal conversion processes.The first topic describes the nature and availability of coal. Next, the fundamentals of gasification are described, followed by a description of gasification technologies and gas cleaning processes. The conversion of syngas to electricity, fuels and chemicals is then discussed. Finally, process economics are covered. Emphasis is given to the selection of gasification technology based on the type of coal fed to the gasifier and desired end product: E.g., lower temperature gasifiers produce substantial quantities of methane, which is undesirable in an ammonia synthesis feed. This book also reviews gasification kinetics which is informed by recent papers and process design studies by the US Department of Energy and other groups, and also largely ignored by other gasification books.• Approaches coal gasification and related technologies from a process engineering point of view, providing a perspective for engineers and scientists who analyze and improve components of coal conversion processes • Describes the fundamentals of gasification, gasification technologies, and gas cleaning processes • Emphasizes the importance of the coal types fed to the gasifier and desired end products • Covers gasification kinetics, which was largely ignored by other gasification books - Provides a perspective for engineers and scientists who analyze and improve components of the coal conversion processes - Describes the fundamentals of gasification, gasification technologies, and gas cleaning processes - Covers gasification kinetics, which was largely ignored by other gasification books

Energetics of Stable Molecules and Reactive Intermediates

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Publisher : Springer
ISBN 13 : 9780792357414
Total Pages : 0 pages
Book Rating : 4.3/5 (574 download)

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Book Synopsis Energetics of Stable Molecules and Reactive Intermediates by : M.E. Minas da Piedade

Download or read book Energetics of Stable Molecules and Reactive Intermediates written by M.E. Minas da Piedade and published by Springer. This book was released on 1999-05-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the major experimental and theoretical methods currently used to study the energetics of stable molecules and reactive intermediates. Reviews the ate of the art and shows the interplay of experimental and theoretical methods used to probe bonding energetics and reactivity and a wide range of chemical species. A modern and invaluable introduction to the study of molecular energetics. A reference for workers currently involved in the field.

Fundamentals of Metallurgy

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Publisher : Elsevier
ISBN 13 : 184569094X
Total Pages : 589 pages
Book Rating : 4.8/5 (456 download)

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Book Synopsis Fundamentals of Metallurgy by : S Seetharaman

Download or read book Fundamentals of Metallurgy written by S Seetharaman and published by Elsevier. This book was released on 2005-10-10 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: As product specifications become more demanding, manufacturers require steel with ever more specific functional properties. As a result, there has been a wealth of research on how those properties emerge during steelmaking. Fundamentals of metallurgy summarises this research and its implications for manufacturers.The first part of the book reviews the effects of processing on the properties of metals with a range of chapters on such phenomena as phase transformations, types of kinetic reaction, transport and interfacial phenomena. Authors discuss how these processes and the resulting properties of metals can be modelled and predicted. Part two discusses the implications of this research for improving steelmaking and steel properties.With its distinguished editor and international team of contributors, Fundamentals of metallurgy is an invaluable reference for steelmakers and manufacturers requiring high-performance steels in such areas as automotive and aerospace engineering. It will also be useful for those dealing with non-ferrous metals and alloys, material designers for functional materials, environmentalists and above all, high technology industries designing processes towards materials with tailored properties. - Summarises key research and its implications for manufacturers - Essential reading for steelmakers and manufacturers - Written by leading experts from both industry and academia

Solid State Chemistry

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Publisher : CRC Press
ISBN 13 : 0429648669
Total Pages : 446 pages
Book Rating : 4.4/5 (296 download)

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Book Synopsis Solid State Chemistry by : Elaine A. Moore

