Sels D'imidazolium Avec Des Anions Catalytiques PDF Download
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Author: Vincent Gauchot
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Vincent Gauchot
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Hervé Clavier
Publisher:
ISBN:
Category :
Languages : fr
Pages : 267
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Ce travail traite du développement de nouveaux systèmes catalytiques : catalyseurs supportés et ligands chiraux pour la catalyse asymétrique. Premièrement, de nouveaux catalyseurs au ruthénium greffés sur un motif imidazolium ont été développés pour réaliser des métathèses d'oléfines dans liquides ioniques. De hauts niveaux de recyclages et une bonne réactivité ont été obtenus pour des réactions de métathèses de fermeture de cycles. De faibles valeurs de contamination en ruthénium ont été détectées dans les produits de métathèse cyclisante. Deuxièmement, un design de nouveaux ligands carbènes N-hétérocycliques (CNH) chiraux a été effectué dans le but de réaliser des additions conjuguées énantiosélectives. Des hautes réactivités et d'excellentes énantiosélectivités ont été obtenues avec des alkoxy-CNH bidentates qui ont été synthétisés à partir de β-aminoalcools commerciaux, sur diverses énones cycliques et avec différents dialkylzinc.
Author: Angel A. J. Torriero
Publisher: Springer
ISBN: 331913485X
Category : Science
Languages : en
Pages : 358
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This set of two books dedicated to presenting the latest novel and advanced research from around the world in this exciting area. These books highlight the important properties of electrochemistry in ionic liquids – as opposed to the more commonly used aqueous and organic environments – and the many applications. Readers will find 20 chapters gathered in two books: The first volume critically discusses electrode-electrolyte interfacial processes, reference electrodes, ultramicroelectrode voltammetry and scanning electrochemical microscopy, semi-integral and convolution voltammetry, and small-angle X-ray scattering coupled with voltammetry. The structure and properties of protic ionic liquids, deep-eutectic solvents, task-specific ionic liquids, polymeric ion gels, and lithium-ion solvation, useful for electrochemical application is also critically discussed The second volumes major topics covered in this book include electrodeposition and electroless deposition, voltammetry of adhered microparticles, electrochemistry of organic and organometallic compounds, electrocatalytic reactions, oxygen reduction reaction, ionic liquids in surface protection and lubrication, current industrial application of ionic liquids, and challenges, issues and recycling methods of ionic liquids in industrial developments.
Author: Sudarsanam Putla
Publisher: ACS Symposium
ISBN: 9780841298804
Category : Science
Languages : en
Pages : 608
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Advances and applications of nanosized catalysts Over the last five years, tremendous advances have been made in heterogeneous catalysis. In particular, catalysts' design from the bulk to nano-scale (1-100 nm), with desirable active sites, has received great attention in current catalysis research with the aim to fill the gap between homogeneous and heterogeneous catalysis. This volume focuses on applications of nanosized catalysts. Articles describe characterization, synthesis, and applications in biomass conversion, auto-exhaust purification, selective oxidation/hydrogenation, syngas conversion, and other important reactions. Readers will find examples of catalysts designed to be tunable for specific outcomes, inspiring their research. Scientists and engineers in chemistry, materials science, nanotechnology, and chemical engineering will find this volume useful.
