Author: Didier Bernache-Assollant
Publisher:
ISBN:
Category :
Languages : fr
Pages : 150
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Book Description
Les phénomènes d'adsorption interviennent de façon déterminante dans de nombreuses réactions hétérogènes comme les réactions de décomposition ou les réactions électrochimiques aux électrodes. Leur étude systématique aux plans expérimental et théorique est donc à ce titre amplement justifiée, par surcroît, certains solides ont, grâce à leurs propriétés spécifiques d'adsorption, des champs d'application divers (notamment en pétrochimie) : Ce sont en particulier les corps zéolithiques utilisés comme catalyseurs, supports de catalyseurs, ou tamis moléculaires. Il n'est donc pas étonnant que les résultats expérimentaux soient nombreux en ce domaine, cependant l'étude de leur comportement en présence de mélanges gazeux pose des difficultés expérimentales réelles ce qui a nettement limité le nombre des résultats obtenus à ce jour, les recherches théoriques ont souvent donné lieu à l'extension de modèles déjà appliqués avec succès à d'autres solides mais rarement l'aspect spécifique de la structure zéolithique (cavités régulières) a été prise en compte. Le but de ce travail est donc double : D'une part, l’élaboration d'un modèle thermodynamique adapté au cas particulier de l’adsorption de gaz purs ou de leur mélange sur une zéolithe, d'autre part, la mise au point d'une méthode expérimentale permettant l'étude des équilibres d'adsorption d'un mélange gazeux sur un solide. La première partie de ce mémoire comprendra une brève mise à jour bibliographique en particulier la description des différentes théories interprétant les isothermes d'adsorption d'un gaz pur et de mélange gazeux sur un solide. La deuxième partie sera consacrée à la description d'une nouvelle méthode thermodynamique, générale par son formalisme, permettant l’étude quantitative de l’équilibre entre la phase adsorbée et la phase gazeuse. Les deux cas extrêmes, adsorption localisée ou délocalisée dans les cavités, seront étudiés ainsi que les lois correspondantes de répartitions des cavités en fonction de leur taux de remplissage. L'extension au cas d'un mélange gazeux sera effectuée à la fin de cette partie. Dans la troisième partie, nous décrirons l'appareillage utilisé et la mise au point expérimentale de l'étude de l'adsorption d'un mélange gazeux sur un solide. Les deux derniers chapitres de cette partie seront consacrés aux résultats expérimentaux et aux interprétations théoriques portant sur les systèmes : Dioxyde de carbone ou éthane sur les zéolithes 4 A et 13X ainsi que le mélange gazeux éthane-dioxyde de carbone sur la zéolithe 4 A.
Author: Helene Paquet
Publisher: Springer Science & Business Media
ISBN: 3642605257
Category : Science
Languages : en
Pages : 523
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Book Description
Clays and soils are of great importance in various scientific fields, such as agriculture and environmental science, and in mineral deposits. Students and close collaborators of Georges Millot, the eminent French clay sedimentologist, have put together a book with topics ranging from weathering processes and diagenetic evalution of sediments to sedimentary mineral deposits. The book is of interest to practitioners, advanced students as well as teachers in the above fields.
Author: Don Montague
Publisher: Taylor & Francis
ISBN: 9780419199106
Category : Architecture
Languages : en
Pages : 472
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Book Description
This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.
Author: C. Bréchignac
Publisher: Springer Science & Business Media
ISBN: 3540729933
Category : Science
Languages : en
Pages : 753
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Book Description
Here is a brilliant book that covers the major aspects of nanomaterials production. It integrates the many and varied chemical, material and thermo-dynamical facets of production, offering readers a new and unique approach to the subject. The mechanical, optical, and magnetic characteristics of nanomaterials are also presented in detail. Nanomaterials are a fast developing field of research and this book serves as both a reference work for researchers and a textbook for graduate students.
Author: H. R. Sasse
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 792
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Book Description
Preface Adhesion is a phenomenon architects and civil engineers are not very familiar with. In other disciplines knowledge about surface properties and the background of bonding energies is also far from satisfactory; nevertheless there are many important· applications in concrete engineering, where adhesion is necessary for success and durability. These include: - coating and painting - repair of concrete surfaces - bonding of fresh to old concrete - crack injection - glueing of precast elements - glueing of steel to concrete, etc. In 1981 RILEM established the technical committee 52-RAC 'Resin Adherence to Concrete'. The main aims of the committee's work were - to collect research results and practical experiences - to initiate and coordinate research programs - to develop, on a scientific base, test methods for field and for laboratory purposes. One of the results of the committee's work is a state-of-the-art report, which will be presented orally as a General Report at the International Symposium ISAP '86, and will be printed either in the RILEM journal Materials and Structures or separately. Several test recommendations have been elaborated and will be prepared as drafts for the participants ofISAP '86. These are: - direct tensile test - pull-off test - direct shear test - slant shear test - four-point bending test - dynamic loading test - thermal compatibility test (two versions) - injectibility test.
