Analysis Of Low Pressure Gas Phase Pyrolytic Reactions By Mass Spectrometric Techniques

The present report highlights applications of mass spectrometric techniques in the analysis of low-pressure pyrolytic reactions, based on work carried out at the Chemistry Department, Ris0 National Laboratory. The Ris0 contributions ot this field of research started in 1979. The studies at Ris0 have all been carried out in close collaboration with Helge Egsgaard. Other collaborators have been Ernst Schaumann (Hamburg), David N. Harpp (Montreal), Gordon H. Whitham (Oxford), Susanne Elbel (Hamburge), and Elfinn Larsen, Palle Pagsberg, and Peter Bo (Ris0). The major part of the work summarized in the present report has previously been published in the below mentioned 18 papers. Reprints of these papers are included in this report as appendices 1-18. For a more detailed description of the technique, and especially the applications the appendices 1-7 and 8-18, respectively, should be consulted. (MJM).

The present report highlights applications of mass spectrometric techniques in the analysis of low-pressure pyrolytic reactions, based on work carried out at the Chemistry Department, Ris0 National Laboratory. The Ris0 contributions ot this field of research started in 1979. The studies at Ris0 have all been carried out in close collaboration with Helge Egsgaard. Other collaborators have been Ernst Schaumann (Hamburg), David N. Harpp (Montreal), Gordon H. Whitham (Oxford), Susanne Elbel (Hamburge), and Elfinn Larsen, Palle Pagsberg, and Peter Bo (Ris0). The major part of the work summarized in the present report has previously been published in the below mentioned 18 papers. Reprints of these papers are included in this report as appendices 1-18. For a more detailed description of the technique, and especially the applications the appendices 1-7 and 8-18, respectively, should be consulted. (MJM).

Analytical Pyrolysis: Techniques and Applications provides an overview of analytical pyrolysis applied to geochemistry, biology, polymers, and biomass. This book presents a survey of basic phenomena, data analysis, and instrumentation. Organized into 15 chapters, this book begins with an overview of mass spectrometry in developing ion sources that are applicable to materials that either have low volatility, high molecular weight, are thermally unstable or some combination of the three. This text then examines the role of thermal processes in many of the desorption methods. Other chapters consider desorption techniques, which are closely allied to analytical pyrolysis. This book discusses as well the Flash Vacuum Pyrolysis/Field Ionization Mass Spectrometry (FVP/FIMS) technique, which is based on a direct link between the pyrolysis unit and a double focusing mass spectrometer. The final chapter deals with inert atmosphere poly (vinyl chloride) (PVC) thermal decomposition. This book is a valuable resource for chemists and researchers.

Analytical Pyrolysis presents the Proceedings of the Third International Symposium on Analytical Pyrolysis, held in Amsterdam on September 7-9, 1976. It looks at newly emergent techniques in analytical pyrolysis, including pyrolysis mass spectrometry, gas chromatography, thin-layer chromatography, and pyrolysis-gas liquid chromatography. The book also covers topics ranging from automation and microbiology to forensic science and pharmacology, reproducibility and specificity, biochemistry, laser-induced pyrolysis, pyrolytic reaction mechanisms, and polymers. Comprised of 50 chapters, this book begins with a discussion of automatic analysis of tire rubber blends using computer-linked pyrolysis gas chromatography, thermal procedures in coupling with thin-layer chromatography, the role of pyrolysis-gas liquid chromatography in biomedical studies, and the identification of microorganisms by pyrolysis gas-liquid chromatography. It then examines forensic applications of analytical pyrolysis techniques, structure and degradation behavior of synthetic polymers using pyrolysis in combination with field ion mass spectrometry, determination of polysaccharides in fulvic acids by pyrolysis gas chromatography, and application of Curie-point pyrolysis mass spectrometry in fungal taxonomy. The reader is also introduced to pyrolysis mass spectrometry of model compounds labeled with stable isotopes, the use of pyrolysis/gas chromatography to determine the quality of porous polymers of styrene cross-linked with divinyl benzene, and application of pyrohydrolysis for a rapid and accurate determination of halides in silicate rocks and minerals. This volume will benefit students, researchers, chemists, and scientists working in the field of analytical pyrolysis.

Mathematical Modelling of Gas-Phase Complex Reaction Systems: Pyrolysis and Combustion, Volume 45, gives an overview of the different steps involved in the development and application of detailed kinetic mechanisms, mainly relating to pyrolysis and combustion processes. The book is divided into two parts that cover the chemistry and kinetic models and then the numerical and statistical methods. It offers a comprehensive coverage of the theory and tools needed, along with the steps necessary for practical and industrial applications. Details thermochemical properties and "ab initio" calculations of elementary reaction rates Details kinetic mechanisms of pyrolysis and combustion processes Explains experimental data for improving reaction models and for kinetic mechanisms assessment Describes surrogate fuels and molecular reconstruction of hydrocarbon liquid mixtures Describes pollutant formation in combustion systems Solves and validates the kinetic mechanisms using numerical and statistical methods Outlines optimal design of industrial burners and optimization and dynamic control of pyrolysis furnaces Outlines large eddy simulation of turbulent reacting flows