Download or read book Solid State Chemistry written by Elaine A. Moore and published by CRC Press. This book was released on 2020-08-03 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A comprehensive guide to solid-state chemistry which is ideal for all undergraduate levels. It covers well the fundamentals of the area, from basic structures to methods of analysis, but also introduces modern topics such as sustainability." Dr. Jennifer Readman, University of Central Lancashire, UK "The latest edition of Solid State Chemistry combines clear explanations with a broad range of topics to provide students with a firm grounding in the major theoretical and practical aspects of the chemistry of solids." Professor Robert Palgrave, University College London, UK Building a foundation with a thorough description of crystalline structures, this fifth edition of Solid State Chemistry: An Introduction presents a wide range of the synthetic and physical techniques used to prepare and characterise solids. Going beyond this, this largely nonmathematical introduction to solid-state chemistry includes the bonding and electronic, magnetic, electrical, and optical properties of solids. Solids of particular interest—porous solids, superconductors, and nanostructures—are included. Practical examples of applications and modern developments are given. It offers students the opportunity to apply their knowledge in real-life situations and will serve them well throughout their degree course. New in the Fifth Edition A companion website which offers accessible resources for students and instructors alike, featuring topics and tools such as quizzes, videos, web links and more A new chapter on sustainability in solid-state chemistry written by an expert in this field Cryo-electron microscopy X-ray photoelectron spectroscopy (ESCA) Covalent organic frameworks Graphene oxide and bilayer graphene Elaine A. Moore studied chemistry as an undergraduate at Oxford University and then stayed on to complete a DPhil in theoretical chemistry with Peter Atkins. After a two-year postdoctoral position at the University of Southampton, she joined the Open University in 1975, becoming a lecturer in chemistry in 1977, senior lecturer in 1998, and reader in 2004. She retired in 2017 and currently has an honorary position at the Open University. She has produced OU teaching texts in chemistry for courses at levels 1, 2, and 3 and written texts in astronomy at level 2 and physics at level 3. She was team leader for the production and presentation of an Open University level 2 chemistry module delivered entirely online. She is a Fellow of the Royal Society of Chemistry and a Senior Fellow of the Higher Education Academy. She was co-chair for the successful Departmental submission of an Athena Swan bronze award. Lesley E. Smart studied chemistry at Southampton University, United Kingdom. After completing a PhD in Raman spectroscopy, she moved to a lectureship at the (then) Royal University of Malta. After returning to the United Kingdom, she took an SRC Fellowship to Bristol University to work on X-ray crystallography. From 1977 to 2009, she worked at the Open University chemistry department as a lecturer, senior lecturer, and Molecular Science Programme director, and she held an honorary senior lectureship there until her death in 2016. At the Open University, she was involved in the production of undergraduate courses in inorganic and physical chemistry and health sciences. She served on the Council of the Royal Society of Chemistry and as the chair of their Benevolent Fund.

Specific Heat, Enthalpy, and Entropy of Uranyl Fluoride

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Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Specific Heat, Enthalpy, and Entropy of Uranyl Fluoride by : Paul F. Wacker

Download or read book Specific Heat, Enthalpy, and Entropy of Uranyl Fluoride written by Paul F. Wacker and published by . This book was released on 1947 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

The Characterization of High-temperature Vapors

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Publisher :
ISBN 13 :
Total Pages : 580 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis The Characterization of High-temperature Vapors by : John L. Margrave

Download or read book The Characterization of High-temperature Vapors written by John L. Margrave and published by . This book was released on 1967 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Publications of the National Bureau of Standards, 1966-1967

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Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Publications of the National Bureau of Standards, 1966-1967 by : United States. National Bureau of Standards

Download or read book Publications of the National Bureau of Standards, 1966-1967 written by United States. National Bureau of Standards and published by . This book was released on 1969 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Technical News Bulletin

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Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Technical News Bulletin by :

Download or read book Technical News Bulletin written by and published by . This book was released on 1967 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

List of Available Publications

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Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (2 download)

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Book Synopsis List of Available Publications by : United States. Farm Security Administration

Download or read book List of Available Publications written by United States. Farm Security Administration and published by . This book was released on 1941 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Molecular Energetics

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Publisher : Oxford University Press
ISBN 13 : 0199722854
Total Pages : 305 pages
Book Rating : 4.1/5 (997 download)

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Book Synopsis Molecular Energetics by : José A. Martinho Simões

Download or read book Molecular Energetics written by José A. Martinho Simões and published by Oxford University Press. This book was released on 2008-07-14 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a broad discussion of the concepts required to understand the thermodynamic stability of molecules and bonds and a description of the most important condensed-phase techniques that have been used to obtain that information. Above all, this book attempts to provide useful guidelines on how to choose the "best" data and how to use it to understand chemistry. Although the book assumes some basic knowledge on physical-chemistry, it has been written in a "textbook" style and most topics are addressed in a way that is accessible to advanced undergraduate students. Many examples are given throughout the text, involving a variety of molecules. This text will provide a good starting point for those who wish to initiate in the field or simply to understand how to assess, to estimate, and to use thermochemical data. It will therefore appeal to a broad range of practicing chemists and particularly to those interested in energetics-structure-reactivity relationships.

Combustion Calorimetry

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Publisher : Elsevier
ISBN 13 : 1483280896
Total Pages : 455 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Combustion Calorimetry by : Stig Sunner

Download or read book Combustion Calorimetry written by Stig Sunner and published by Elsevier. This book was released on 2016-06-03 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental Chemical Thermodynamics, Volume 1: Combustion Calorimetry covers the advances in calorimetric study of combustion, with particular emphasis on the accuracy of the method. This book is composed of 18 chapters, and begins with a presentation of the units and physical constants with the basic units of measurements. The succeeding chapters deal with basic principles of combustion calorimetry, emphasizing the underlying basic principles of measurement. These topics are followed by discussions on calibration of combustion calorimeters, test and auxiliary substances in combustion calorimetry, strategies in the calculation of standard-state energies of combustion from the experimentally determined quantities, and assignment of uncertainties. The final chapter considers the history of combustion calorimetry. This book will prove useful to combustion chemists and engineers, as well as researchers in the allied fields.

