Download or read book ETUDE DE CATALYSEURS PD SN AL 2O 3 PREPARES PAR VOIE COLLOIDALE OXYDE written by STEPHAN.. VERDIER and published by . This book was released on 2001 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA VOIE COLLOIDALE OXYDE, DEVELOPPEE AU LABORATOIRE POUR LES CATALYSEURS MONOMETALLIQUES, CONSISTE A PREPARER UN SOL D'OXYDE METALLIQUE EN SOLUTION AQUEUSE QUI, APRES DEPOT SUR SUPPORT ET UNE ETAPE D'ACTIVATION, CONDUIT AU CATALYSEUR METALLIQUE SUPPORTE. DANS CETTE THESE, CETTE METHODE EST ADAPTEE A LA PREPARATION DE CATALYSEURS BIMETALLIQUES PD-SN SUPPORTES SUR ALUMINE POUR ESTIMER SON INTERET POUR LE CONTROLE DES PROPRIETES DE LA PHASE BIMETALLIQUE (TAILLE, COMPOSITION ET STRUCTURE). LORS DE L'ETUDE PRELIMINAIRE DES SOLS D'OXYDE D'ETAIN, DES NANOPARTICULES DE SNO 2 DE 2,3 NM ET DE SN 6O 4(OH) 4 DE 25 NM ONT ETE SYNTHETISEES PAR NEUTRALISATION RESPECTIVEMENT POUR L'ETAIN(IV) ET L'ETAIN(II). LE CONTROLE PAR LE PH DE L'AGREGATION DES PARTICULES D'OXYDE STANNIQUE ET D'OXYDE DE PALLADIUM A MONTRE QUE LA SOLUBILITE CROISSANTE DE L'OXYDE FAVORISE LA DESAGREGATION INTEGRALE DES PARTICULES. POUR SYNTHETISER DES SOLS BIMETALLIQUES OXYDES, TROIS STRATEGIES ONT ETE DEFINIES. LA COPOLYMERISATION (FORMATION D'UN NANOSOL D'OXYDE MIXTE PAR CONDENSATION CROISEE DES DEUX METAUX) NE CONDUIT PAS A LA SYNTHESE D'UNE PHASE OXYDE MIXTE PD-SN. LA PRECIPITATION DE SURFACE (NEUTRALISATION DU SECOND METAL EN PRESENCE DU SOL D'OXYDE DU PREMIER) PERMET D'OBTENIR DES NANOPARTICULES DES DEUX OXYDES EN INTERACTION INTIME. L'ADSORPTION (ADSORPTION DU SECOND METAL SUR LE SOL D'OXYDE DU PREMIER) A LIEU DE MANIERE SIGNIFICATIVE LORS DE L'ADSORPTION D'ETAIN SUR UN SOL BASIQUE D'OXYDE DE PALLADIUM (ADSORPTION HYDROLYTIQUE). LA CARACTERISATION ET L'EVALUATION DES PROPRIETES CATALYTIQUES (HYDROGENATION SELECTIVE DU BUTA-1,3-DIENE) DES CATALYSEURS PREPARES PAR DEPOT DES SOLS BIMETALLIQUES MONTRENT QUE LA VOIE COLLOIDALE OXYDE PERMET DE CONTROLER LES PROPRIETES DE LA PHASE BIMETALLIQUE. NOS RESULTATS PERMETTENT PAR AILLEURS D'AFFIRMER QUE LA FORMATION D'ALLIAGE PD-SN ET L'AGREGATION DES PARTICULES METALLIQUES CONTRIBUENT A AUGMENTER LA SELECTIVITE DE LA REACTION.
Download or read book Exchange Reactions written by and published by . This book was released on 1965 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Industrial Chemistry written by Fabrizio Cavani and published by John Wiley & Sons. This book was released on 2009-09-22 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years the need for sustainable process design and alternative reaction routes to reduce industry?s impact on the environment has gained vital importance. The book begins with a general overview of new trends in designing industrial chemical processes which are environmentally friendly and economically feasible. Specific examples written by experts from industry cover the possibilities of running industrial chemical processes in a sustainable manner and provide an up-to-date insight into the main concerns, e.g., the use of renewable raw materials, the use of alternative energy sources in chemical processes, the design of intrinsically safe processes, microreactor and integrated reaction/ separation technologies, process intensification, waste reduction, new catalytic routes and/or solvent and process optimization.
Download or read book Modelling in Aquatic Chemistry written by OECD Nuclear Energy Agency and published by Nuclear Energy Agency. This book was released on 1997 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Terra 2008 written by Leslie Rainer and published by Getty Publications. This book was released on 2011-06-14 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
Download or read book Multifunctional Oxide Based Materials From Synthesis to Application written by Teofil Jesionowski and published by MDPI. This book was released on 2019-09-03 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with novel aspects and perspectives in metal oxide and hybrid material fabrication. The contributions are mainly focused on the search for a new group of advanced materials with designed physicochemical properties, especially an expanded porous structure and defined surface activity. The proposed technological procedures result in an enhanced activity of the synthesized hybrid materials, which is of great importance when considering their potential fields of application. The use of such materials in different technological disciplines, including aspects associated with environmental protection, allows for the verification of the proposed synthesis method. Thus, it can be stated that those aspects are of interdisciplinary character and may be located at the interface of three scientific disciplines—chemistry, materials science, and engineering—as well as environmental protection. Furthermore, the presented scientific scope is in some way an answer to the continuous demand for such types of materials and opens new perspectives for their practical use
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Download or read book Chemical Thermodynamics of Neptunium and Plutonium written by Robert J. Lemire and published by Elsevier. This book was released on 2001-08-26 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unlike earlier books in this series, this review describes the selection of chemical thermodynamic data for species of two elements, neptunium and plutonium. Although this came about more by circumstance than design, it has allowed for a more consistent approach to chemical interpretation than might have occurred in two separate treatments. It has also drawn attention to cases where the available data do not show expected parallels, and where further work may be useful to confirm or refute apparent differences in the behaviour of neptunium and plutonium.
