Pyrolysis of Organic Molecules with Applications to Health and Environmental Issues, the 28th volume in the Techniques and Instrumentation in Analytical Chemistry series, gives a systematic and comprehensive description of pyrolysis of non-polymeric organic molecules. Pyrolysis is involved in many practical applications as well as in many common human activities, but harmful compounds can be generated in the process. The study of pyrolysis and of the formation of undesirable compounds as a result of pyrolytic processes is of considerable interest to chemists, chemical engineers, and toxicologists. Pyrolysis results for compounds not previously studied or reported Updated information from a large body of results published on pyrolysis of individual compounds or classes of compounds Information on mechanisms and kinetics of numerous pyrolytic processes
Pyrolysis of Organic Molecules: Applications to Health and Environmental Issues, Second Edition offers a systematic presentation of pyrolysis results for the main classes of non-polymeric organic molecules. It covers a large body of data published on pyrolysis, as well as numerous original contributions to the pyrolysis of compounds not previously studied. This thoroughly revised edition contains new results reported in the literature since the first edition published, including the generation of traces of toxic compounds in various pyrolytic processes; the pyrolysis in the presence of catalysts and solid supports such as alumina, silica, and non-inert metals; and pyrolysis of specific mixtures of compound such as amino acids plus carbohydrates. This new information regarding the pyrolysis of these mixtures has greatly improved the utility of the book, making Pyrolysis of Organic Molecules an essential resource for chemists and chemical engineers involved in processes related to pyrolysis, as well as toxicologists and environmentalists. Presents new information on the pyrolysis of specific compounds Includes data on the mechanisms and kinetics of pyrolytic processes Provides data on the influence of catalysts and solid supports on pyrolytic processes
Analytical pyrolysis is one of the many tools utilized for the study of natural organic polymers. This books describes in three parts the methodology of analytical pyrolysis, the results of pyrolysis for a variety of biopolymers, and several practical applications of analytical pyrolysis on natural organic polymers and their composite materials. Analytical pyrolysis methodology covers two distinct subjects, the instrumentation used for pyrolysis and the analytical methods that are applied for the analysis of the pyrolysis products. A variety of pyrolytic techniques and of analytical instruments commonly coupled with pyrolysis devices are given. The description of the results of pyrolysis for biopolymers and some chemically modified natural organic polymers is the core of the book. The main pyrolysis products of numerous compounds as well as the proposed mechanisms for their pyrolysis are described. In this part an attempt is made to present as much as possible the chemistry of the pyrolytic process of natural organic polymers. The applications of analytical pyrolysis include topics such as polymer detection used for example in forensic science, structure elucidation of specific polymers, and identification of small molecules present in polymers (anti-oxidants, plasticizers, etc.). Also, the degradation during heating is a subject of major interest in many practical applications regarding the physical properties of polymers. The applications to composite polymeric materials are in the fields of classification of microorganisms, study of a variety of biological samples, study of fossil materials, etc. Analytical pyrolysis can also be used for obtaining information on the burning area generate pyrolysates that have complex compositions. Their analysis is important in connection with health issues, environmental problems, and taste of food and cigarettes. Features of this book: • Presents analytical pyrolysis as a uniform subject and not as a conglomerate of scientific papers. • Puts together in an organized manner a large volume of available information in this specific field. • Provides original results which address subjects with relatively scarce information in literature. • Gives original views on subjects such as the parallel between the pyrolytic process and the ion fragmentation in mass spectrometry. • Includes the role of pyrolysis in the burning process. The three parts of the book are covered in 18 chapters, each divided into sections. Some sections are further divided by particular subjects. References are given for each chapter, and an effort has been made to include as much as possible from the available representative information. A few unpublished personal results are also included.
