Etude cinétique des processus d'oxydation thermique du 1,3-C4Cl6, CH2Cl2 et C6H5Cl PDF Download
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Author: Arezki Fadli
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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L'utilisation extremement importante de composes organiques volatils (cov) comme solvants, intermediaires de synthese, fluides frigorigenes, etc dans nos societes industrialisees est devenue une preoccupation majeure pour la protection de notre environnement. Face a une reglementation de plus en plus contraignante, les industriels se trouvent dans l'obligation de limiter les emissions de cov issues de leurs procedes. La mise en place de techniques de destruction thermique propres c'est-a-dire suffisamment performantes et fiables pour permettre le respect des limites d'emissions des rejets vers l'environnement suppose une meilleure connaissance des processus responsables de la degradation des compose organiques traites et plus particulierement, celle du mecanisme de formation des polluants atmospheriques qui leur sont associes. L'objectif de ce travail est de contribuer a une meilleure connaissance des processus de degradation thermique de quelques molecules modeles appartenant a differentes types d'organochlores tels que le dichloromethane (compose paraffinique), l'hexachlorobutadiene (compose insature) et le monochlorobenzene (compose aromatique). Les processus d'oxydation thermique de ces trois composes ont ete etudies par la methode du reacteur tubulaire ouvert a 1 atm. Entre 600 et 1100c. Les principales especes moleculaires intermediaires et finales ont ete identifiees et analysees en fonction de la temperature et pour des temps de sejour compris entre 0,5 et 3 secondes. Le monoxyde de carbone s'avere etre le compose intermediaire majoritaire forme lors de l'oxydation thermique de ces trois composes. Dans le cas de l'hexachlorobutadiene et du dichloromethane, le phosgene constitue l'intermediaire organique majoritaire alors que l'acetylene joue ce role pour le chlorobenzene.
Author: Arezki Fadli
Publisher:
ISBN:
Category :
Languages : fr
Pages : 0
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Book Description
L'utilisation extremement importante de composes organiques volatils (cov) comme solvants, intermediaires de synthese, fluides frigorigenes, etc dans nos societes industrialisees est devenue une preoccupation majeure pour la protection de notre environnement. Face a une reglementation de plus en plus contraignante, les industriels se trouvent dans l'obligation de limiter les emissions de cov issues de leurs procedes. La mise en place de techniques de destruction thermique propres c'est-a-dire suffisamment performantes et fiables pour permettre le respect des limites d'emissions des rejets vers l'environnement suppose une meilleure connaissance des processus responsables de la degradation des compose organiques traites et plus particulierement, celle du mecanisme de formation des polluants atmospheriques qui leur sont associes. L'objectif de ce travail est de contribuer a une meilleure connaissance des processus de degradation thermique de quelques molecules modeles appartenant a differentes types d'organochlores tels que le dichloromethane (compose paraffinique), l'hexachlorobutadiene (compose insature) et le monochlorobenzene (compose aromatique). Les processus d'oxydation thermique de ces trois composes ont ete etudies par la methode du reacteur tubulaire ouvert a 1 atm. Entre 600 et 1100c. Les principales especes moleculaires intermediaires et finales ont ete identifiees et analysees en fonction de la temperature et pour des temps de sejour compris entre 0,5 et 3 secondes. Le monoxyde de carbone s'avere etre le compose intermediaire majoritaire forme lors de l'oxydation thermique de ces trois composes. Dans le cas de l'hexachlorobutadiene et du dichloromethane, le phosgene constitue l'intermediaire organique majoritaire alors que l'acetylene joue ce role pour le chlorobenzene.
Author: Bertrand Lavédrine
Publisher: Getty Publications
ISBN: 9780892367016
Category : Photograph collections
Languages : en
Pages : 304
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Book Description
A resource for the photographic conservator, conservation scientist, curator, as well as professional collector, this volume synthesizes both the masses of research that has been completed to date and the international standards that have been established on the subject.
Author: Andrew M. Ellis
Publisher: John Wiley & Sons
ISBN: 9781405176682
Category : Science
Languages : en
Pages : 0
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Proton Transfer Reaction Mass Spectrometry (PTR-MS) is a rapidly growing analytical technique for detecting and identifying very small quantities of chemical compounds in air. It has seen widespread use in atmospheric monitoring and food science and shows increasing promise in applications such as industrial process monitoring, medical science and in crime and security scenarios. Written by leading researchers, this is the first book devoted to PTR-MS and it provides a comprehensive account of the basic principles, the experimental technique and various applications, thus making this book essential reading for researchers, technicians, postgraduate students and professionals in industry. The book contains nine chapters and is divided into two parts. The first part describes the underlying principles of the PTR-MS technique, including • the relevant ion-molecule chemistry • thermodynamics and reaction kinetics • a discussion of ion sources, drift tubes and mass spectrometers • practical aspects of PTR-MS, including calibration. The second part of the book turns its attention to some of the many applications of PTR-MS, demonstrating the scope and benefits, as well as the limitations, of the technique. The chapters that make up the second part of the book build upon the material presented in the first part and are essentially self-contained reviews focusing on the following topics: • environmental science • food science • medicine • homeland security, and • applications of PTR-MS in liquid analysis.
