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2 edition of Kinetic studies of the reactions of alkoxy radicals in the gas phase found in the catalog.

Kinetic studies of the reactions of alkoxy radicals in the gas phase

Jonathan Olive

Kinetic studies of the reactions of alkoxy radicals in the gas phase

by Jonathan Olive

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Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (Ph.D.) - University of Birmingham, Dept of Chemistry.

Statementby Jonathan Olive.
ID Numbers
Open LibraryOL13889314M

  A substantial data base concerning the rate constants for the gas‐phase reactions of the nitrate (NO3) radical with organic compounds is now available, with rate constants having been determined using both absolute and relative rate methods. To date, the majority of these kinetic date have been obtained at room temperature using relative rate techniques utilizing both the reactions of Cited by: Reactions F. Compilations of Kinetic Data for Atmospheric Reactions. 12/9/ 2 Kinetics and Atmospheric Chemistry • For gas phase reactions, big entropy changes driven by number of compounds involved in reaction – Two reactants two products = S ~ 0File Size: KB.

Article. Kinetic Analysis of the Gas-Phase Reactions of Methacrolein with the OH Radical in the Presence of NO x. André Silva Pimentel*, and Graciela Arbilla. Departamento de Físico-Química, Instituto de Química, Universidade Federal do Rio de Janeiro, Centro de Tecnologia, Bloco A, Sala , Cidade Universitária, Rio de Janeiro - RJ, Brazil. A compilation of kinetics data on gas-phase reactions Notice: We are now accepting requests for abstracting kinetics data from journal articles and other references. Please use the "Submit an Article" link at the left if you find an article that has been missed in the database.

Gas Phase Reactions. The simplest chemical reactions are those that occur in the gas phase in a single step, The figure below divides the plot of the change in the concentrations of NO 2 and ClNO into a kinetic regionand an equilibrium region. By definition, the kinetic region is the period during which the concentrations of the components. On second thought, however, that lone oxygen atom does exist inside some phase, and that is the gas phase. So it would not be entirely inappropriate to assign it the gas state. With some other reactions, it could have been different. There are examples of reactions between gases that really occur on the solid surface of certain catalyst.


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Kinetic studies of the reactions of alkoxy radicals in the gas phase by Jonathan Olive Download PDF EPUB FB2

Gas phase kinetic and theoretical studies of reactions of germylenes and dimethylstannylene Article in Russian Chemical Bulletin 54(3) March with 13 Reads How we measure 'reads'. Download Citation | Radical Chemistry in the Gas Phase | We discuss the role of isolated radicals in various chemical environments, such as combustion engines, low-temperature plasmas, planetary.

The single C−C scission pathway of the other alkoxy radical from β-pinene possesses a very low (∼4 kcal/mol) barrier. The kinetically favored C−C scission reactions of all four alkoxy radicals appear to be far faster than expected rates of reaction with O 2.

The rearrangement of the α-pinene−OH adduct, a key step in the proposed Cited by: A free-radical reaction is any chemical reaction involving free reaction type is abundant in organic pioneering studies into free radical reactions have been the discovery of the triphenylmethyl radical by Moses Gomberg () and the lead-mirror experiment described by Friedrich Paneth in In this last experiment tetramethyllead is decomposed at elevated.

Termination reactions are generally slower than propagation reactions because radicals are present at low concentrations and collisions between radicals are therefore relatively infrequent. In subsequent chapters we will encounter many types of radical-assisted chains following the general schematic (R12).

This book presents recent advances in the field and includes the following topics: the oxidation of simple organic compounds, NOx kinetics and mechanisms, OH radical production and rate constants for the OH attack on more complex organic compounds, peroxy and alkoxy radical reactions, photo-oxidation of aromatic and biogenic compounds, the.

Theoretical investigations have been carried out on the mechanism, kinetics and thermochemistry of the gas-phase reactions between CF 3 CH 2 OCH 2 CF 3 and OH radical using a newly developed DFT based MX functional method. Two important H abstraction channels have been identified according to different orientations of the two H atoms bonded to same carbon atom in CH 2 group, and one Cited by: Absolute rate coefficients for the reactions of CN(ν=1, 0) radicals with O2 (k1) and H2 (k2) were measured from to K in a heatable quartz rea Cited by: Summary.