Author: M. R. Riazi
Publisher: ASTM International
ISBN: 9780803133617
Category : Technology & Engineering
Languages : en
Pages : 425
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Book Description
The last three chapters of this book deal with application of methods presented in previous chapters to estimate various thermodynamic, physical, and transport properties of petroleum fractions. In this chapter, various methods for prediction of physical and thermodynamic properties of pure hydrocarbons and their mixtures, petroleum fractions, crude oils, natural gases, and reservoir fluids are presented. As it was discussed in Chapters 5 and 6, properties of gases may be estimated more accurately than properties of liquids. Theoretical methods of Chapters 5 and 6 for estimation of thermophysical properties generally can be applied to both liquids and gases; however, more accurate properties can be predicted through empirical correlations particularly developed for liquids. When these correlations are developed with some theoretical basis, they are more accurate and have wider range of applications. In this chapter some of these semitheoretical correlations are presented. Methods presented in Chapters 5 and 6 can be used to estimate properties such as density, enthalpy, heat capacity, heat of vaporization, and vapor pressure. Characterization methods of Chapters 2-4 are used to determine the input parameters needed for various predictive methods. One important part of this chapter is prediction of vapor pressure that is needed for vapor-liquid equilibrium calculations of Chapter 9.
Author: Janusz Kacprzyk
Publisher: Springer Nature
ISBN: 3030906396
Category : Technology & Engineering
Languages : en
Pages : 1298
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Book Description
This book publishes the best papers accepted and presented at the 3rd edition of the International Conference on Advanced Intelligent Systems for Sustainable Development Applied to Agriculture, Energy, Health, Environment, Industry, Education, Economy, and Security (AI2SD’2020). This conference is one of the biggest amalgamations of eminent researchers, students, and delegates from both academia and industry where the collaborators have an interactive access to emerging technology and approaches globally. In this book, readers find the latest ideas addressing technological issues relevant to all areas of the social and human sciences for sustainable development. Due to the nature of the conference with its focus on innovative ideas and developments, the book provides the ideal scientific and brings together very high-quality chapters written by eminent researchers from different disciplines, to discover the most recent developments in scientific research.
Author: Dietrich H. Welte
Publisher: Springer Science & Business Media
ISBN: 3642604234
Category : Science
Languages : en
Pages : 555
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Book Description
This book has been prepared by the collaborative effort of two somewhat separate technical groups: the researchers at the Institute for Petroleum and Organic Geochemistry, Forschungszentrum Jii lich (KFA), and the technical staff of Integrated Exploration Systems (IES). One of us, Donald R. Baker, from Rice University, Houston, has spent so much time at KFA as a guest scientist and researcher that it is most appropriate for him to contribute to the book. During its more than 20-year history the KFA group has made numerous and significant contributions to the understanding of petroleum evolution. The KFA researchers have emphasized both the field and laboratory approaches to such important problems as source rock recognition and evaluation, oil and gas generation, maturation of organic matter, expulsion and migration of hydrocarbons, and crude oil composition and alteration. IES Jiilich has been a leader in the development and application of numerical simulation (basin modeling) procedures. The cooperation between the two groups has resulted in a very fruitful synergy effect both in the development of modeling software and in its application. The purpose of the present volume developed out of the 1994 publication by the American Association of Petroleum Geologists of a collection of individually authored papers entitled The Petroleum System - From Source to Trap, edited by L. B. Magoon and W. G. Dow.
Author: Mostafa Ezziyyani
Publisher: Springer
ISBN: 3030118819
Category : Technology & Engineering
Languages : en
Pages : 301
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Book Description
This book gathers papers presented at the International Conference on Advanced Intelligent Systems for Sustainable Development (AI2SD-2018), which was held in Tangiers, Morocco on 12–14 July 2018. It highlights how advanced intelligent systems have successfully been used to develop tools and techniques for modeling, prediction and decision support in connection with the environment. Though chiefly intended for researchers and practitioners in advanced intelligent systems for sustainable development, the book will also be of interest to those working in environment and the Internet of Things, environment and big data analysis, summarization, prediction, remote sensing & geo-information, geophysics, marine and coastal environments, and sensor networks for environment services.
Author: Silvia Diez-Gonzalez
Publisher: Royal Society of Chemistry
ISBN: 1782626816
Category : Science
Languages : en
Pages : 637
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Book Description
In less than 20 years N-heterocyclic carbenes (NHCs) have become well-established ancillary ligands for the preparation of transition metal-based catalysts. This is mainly due to the fact that NHCs tend to bind strongly to metal centres, avoiding the need of excess ligand in catalytic reactions. Also, NHC‒metal complexes are often insensitive to air and moisture, and have proven remarkably resistant to oxidation. This book showcases the wide variety of applications of NHCs in different chemistry fields beyond being simple phosphine mimics. This second edition has been updated throughout, and now includes a new chapter on NHC‒main group element complexes. It covers the synthesis of NHC ligands and their corresponding metal complexes, as well as their bonding and stereoelectronic properties and applications in catalysis. This is complemented by related topics such as organocatalysis and biologically active complexes. Written for organic and inorganic chemists, this book is ideal for postgraduates, researchers and industrialists.