Solid State Chemistry and Its Applications

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Publisher : John Wiley & Sons
ISBN 13 : 9780471908746
Total Pages : 752 pages
Book Rating : 4.9/5 (87 download)

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Book Synopsis Solid State Chemistry and Its Applications by : Anthony R. West

Download or read book Solid State Chemistry and Its Applications written by Anthony R. West and published by John Wiley & Sons. This book was released on 1991-01-08 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first broad account offering a non-mathematical, unified treatment of solid state chemistry. Describes synthetic methods, X-ray diffraction, principles of inorganic crystal structures, crystal chemistry and bonding in solids; phase diagrams of 1, 2 and 3 component systems; the electrical, magnetic, and optical properties of solids; three groups of industrially important inorganic solids--glass, cement, and refractories; and certain aspects of organic solid state chemistry, including the ``organic metal'' of new materials.

Experimental Thermodynamics

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Publisher : Elsevier
ISBN 13 : 1483280268
Total Pages : 1345 pages
Book Rating : 4.4/5 (832 download)

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Book Synopsis Experimental Thermodynamics by : B. Le Neindre

Download or read book Experimental Thermodynamics written by B. Le Neindre and published by Elsevier. This book was released on 2013-10-22 with total page 1345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental Thermodynamics, Volume II: Experimental Thermodynamics of Non-reacting Fluids focuses on experimental methods and procedures in the study of thermophysical properties of fluids. The selection first offers information on methods used in measuring thermodynamic properties and tests, including physical quantities and symbols for physical quantities, thermodynamic definitions, and definition of activities and related quantities. The text also describes reference materials for thermometric fixed points, temperature measurement under pressures, and pressure measurements. The publication takes a look at absolute measurement of volume and equation of state of gases at high temperatures and low or moderate temperatures. Discussions focus on volumes of cubes of fused silica, density of water, and methods of measuring pressure. The text also examines the compression of liquids and thermodynamic properties and velocity of sound, including thermodynamics of volume changes, weight methods, and adiabatic compression. The selection is a dependable reference for readers interested in the thermophysical properties of fluids.

Metal-ligand Bonding

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Publisher : Royal Society of Chemistry
ISBN 13 : 9780854049790
Total Pages : 116 pages
Book Rating : 4.0/5 (497 download)

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Book Synopsis Metal-ligand Bonding by : Rob Janes

Download or read book Metal-ligand Bonding written by Rob Janes and published by Royal Society of Chemistry. This book was released on 2004 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The material addressed in this book forms the foundation of undergraduate lecture courses on d-block chemistry and facilitates learning through various key features.

Processes and mechanisms of welding residual stress and distortion

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Publisher : CRC Press
ISBN 13 : 9780849334672
Total Pages : 372 pages
Book Rating : 4.3/5 (346 download)

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Book Synopsis Processes and mechanisms of welding residual stress and distortion by : Zhili Feng

Download or read book Processes and mechanisms of welding residual stress and distortion written by Zhili Feng and published by CRC Press. This book was released on 2005-11-01 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a fabrication technology, welding presents a number of technical challenges to the designer, manufacturer, and end-user of the welded structures. Both weld residual stress and distortion can significantly impair the performance and reliability of the welded structures. They must be properly dealt with during design, fabrication, and in-service use of the welded structures. There have been many significant and exciting developments on the subject in the past ten to fifteen years. Measurement techniques have been improved significantly. More importantly, the development of computational welding mechanics methods has been phenomenal. The progresses in the last decade or so have not only greatly expanded our fundamental understanding of the processes and mechanisms of residual stress and distortion during welding, but also have provided powerful tools to quantitatively determine the detailed residual stress and distortion information for a given welded structure. New techniques for effective residual stress and distortion mitigations and controls have also been applied in different industry sectors. Processes and Mechanisms of Welding Residual Stress and Distortion provides a comprehensive summary on the developments in the subject. It outlines theoretical treatments on heat transfer, solid mechanics and materials behavior that are essential for understanding and determining the welding residual stress and distortion. The approaches for computational methods and analysis methodology are described so that non specialists can follow them. There are chapters devoted to the discussion of various techniques for control and mitigation of residual stress and distortion, and residual stress and distortion results for various typical welded structures are provided. The second half of the book looks at case studies and practical solutions and provides insights into the techniques, challenges, limitations and future trends of each application. This book will not only be useful for advanced analysis of the subject, but also provide sufficient examples and practical solutions for welding engineers. With a panel of leading experts this authoritative book will be a valuable resource for welding engineers and designers as well as academics working in the fields of structural and mechanical engineering.

Basic Radio Propagation Predictions

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Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Basic Radio Propagation Predictions by :

Download or read book Basic Radio Propagation Predictions written by and published by . This book was released on 1958 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: