In Situ Nmr Methods In Catalysis
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In Situ Nmr Methods In Catalysis
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Author : Joachim Bargon
language : en
Publisher: Springer
Release Date : 2007-04-18
In Situ Nmr Methods In Catalysis written by Joachim Bargon and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-04-18 with Science categories.
This will be a must-have work for scientists and practitioners in any field related to modern chemical research. It will also be highly useful for many workers in industry who are required to keep up-to-date with the latest news in chemistry and applied chemistry. So much is covered here in critical review, from the present position of developing research to future trends, that this book will still be an indispensable text ten years from now.
Solid State Nmr In Zeolite Catalysis
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Author : Jun Xu
language : en
Publisher: Springer
Release Date : 2019-05-11
Solid State Nmr In Zeolite Catalysis written by Jun Xu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-11 with Science categories.
Solid-State NMR Characterization of Heterogeneous Catalysts and Catalytic Reactions provides a comprehensive account of state-of-the-art solid-state NMR techniques and the application of these techniques in heterogeneous catalysts and related catalytic reactions. It includes an introduction to the basic theory of solid-state NMR and various frequently used techniques. Special emphasis is placed on characterizing the framework and pore structure, active site, guest-host interaction, and synthesis mechanisms of heterogeneous catalysts using multinuclear one- and two-dimensional solid-sate NMR spectroscopy. Additionally, various in-situ solid-state NMR techniques and their applications in investigation of the mechanism of industrially important catalytic reactions are also discussed. Both the fundamentals and the latest research results are covered, making the book suitable as a reference guide for both experienced researchers in and newcomers to this field. Feng Deng is a Professor at Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences.
Nmr Techniques In Catalysis
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Author : Alexis T. Bell
language : en
Publisher: CRC Press
Release Date : 2020-07-24
Nmr Techniques In Catalysis written by Alexis T. Bell and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-24 with Science categories.
This volume provides an overview of the applications of modern solid-state nuclear magnetic resonance (NMR) techniques to the study of catalysts, catalytic processes, species adsorbed on catalysts and systems relevant to heterogeneous catalysis. It characterizes the structure of catalytic materials and surfaces.
In Situ Nmr Methods In Catalysis
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Author : Joachim Bargon
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-05-15
In Situ Nmr Methods In Catalysis written by Joachim Bargon and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-05-15 with Science categories.
Achemist,facedwiththeproblemofdeterminingthemechanismofachemical reaction, tries to identify a set of reactions that will account for the observed behavior:Ideally,asmallsetofknownreactionsshoulddescribeingreatdetail exactly what takes place at each stage of a chemical transformation. The fact that many reactions proceed in a stepwise fashion can most convincingly be demonstrated if intermediate species can be isolated and shown to proceed to the same products under otherwise identical reaction conditions. An - termediate is the reaction product of each of these steps, except for the last onethatformsthe?nalproduct. Someintermediatesarestablecompoundsin theirownright;someothers,however,aresoreactivethattheirisolationisnot possible. Occasionally, evidence for the existence of short-lived intermediates may be obtained, in particular by spectroscopic observation. The latter may - low a direct observation or an indirect inference from unusual phenomena occurring in the reaction products during in situ investigations of their c- responding chemical reactions. In NMR spectroscopy, for example, transient emissionandenhanced absorptionlinesmaybeobserved, andoneisinclined to believe that there is a universal and unambiguous reason for their appe- ance. Thisisnotnecessarilythecase,however,sincethisseeminglyidentical phenomenon may have a strikingly different origin: During free radical re- tions,aphenomenoncalledchemicallyinduced dynamicnuclear polarization (CIDNP) may give rise to virtually the same effect as occasionally observed duringhomogeneous(andpossiblyevenheterogeneous)hydrogenations:The latter phenomenon, called parahydrogen-induced polarization (PHIP), has a completely different physical basis. It was ?rst noticed twenty years later than CIDNP and occurs if there is an imbalance of the two spin isomers of symmetric molecules such as dihydrogen when hydrogenating unsaturated compoundsusingappropriatecatalysts. Thesetwoeffects,ifnotdifferentiated properly, can cause misinterpretations of reaction mechanisms, as occurred initially when their different origins had not yet been understood approp- ately.
In Situ Spectroscopy In Heterogeneous Catalysis
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Author : James F. Haw
language : en
Publisher: Wiley-VCH Verlag GmbH
Release Date : 2002
In Situ Spectroscopy In Heterogeneous Catalysis written by James F. Haw and has been published by Wiley-VCH Verlag GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Heterogeneous catalysis categories.
"Not using in-situ methods to examine catalytic processes is like studying a life with access only to the prenatal and postmortem states." This quote from the world renowned specialist in the field of in situ methods, Gabor A. Somorjai, clearly emphasizes the importance of these techniques in understanding heterogeneous catalysis - a type of chemical reaction used nowadays for most chemically produced supplies and fuels. Yet the fundamental mechanisms are often still not completely understood. Many of the leading scientists in the field have contributed to this book which provides an overview of the most varied spectroscopic and related methods for studying catalytic structures and their functions during a chemical reaction. While primarily written for users of these methods, this is also a valuable aid to interpreting the phenomena observed. Indispensable for everyone working in the field.
Applications Of Epr And Nmr Spectroscopy In Homogeneous Catalysis
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Author : Evgenii Talsi
language : en
Publisher: CRC Press
Release Date : 2017-04-07
Applications Of Epr And Nmr Spectroscopy In Homogeneous Catalysis written by Evgenii Talsi and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-07 with Science categories.