Author: Thomas Cudworth Waddington
Publisher:
ISBN:
Category : Nonaqueous solvents
Languages : en
Pages : 594
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Author: Kensal Edward Van Holde
Publisher: Prentice Hall
ISBN: 9780130464279
Category : Biochemistry
Languages : en
Pages : 0
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Book Description
The Second Edition of Principles of Physical Biochemistry provides the most current look at the theory and techniques used in the study of the physical chemistry of biological and biochemical molecules--including discussion of mass spectrometry and single-molecule methods. As leading experts in biophysical chemistry, these well-known authors offer unique insights and coverage not available elsewhere. Physical techniques currently used by practicing biochemists, including new chapters dedicated to extended material on mass spectrometry and single-molecule methods are included. The book's streamlined organization groups all hydrodynamic methods in Chapter 5 and combines Raman spectroscopy with the spectroscopy section. Relevant problems and applications help readers develop critical-thinking skills that they can apply to real biochemical and biological situations facing professionals in the industry. Biological Macromolecules; Thermodynamics and Biochemistry; Molecular Thermodynamics; Statistical Thermodynamics; Methods for the Separation and Characterization of Macromolecules; X-Ray Diffraction; Scattering From Solutions of Macromolecules; Quantum Mechanics and Spectros© Absorption Spectros© Linear and Circular Dichroism; Emission Spectros© Nuclear Magnetic Resonance Spectros© Macromolecules in Solution: Thermodynamics and Equilibria; Chemical Equilibria Involving Macromolecules; Mass Spectrometry of Macromolecules; Single-Molecule Methods. A useful reference for biochemistry professionals or for anyone interested in learning more about biochemistry.
Author: Alexandru Grumezescu
Publisher: Academic Press
ISBN: 0128043784
Category : Science
Languages : en
Pages : 926
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Encapsulations, a volume in the Nanotechnology in the Agri-Food Industry series,presents key elements in establishing food quality through the improvement of food flavor and aroma. The major benefits of nanoencapsulation for food ingredients include improvement in bioavailability of flavor and aroma ingredients, improvement in solubility of poor water-soluble ingredients, higher ingredient retention during production process, higher activity levels of encapsulated ingredients, improved shelf life, and controlled release of flavor and aroma. This volume discusses main nanoencapsulation processes such as spray drying, melt injection, extrusion, coacervation, and emulsification. The materials used in nanoencapsulation include lipids, proteins, carbohydrates, cellulose, gums, and food grade polymers. Applications and benefits of nanoencapsulation such as controlled release, protections, and taste masking will be explained in detail. Includes the most up-to-date information on nanoencapsulation and nanocontainer-based delivery of antimicrobials Presents nanomaterials for innovation based on scientific advancements in the field Provides control release strategies to enhance bioactivity, including methods and techniques for research and innovation Provides useful tools to improve the delivery of bioactive molecules and living cells into foods
Author: Uwe Theo Bornscheuer
Publisher: John Wiley & Sons
ISBN: 3527607129
Category : Science
Languages : en
Pages : 368
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Book Description
From reviews to the first edtion: "Bornscheuer and Kazlauskas have set out, and succeeded, in producing a definitive manual on hydrolytic enzymes (especially lipases, esterases, and proteases) for organic chemists. This is quite simply the best book of its type and can be unreservedly recommended to organic chemists who have an interest in using hydrolytic enzymes in synthesis." (Nicholas J. Turner, University of Edinburgh) "The book is an indispensable source of information on the use of hydrolases in organic synthesis. The subject matter is very well set out, and the chapters are clearly written and presented from a critical viewpoint. Bornscheuer and Kazlauskas have succeeded admirably in describing the capabilities and limitations of the use of hydrolytic enzymes and in critically evaluating them. No library should be without the book." (Fritz Theil, WITEGA Angewandte Werkstoff-Forschung GmbH, Berlin) The second edition of this extremely successful and well-proven book presents recent developments in the use of hydrolases for organic synthesis, reflecting in particular the enormous progress made in enzyme discovery and optimization with a new chapter on "Protein Sources and Optimization of Biocatalyst Performance". The renowned authors survey the stereoselective reactions of hydrolases, especially lipases, esterases and proteases, giving researchers an overview of what has worked in the past so that they can judge how to solve their own synthetic problems. In total, the book contains over one thousand chemical structures, rounded off by some 1,800 invaluable references.
Author: Xian Jun Loh
Publisher: Springer
ISBN: 9812871527
Category : Technology & Engineering
Languages : en
Pages : 229
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This book presents the research involving in situ gelling polymers and can be used as a guidebook for academics, industrialists and postgraduates interested in this area. This work summaries the academic contributions from the top authorities in the field and explore the fundamental principles of in situ gelling polymeric networks, along with examples of their major applications. This book aims to provide an up-to-date resource of in situ gelling polymer research.
Author:
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1404
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