Offers a physical organic chemistry and mechanistic perspective of the chemistry of thermal processes in the gas phase The book looks at all aspects of the chemical processing technique called gas-phase pyrolysis, including its methodology and reactors, synthesis, reaction mechanisms, structure, kinetics, and applications. It discusses combinations of pyrolytic reactors with physiochemical techniques, routes for and reactions for the synthesis of organic compounds, and the control of reaction rates. Gas-Phase Pyrolytic Reactions: Synthesis, Mechanisms, and Kinetics starts with in-depth chapter coverage of static pyrolysis, dynamic flow pyrolysis, and analytical pyrolysis. It then examines synthesis and applications, including flash vacuum pyrolysis in organic synthesis, elimination of HX, elimination of CO and CO2, pyrolysis of Meldrum’s acid derivatives, and elimination of N2. A chapter on reaction mechanism comes next and includes coverage of retero-ene reaction and reactive intermediates. Following that are sections covering: structure/reactivity correlation, functional group & structural frame interconversions; gas-phase pyrolysis of hydrazones and phosphorus Ylides; and more. Deals with a growing area of chemistry and engineering interest that fits under the practices of green and sustainable chemistry Addresses several important aspects: methodology and reactors, synthesis, reaction mechanisms, structure, kinetics, and applications Reviews general methods of pyrolysis techniques Sets out the fundamentals and advantages of gas-phase pyrolysis in a way that illustrates its wide potential applications Gas-Phase Pyrolytic Reactions: Synthesis, Mechanisms, and Kinetics will appeal to organic chemists, physical organic chemists, chemical engineers and anyone interested in green/sustainable chemistry, chemical synthesis, or process chemistry.
|Author||: Serban C. Moldoveanu|
|Release Date||: 2005-01-20|
|ISBN 10||: 9780080455860|
|Pages||: 714 pages|
Analytical Pyrolysis of Synthetic Organic Polymers is a follow-up to Analytical Pyrolysis of Natural Organic Polymers, which is volume 20 of the series. The main focus of the book is on practical applications of analytical pyrolysis in synthetic organic polymer identification and characterization. The first part of the book has five chapters including an introduction, a discussion on physico-chemistry of thermal degradation of synthetic polymers and on instrumentation used in analytical pyrolysis, a chapter discussing what type of information can be obtained from analytical pyrolysis, and a chapter dedicated to the analysis and characterization of synthetic polymers. The second part systematically covers the analytical pyrolysis of various classes of synthetic polymers. Some theoretical background for the understanding of polymer structure using analytical pyrolysis is also discussed. * Includes broad coverage of organic synthetic macromolecules * Focuses on physico-chemistry of thermal degradation, and the analytical pyrolysis of various classes of synthetic polymers * Is well written and suitable for both researchers and chemists working in analytical chemistry or in synthetic polymers
|Author||: Leo Aloysius Wall|
|Release Date||: 1972|
|Pages||: 192 pages|
Analytical Pyrolysis of Natural Organic Polymers, Second Edition, Volume 20 describes the methodology of analytical pyrolysis, the results of pyrolysis for a variety of biopolymers, and several practical applications of analytical pyrolysis on natural organic polymers and their composite materials. The book describes the results of pyrolysis for biopolymers and some chemically modified natural organic polymers. In addition, the many applications of analytical pyrolysis are covered in detail, including topics such as polymer detection used in forensic science, structure elucidation of specific polymers, and identification of small molecules present in polymers (anti-oxidants, plasticizers, etc.). Assembles all essential information on the pyrolysis of natural polymers in one volume, together with the techniques and instrumentation used Covers advances and developments over the last 20 years, including discussions on the many different types of apparatus commercially available Includes reference lists in every chapter to guide readers on a path to further study
|Author||: Ghulam Ghaus Choudhry,O. Hutzinger|
|Publisher||: CRC Press|
|Release Date||: 1983|
|ISBN 10||: 9780677061306|
|Pages||: 194 pages|
Analytical pyrolysis deals with the structural identification and quantitation of pyrolysis products with the ultimate aim of establishing the identity of the original material and the mechanisms of its thermal decomposition. The pyrolytic process is carried out in a pyrolyzer interfaced with analytical instrumentation such as gas chromatography (GC), mass spectrometry (MS), gas chromatography coupled with mass spectrometry (GC/MS), or with Fourier-transform infrared spectroscopy (GC/FTIR). By measurement and identification of pyrolysis products, the molecular composition of the original sample can often be reconstructed.This book is the outcome of contributions by experts in the field of pyrolysis and includes applications of the analytical pyrolysis-GC/MS to characterize the structure of synthetic organic polymers and lignocellulosic materials as well as cellulosic pulps and isolated lignins, solid wood, waste particle board, and bio-oil. The thermal degradation of cellulose and biomass is examined by scanning electron micrography, FTIR spectroscopy, thermogravimetry (TG), differential thermal analysis, and TG/MS. The calorimetric determination of high heating values of different raw biomass, plastic waste, and biomass/plastic waste mixtures and their by-products resulting from pyrolysis is described.
|Author||: Ishwar D. Aggarwal,Stuart Farquharson,Eric Koglin|
|Publisher||: SPIE-International Society for Optical Engineering|
|Release Date||: 1995|
|Pages||: 244 pages|