Thermal Decomposition of Solids and Melts: New Thermochemical Approach to the Mechanism, Kinetics and Methodology by Boris V. L'vovThermal Decomposition of Solids and Melts: New Thermochemical Approach to the Mechanism, Kinetics and Methodology by Boris V. L'vov

Thermal Decomposition of Solids and Melts: New Thermochemical Approach to the Mechanism, Kinetics…

byBoris V. L'vovOtherMichael E. Brown

Paperback | November 30, 2010

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This book covers the results of investigations into the mechanisms and kinetics of thermal decompositions of solid and liquid substances on the basis of thermochemical analyses of the processes. In the framework of the proposed ideas, the main features of these reactions are explained and many problems and unusual phenomena, which have accumulated in this field are interpreted. New methods of TA measurement and calculation have been developed, which permit the precision and accuracy of determination of kinetic parameters to be increased substantially. Reliable kinetic characteristics have been obtained and the decomposition mechanisms for several tens of substances have been interpreted. These include different classes of compounds: crystalline hydrates, oxides, hydroxides, nitrides, azides, nitrates, sulfates, carbonates and oxalates.FOREWORDIt has been an interesting task helping Professor Boris L'vov with the production of an English version of his book. Although we have, unfortunately, never met in person, we have had many contacts by e-mail. He kindly presented me with a copy of the Russian edition of his book soon after publication and I was immediately frustrated by not being able to read it. Professor L'vov's work is both original and controversial and spread over an impressive number of primary publications. This literature had been condensed by the chief author into a book of manageable size, but still needed to be made accessible to the English-speaking world. One of my motives in offering to assist with the English edition was to "force" myself to pay close attention to his complex ideas and suggestions. I think that I have come out of the process with a greater appreciation of some aspects, but still have to undergo a full "conversion experience"! Time just did not allow lengthy exchanges between us and these will, perhaps, have to be postponed for future debates in the literature. My hope is that this translation will bring Professor L'vov's work to the attention of a wider audience and that this will promote constructive discussion of the assumptions made.Grahamstown, February 2007 Michael E. Brown
Professor and Head of the Analytical Chemistry department at St. Petersburg State University, Russia.
Title:Thermal Decomposition of Solids and Melts: New Thermochemical Approach to the Mechanism, Kinetics…Format:PaperbackDimensions:265 pages, 9.25 × 6.1 × 0 inPublished:November 30, 2010Publisher:Springer NetherlandsLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:904817421X

ISBN - 13:9789048174218

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Table of Contents

Preface.-Abbreviations.-Introduction.-Part I. Thermal Decomposition: Primary Concepts: Mechanism: Congruent Dissociative Vaporization.- Direct Observation of Primary Products of Decomposition by Mass Spectrometric Methods.- Induction, Acceleration and Process Localization.- Nucleus Shape and Position.-Peculiarities of Structure and Composition of Solid Product.-Thermal Stability of Complex Gaseous Molecules.- Kinetics: The Arrhenius Equation.- The Hertz-Langmuir Equation and Langmuir Diffusion Equations.- Modification of the Hertz-Langmuir Equation as Applied to Decomposition Reactions.- Equilibrium Pressure of Products in the Equimolar and Isobaric Modes.- Equations for Calculation of the Absolute Rates of Decomposition.- Interpretation of the Arrhenius Parameters by the Use of the Langmuir Evaporation Equations.- Methodology: The Arrhenius-plots Method.- The Second-law Method.-The Third-law Method.- Approximate Evaluation of the Molar Enthalpies.- Reproducibility of Measurements.- Accuracy.- Measurement Time.- Part II. Interpretation and Quantitative Analysis of the Effects, Phenomena and Regularities Accompanying the Decomposition: Decomposition Conditions and the Molar Enthalpy: Ratio of Initial Decomposition Temperature to the Molar Enthalpy.- Thermal Desorption and Criteria for its Identification.- Impact of the Decomposition Mode and Reaction Stoichiometry on the Molar Enthalpy.- Decomposition of Carbonates in the Presence of CO2.- Decomposition of Crystalline Hydrates in the Presence of H2O.- The Self-cooling Effect: The Model of Temperature Calculation.- The Temperature Distribution in Powder Reactants.- Corrections to the Kinetic Parameters.- Experimental Evaluation of Self-cooling.- The Topley-Smith Effect: Experimental Observations.- Modeling of the Topley-Smith Effect for Li2SO4 . H2O.- Modeling of the Topley-Smith Effect for CaCO3.- Impact of Vapour Condensation on the Enthalpy Change: The Contribution of the Condensation Energy to the Enthalpy Change.- Increase of the Enthalpy Change with Temperature.- Reactant Melting and the Decomposition Enthalpy.- Thermochemical Analysis of the Composition of the Primary Decomposition Products.- Effect of the Crystalline Structure of a Substance on the Composition of the Primary Decomposition Products: Oxides.- Nitrides.- Phosphorous, Arsenic and Antimony.- Evaporation Coefficients.- The Kinetic Compensation Effect.- Conclusions.- Part III. Thermal Decomposition of Individual Substances: Instruments for Thermogravimetric Measurements.- Measurement Conditions and Procedures for Thermogravimetric Studies: Evaluation of the Absolute Rate of Decomposition.- Choice of the Decomposition Temperature.- Choice of the Residual Pressure of Air in the Reactor (equimolar mode).- Decomposition in the Presence of the Gaseous Product (isobaric mode).- Decomposition of Hydrates in Air and Carbonates in Argon and Air.- Evaporation and Decomposition of Some Substances: Non-metals (phosphorus).- Metalloids (arsenic, antimony).- Oxides.- Higher Oxides for IV Group of Metals.- Sulfides, Selenides and Tellurides.- Nitrides.- Azides.- Hydroxides.- Clays.- Hydrates.- Nitrates.- Sulfates.- Carbonates.- Oxalates.- Final conclusions.- Appendices: Fundamental Physical Constants.- Atomic Masses of Elements.- Coefficients of Mutual Diffusion of Gases.- Spectral and Integrated Emittance of Some Metals and Oxides.- Composition of Dry Atmospheric Air.- Saturation Pressure of Water Vapour.- Subject Index.

Editorial Reviews

Aus den Rezensionen:"Das Buch ist eine Übersetzung aus dem Russischen mit Zusätzen und Verbesserungen. . Es beschäftigt sich mit der thermischen Zersetzung von Festkörpern und Schmelzen. . Ulgolkov beschreibt die instrumentellen Parameter thermodynamisch und erläutert sie an Beispielen. Das Buch schließt mit einem Index, Massekonstanten und Gasdruckdaten. Das Fachbuch wendet sich an Anwender der Thermischen Analysetechniken. Die thermodynamischen Effekte werden gut beschrieben ." (Robert Fuchs, in: Mitteilungsblatt der GDCh -Gesellschaft Deutscher Chemiker-, 2008, Issue 4, S. 12)