Author: Peter Eaton
Publisher: Oxford University Press
ISBN: 0199570450
Category : Science
Languages : en
Pages : 257
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Book Description
Atomic force microscopes are very important tools for the advancement of science and technology. This book provides an introduction to the microscopes so that scientists and engineers can learn both how to use them, and what they can do.
Author: Yiyang Dong
Publisher: John Wiley & Sons
ISBN: 3527341846
Category : Science
Languages : en
Pages : 370
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Book Description
Clear, comprehensive, and state of the art, the groundbreaking book on the emerging technology of direct analysis in real time mass spectrometry Written by a noted expert in the field, Direct Analysis in Real Time Mass Spectrometry offers a review of the background and the most recent developments in DART-MS. Invented in 2005, DART-MS offers a wide range of applications for solving numerous analytical problems in various environments, including food science, forensics, and clinical analysis. The text presents an introduction to the history of the technology and includes information on the theoretical background, for exampleon the ionization mechanism. Chapters on sampling and coupling to different types of mass spectrometers are followed by a comprehensive discussion of a broad range of applications. Unlike most other ionization methods, DART does not require laborious sample preparation, as ionization takes place directly on the sample surface. This makes the technique especially attractive for applications in forensics and food science. Comprehensive in scope, this vital text: -Sets the standard on an important and emerging ionization technique -Thoroughly discusses all the relevant aspects from instrumentation to applications -Helps in solving numerous analytical problems in various applications, for example food science, forensics, environmental and clinical analysis -Covers mechanisms, coupling to mass spectrometers, and includes information on challenges and disadvantages of the technique Academics, analytical chemists, pharmaceutical chemists, clinical chemists, forensic scientists, and others will find this illuminating text a must-have resource for understanding the most recent developments in the field.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 230
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Author: Matheus Poletto
Publisher: BoD – Books on Demand
ISBN: 9535122290
Category : Science
Languages : en
Pages : 286
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Cellulose - Fundamental Aspects and Current Trends consists of 10 chapters written by international subject matter experts investigating the characteristics and current applications of this fascinating material. This book will help the reader to develop a deeper understanding about the concepts related to cellulose and the nanocellulose structure, modification, production, dissolution, and application. Biosynthesis mechanisms and medical applications of microbial cellulose are also discussed. This book will serve as the starting point for materials science researchers, engineers, and technologists from diverse backgrounds in physics, chemistry, biology, materials science, and engineering who want to know and better understand the unique characteristics of the most abundant biopolymer on earth.
Author: Jürgen U. Keller
Publisher: Springer Science & Business Media
ISBN: 0387235981
Category : Science
Languages : en
Pages : 430
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This book is intended to present for the first time experimental methods to measure equilibria states of pure and mixed gases being adsorbed on the surface of solid materials. It has been written for engineers and scientists from industry and academia who are interested in adsorption based gas separation processes and/or in using gas adsorption for characterization of the porosity of solid materials. This book is the result of a fruitful collaboration of a theoretician (JUK) and an experimentalist (RS) over more than twelve years in the field of gas adsorption systems at the Institute of Fluid- and Thermodynamics (IFT) at the University of Siegen, Siegen, Germany. This collaboration resulted in the development of several new methods to measure not only pure gas adsorption, but gas mixture or coadsorption equilibria on inert porous solids. Also several new theoretical results could be achieved leading to new types of so-called adsorption isotherms based on the concepts of molecular association and – phenomenologically speaking – on that of thermodynamic phases of fractal dimension. Naturally, results of international collaboration of the authors over the years (1980-2000) also are included.
Author: Ravindra Kumar Gautam
Publisher: CRC Press
ISBN: 1315351129
Category : Science
Languages : en
Pages : 438
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Contamination of aqueous environments by hazardous chemical compounds is the direct cause of the decline of safe clean water supply throughout the globe. The use of unconventional water sources such as treated wastewater will be a new norm. Emerging nanotechnological innovations have great potential for wastewater remediation processes. Applications that use smart nanomaterials of inorganic and organic origin improve treatment efficiency and lower energy requirements. This book describes the synthesis, fabrication, and application of advanced nanomaterials in water treatment processes; their adsorption, transformation into low toxic forms, or degradation phenomena, and the adsorption and separation of hazardous dyes, organic pollutants, heavy metals and metalloids from aqueous solutions. It explains the use of different categories of nanomaterials for various pollutants and enhances understanding of nanotechnology-based water remediation to make it less toxic and reusable.
Author: Arthur L. Kohl
Publisher: Butterworth-Heinemann
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 918
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