This book reviews advances in important and practically relevant homogeneous catalytic transformations, such as single-site olefin polymerizations and chemo- and stereo-selective oxidations. Close attention is paid to the experimental investigation of the active sites of catalytic oxidation systems and their mechanisms. Major subjects include the applications of NMR and EPR spectroscopic techniques and data obtained by other physical methods. The book addresses a broad readership and focus on widespread techniques available in labs with NMR and EPR spectrometers.
Isotopes In Heterogeneous Catalysis
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Author : Justin S J Hargreaves
language : en
Publisher: World Scientific
Release Date : 2006-04-11
Isotopes In Heterogeneous Catalysis written by Justin S J Hargreaves and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-04-11 with Technology & Engineering categories.
The purpose of this book is to review the current, state-of-the-art application of isotopic methods to the field of heterogeneous catalysis. Isotopic studies are arguably the ultimate technique in in situ methods for heterogeneous catalysis. In this review volume, chapters have been contributed by experts in the field and the coverage includes both the application of specific isotopes — Deuterium, Tritium, Carbon-14, Sulfur-35 and Oxygen-18 – as well as isotopic techniques — determination of surface mobility, steady state transient isotope kinetic analysis, and positron emission profiling. Contents:Deuterium-Labelling in Mechanistic Studies on Heterogeneous Acid-Base Catalysts (J Sommer & S Walspurger)Application of 14C Radiotracer for the Study of Heterogeneous Catalytic Reactions (Z Paál)Use of 35S Radiotracer in Catalytic Studies (P Tétényi)Tritium in Catalysis (J R Jones & S-Y Lu)Isotopic Exchange of Oxygen Over Oxide Surfaces (J S J Hargreaves & I M Mellor)Oxygen and Hydrogen Surface Mobility in Supported Metal Catalysts. Study by 18O/16O and 2H/1H Exchange (D Duprez)Investigation of Reaction at the Site Level Using SSITKA (S Pansare, A Sirijaruphan & J G Goodwin, Jr.)Positron Emission Profiling — The Ammonia Oxidation Reaction as a Case Study (A M de Jong, E J M Hensen & R A van Santen) Readership: Academic and researchers, as well as postgraduate students in catalysis. Key Features:Addresses a unique niche in the market, outlining the breadth and depth of the application of isotopic methodsContributions by internationally leading groups in the area of heterogeneous catalysisOf general global interest without geographical restrictionsKeywords:Heterogeneous Catalysis;Isotopes;Carbon-14;Oxygen-18;Sulfur-35;Deuterium;Tritium;Kinetics
Nmr And Mri Of Electrochemical Energy Storage Materials And Devices
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Author : Yong Yang
language : en
Publisher: Royal Society of Chemistry
Release Date : 2021-06-17
Nmr And Mri Of Electrochemical Energy Storage Materials And Devices written by Yong Yang and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-17 with Science categories.
Energy storage material is a hot topic in material science and chemistry. During the past decade, nuclear magnetic resonance (NMR) has emerged as a powerful tool to aid understanding of the working and failing mechanisms of energy storage materials and devices. The aim of this book is to introduce the use of NMR methods for investigating electrochemical storage materials and devices. Presenting a comprehensive overview of NMR spectroscopy and magnetic resonance imaging (MRI) on energy storage materials, the book will include the theory of paramagnetic interactions and relevant calculation methods, a number of specific NMR approaches developed in the past decade for battery materials (e.g. in situ, ex situ NMR, MRI, DNP, 2D NMR, NMR dynamics) and case studies on a variety of related materials. Helping both NMR spectroscopists entering the field of batteries and battery specialists seeking diagnostic methods for material and device degradation, it is written by leading authorities from international research groups in this field.
In Situ Spectroscopy Of Catalysts
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Author : Bert M. Weckhuysen
language : en
Publisher:
Release Date : 2004
In Situ Spectroscopy Of Catalysts written by Bert M. Weckhuysen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Science categories.
Weckhuysen (inorganic chemistry and catalysis, Utrecht University, The Netherlands) covers a range of analytical techniques for investigating the active site and the related reaction mechanism in a working catalyst, offering an overview of the possibilities and limitations of these analytical techniques and covering the latest developments in the field. Techniques are divided into sections on in situ vibrational spectroscopy, in situ X-ray absorption spectroscopy, in situ magnetic resonance techniques, and other in situ characterization techniques. The book is for chemists and chemical engineers. Annotation :2005 Book News, Inc., Portland, OR (booknews.com).
Nuclear Magnetic Resonance
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Author : G. A. Webb
language : en
Publisher: Royal Society of Chemistry
Release Date : 2009
Nuclear Magnetic Resonance written by G. A. Webb and has been published by Royal Society of Chemistry this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Medical categories.
For those wanting to become rapidly acquainted with specific areas of NMR, this title provides unrivalled scope of coverage. Applications of NMR span a wide range of scientific disciplines, from physics to biology to medicine. Each volume in this series comprises a combination of reports offering comprehensive coverage of the literature on this topic. For those wanting to become rapidly acquainted with specific areas of NMR this title provides unrivalled scope of coverage. Seasoned practitioners of NMR will find this an invaluable source of current methods and applications. Reviews include literature published from June 2007 to May 2008.