Download or read book Arsenic in Drinking Water written by National Research Council and published by National Academies Press. This book was released on 2001-11-26 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Having safe drinking water is important to all Americans. The Environmental Protection Agency's decision in the summer of 2001 to delay implementing a new, more stringent standard for the maximum allowable level for arsenic in drinking water generated a great deal of criticism and controversy. Ultimately at issue were newer data on arsenic beyond those that had been examined in a 1999 National Research Council report. EPA asked the National Research Council for an evaluation of the new data available. The committee's analyses and conclusions are presented in Arsenic in Drinking Water: 2001 Update. New epidemiological studies are critically evaluated, as are new experimental data that provide information on how and at what level arsenic in drinking water can lead to cancer. The report's findings are consistent with those of the 1999 report that found high risks of cancer at the previous federal standard of 50 parts per billion. In fact, the new report concludes that men and women who consume water containing 3 parts per billion of arsenic daily have about a 1 in 1,000 increased risk of developing bladder or lung cancer during their lifetime.
Download or read book Management of Radioactive Wastes from the Nuclear Fuel Cycle written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.
Download or read book Flexoelectricity in Liquid Crystals written by Agnes Buka and published by World Scientific. This book was released on 2013 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book intends to give a state-of-the-art overview of flexoelectricity, a linear physical coupling between mechanical (orientational) deformations and electric polarization, which is specific to systems with orientational order, such as liquid crystals. Chapters written by experts in the field shed light on theoretical as well as experimental aspects of research carried out since the discovery of flexoelectricity. Besides a common macroscopic (continuum) description the microscopic theory of flexoelectricity is also addressed. Electro-optic effects due to or modified by flexoelectricity as well as various (direct and indirect) measurement methods are discussed. Special emphasis is given to the role of flexoelectricity in pattern-forming instabilities. While the main focus of the book lies in flexoelectricity in nematic liquid crystals, peculiarities of other mesophases (bent-core systems, cholesterics, and smectics) are also reviewed. Flexoelectricity has relevance to biological (living) systems and can also offer possibilities for technical applications. The basics of these two interdisciplinary fields are also summarized.
Download or read book Biomolecular Catalysis written by Seong H. Kim and published by . This book was released on 2008 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides up-to-date reviews of nanomaterials synthesis, characterization, and applications in biomolecular catalysis. It contains useful references for researchers in this field and will be a practical guide for future researchers.
Download or read book Chemical Thermodynamics of Americium written by R.J. Silva and published by Newnes. This book was released on 2012-12-02 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume in a series of critical reviews of the chemical thermodynamic data of those elements of particular importance in the safety assessment modeling of high-level radioactive waste storage and disposal facilities. The objective of these reviews is to provide a set of reliable thermodynamic data that can be used to describe the behaviour of these elements under conditions relevant for radioactive waste disposal systems and the geochemical environments. The present volume is a review of experimental data reported in the literature for americium. On a few occasions, where no data existed, comparisons and estimates were made based on experimental data on analog lanthanide elements. The basic philosophy was to develop a minimum set of solid phases and solution species of americium that would fit all experimental data being reviewed.
Download or read book Materials Syntheses written by Ulrich Schubert and published by Springer Science & Business Media. This book was released on 2008-11-23 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials syntheses are more complex than syntheses of inorganic or organic compounds. Materials synthesis protocols often suffer from unclarities, irreproducibility, lack in detail and lack in standards. The need to change this situation is the main motivation for this book. It collects a number of detailed protocols, ranging from organic polymers to carbonaceous and ceramic materials, from gels to porous and layered materials and from powders and nanoparticles to films.
Download or read book Solid State Polymerization written by Constantine D. Papaspyrides and published by John Wiley & Sons. This book was released on 2009-04-27 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most current guide to solid state polymerization Solid State Polymerization (SSP)is an indispensable tool in the design, manufacture, and study of polymers, plastics, and fibers. SSP presents significant advantages over other polymerization techniques due to low operating temperatures, inexpensive equipment, and simple and environmentally sound procedures. Combining fundamentals of polymer science, chemistry, physical chemistry, and engineering, SSP also offers many research applications for a wide range of students and investigators. Gathering and filtering the latest literature on SSP, Solid Solid State Polymerization offers a unique, one-stop resource on this important process. With chapters contributed by leaders in the field, this text summarizes SSP, and provides essential coverage that includes: An introduction to SSP, with chemical and physical steps, apparatus, advantages, and parameters SSP physical chemistry and mechanisms Kinetic aspects of polyesters and polyamides SSP Catalysis in SSP processes Application of SSP under high pressure conditions in the laboratory Engineering aspects regarding process modeling and industrial application Recent developments and future possibilities Solid State Polymerization provides the most up-to-date coverage of this constantly developing field to academic and industry professionals, as well as graduate and postgraduate-level students in chemical engineering, materials science and engineering, polymer chemistry, polymer processing and polymer engineering.
Download or read book Principles of Physical Biochemistry written by Kensal Edward Van Holde and published by Prentice Hall. This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
