Thermodynamic Properties of Hydrocarbon Radicals, Peroxy Hydrocarbon and Peroxy Chlorohydrocarbon Molecules and Radicals PDF Download
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Author: Tsan-Horng Lay
Publisher:
ISBN:
Category : Benzene
Languages : en
Pages : 604
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Book Description
Author: Tsan-Horng Lay
Publisher:
ISBN:
Category : Benzene
Languages : en
Pages : 604
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 876
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Book Description
Author: Milan Lazar
Publisher: CRC Press
ISBN: 9780849353871
Category : Science
Languages : en
Pages : 322
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Book Description
Elementary radical reactions are described in terms of fundamental knowledge of organic chemistry and chemical physics in this valuable reference text. The complex radical processes of nonchain and chain mechanisms, such as dimerization, alkylation, polymerization, telomerization, halogenation pyrolysis, oxidation and combustion, are complemented by reactions in chemical lasers and in the cosmos, as well as by reactions in biological objects under normal or pathological metabolism. The text also provides the synthesis of facts from various fields of research and involves mechanisms where free radicals appear either as main or side intermediates in one of the several alternatives of the reaction pathway. Highlights include 38 tables and 39 figures.
Author: William Pryor
Publisher: Elsevier
ISBN: 032315221X
Category : Science
Languages : en
Pages : 400
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Book Description
Frontiers of Free Radical Chemistry covers the proceedings of the 1979 symposium on Frontiers of Free Radical Chemistry, held in Louisiana State University Chemistry Department, supported by the Exxon Education Foundation. The contributors discuss the mechanisms of hydrocarbon cracking; oxidation processes; inhibition; and the theory of organic radical reactions, halogenations, and organic peroxide chemistry. This book is organized into three parts encompassing 15 chapters. Part I deals with the understanding of molecular and free radical mechanisms in predicting thermochemical data for radicals and molecules. This part also describes the relationship between distortions of organic molecules and the reactions of pericyclic, ionic, and radical molecules. Part II presents quantitative evaluations of gas phase reactions or carbynes and hydrocarbon pyrolysis and cracking. Discussions on the reactions of free atoms and radicals in the chemistry of the stratosphere and natural troposphere, with an emphasis on the ozone layer and its potential depletion by artificial pollutants, are included in this part. Part III explores the pertinent free radical reactions related to fuel research. Petroleum chemists, researchers, and engineers will find this book invaluable.
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 800
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 29
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Book Description
Addition of hydroperoxy-alkyl radicals to molecular oxygen leads to chain branching in autoignition and engine knock, and in low temperature oxidation of paraffins. Rate constants and product channels for reaction of hydroperoxy-propyl radicals with O2 are estimated using thermodynamic properties, bimolecular quantum Kassel analysis and transition state theory. Thermochemistry of relevant molecules and radicals is estimated using group additivity and bond dissociation groups for radicals. Results show that rates of the hydroperoxy-propyl radical addition to O2 are near their high pressure limits at ≥ 1 atm. Main products at 1--15 atm are stabilization, reverse reaction to hydroperoxy-propyl + O2 and alkyl carbonyl + OH. Reactions of the stabilized adducts, dissociation rates and product channels are estimated using unimolecular quantum Kassel analysis, because stabilization is the most important hydroperoxy-propyl radical + O2 product channel. Below 700 K, the stabilized peroxy adducts react primarily to hydroperoxy-carbonyl + OH, products which lead to chain branching. Above 700K, the stabilized peroxy adducts react primarily to hydroperoxy-propyl radical + O2, initial reactants, which inhibits the overall oxidation. This switchover in channels correlates well observed negative temperature coefficient behavior for propane oxidation. Rate expressions for reaction of each of the three hydroperoxy-alkyl isomers with O2 and for dissociation of the associated stabilized adducts are calculated for a series of pressures at 300--2100K.
Author: Jared Matthew Clark
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
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Book Description
Original work regarding the formation of a series of organic RO2-H2O complexes is presented. This work established the effects of different functional groups on the stability of organic peroxy radicals and makes estimates of the associated atmospheric lifetimes and equilibrium constants. This work is further extended to the family of peroxy radicals that form from the atmospheric oxidation of isoprene (the most abundant non-methane biologically emitted hydrocarbon). For the first time, complexes of isoprene peroxy radicals with water are presented along with atmospheric lifetime estimates. Conclusions are made as to the effect of water on the product branching ratio of the isoprene peroxy radical + NO2. The oxidation of hexanal to form hexanal peroxy radicals is discussed within the context of the formation of hexanal peroxy water complexes.
Author: J. A. Howard
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
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Book Description
The four propagation and three termination rate constants for the co-oxidation of cumene and Tetralin were determined at 30C and 56C. The secondary tetralylperoxy radical is about four times as reactive in hydrogen atom abstraction as the tertiary cumylperoxy radical. The rate constant for termination by reaction of a tetralylperoxy and a cumylperoxy radical has about one quarter of the value for termination by two tetralylperoxy radicals. Rate constants for the transfer of hydroperoxidic hydrogen to peroxy radicals were measured. This reaction exhibits an exceptionally large deuterium isotope effect. A possible explanation for the high value is suggested. The absolute rate constants at 30C. for hydrogen atom abstraction from toluene, ethylbenzene, cumene, and Tetralin by cumylperoxy, tetralylperoxy, and 9,10-dihydroanthracyl-9-peroxy radicals were measured. (Author).
Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 908
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Book Description
Author: Donald T. Sawyer
Publisher: Springer Science & Business Media
ISBN: 1489923209
Category : Science
Languages : en
Pages : 310
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Book Description
This monograph consists of manuscripts submitted by invited speakers who participated in the symposium "Industrial Environmental Chemistry: Waste Minimization in Industrial Processes and Remediation of Hazardous Waste," held March 24-26, 1992, at Texas A&M University. This meeting was the tenth annual international symposium sponsored by the Texas A&M Industry-University Cooperative Chemistry Program (IUCCP). The program was developed by an academic-industrial steering committee consisting of the co-chairmen, Professors Donald T. Sawyer and Arthur E. Martell of the Texas A&M University Chemistry Department, and members appointed by the sponsoring companies: Bernie A. Allen, Jr., Dow Chemical USA; Kirk W. Brown, Texas A&M University; Abraham Clearfield, Texas A&M University; Greg Leyes, Monsanto Company; Jay Warner, Hoechst-Celanese Corporation; Paul M. Zakriski, BF Goodrich Company; and Emile A. Schweikert, Texas A&M University (IUCCP Coordinator). The subject of this conference reflects the interest that has developed in academic institutions and industry for technological solutions to environmental contamination by industrial wastes. Progress is most likely with strategies that minimize waste production from industrial processes. Clearly the key to the protection and preservation of the environment will be through R&D that optimizes chemical processes to minimize or eliminate waste streams. Eleven of the papers are directed to waste minimization. An additional ten papers discuss chemical and biological remediation strategies for hazardous wastes that contaminate soils, sludges, and water.