Laboratory kinetic studies of gas-phase elementary reactions of importance to tropospheric chemistry were initiated as part of the LACTOZ programme at the Swiss Federal Institute of Environmental Science and Technology (EAWAG) in October Author: J.

Alistair Kerr, David W. Stocker, Marco Semadeni, Jürg Eberhard, Claudia Müller. The mechanism for OH and NO3 radical-initiated oxidation reactions of methyl methacrylate (MMA) was investigated by using density functional theory (DFT) molecular orbital theory. Geometrical parameters of the reactants, intermediates, transition states, and products were fully optimized at the B3LYP/G(d,p) level.

Detailed oxidation pathways were presented and by: 9. Goals / Objectives There are two objectives of this project: (1) To continue laboratory studies of the kinetics and products of the gas-phase reactions of selected volatile model organophosphorus compounds, focusing on the investigation of the lifetimes and fates of previously identified first-generation products of general chemical structure (RO)2P(O)OH, ROP(O)(R)OH.

Alkoxy radicals are a key component in both the atmospheric and combustion oxidation pathways of traditional and alternative fuels. An accurate description of their chemistry as it alters with reaction conditions is essential to understanding atmospheric and combustion processes involving hydrocarbons.

Experimental and theoretical data on alkoxy radicals and their reactions are scarce Cited by: radicals. Prior kinetic measurements of gas-phase peroxy radical reactions have typically employed flash-photolysis methods coupled with detection of the radicals only by UV absorption spectroscopy.

However, uncertainties can arise because several different species often contribute to the absorption signal. The IR channel provides an. A major theme in this research has been the role of surface-generated gas-phase radicals in heterogeneous catalysis, with emphasis on methyl radicals formed from methane.

The activation of methane is of particular interest because of its abundance as a hydrocarbon resource. Olariu RI, Bejan I, Barnes I et al () Rate coefficients for the gas-phase reaction of NO 3 radicals with selected dihydroxybenzenes. Int J Chem Kinet – CrossRef Google Scholar Orlando JJ, Tyndall GS () Laboratory studies of organic peroxy radical chemistry: an overview with emphasis on recent issues of atmospheric : Christa Fittschen.

@article{osti_, title = {Studies of elementary gas phase reactions}, author = {Moyle, A.M. Jr.}, abstractNote = {Elementary gas phase reactions of the methoxy radical (CH[sub 3]O) were studied using a flow tube apparatus.

The methoxy radical was produced by the reaction of atomic fluorine, generated in a microwave discharge, with methanol. Rate coefficients for alkyl and alkoxy radical decomposition are important in combustion, biological, and atmospheric processes.

In this paper, rate constant expressions for C 1 C 4 alkyl and alkoxy radicals decomposition via β‐scission are recommended based on the reverse, exothermic reaction, the addition of a hydrogen atom or an alkyl radical to an olefin or carbonyl species with the Cited by: The kinetics of the gas-phase reactions of selected monoterpenes and cyclo-alkenes with ozone and the NO3 radical D.J.

Stewart*, The relative rate method has been used to measure the room-temperature rate constants for the gas-phase reactions of ozone and NO3 with selected monoterpenes and cyclo-alkenes with structural simi. The kinetic molecular theory of gases is a model that helps us understand the physical properties of gases at the molecular level.

It is based on the following concepts: Gases consist of particles (molecules or atoms) that are in constant random motion. Gas particles are constantly colliding with each other and the walls of their : Jessie A. Key, David W. Ball. The third edition of a classic text originally by Frost and Pearson, that describes the fundamental principles and established practices that apply to the study and the rates and mechanisms of homogeneous chemical reactions in the gas phase and in solution.

Incorporates new advances made during the past 20 years in the study of individual molecular collisions by molecular-beam, laser Reviews: 1. Home» ANU Research» ANU Scholarly Output» ANU Research Publications» Alkoxy radicals in the gaseous phase: β-scission reactions and formation by radical addition to carbonyl compounds Alkoxy radicals in the gaseous phase: β-scission reactions and formation by radical addition to carbonyl compounds.

link to publisher version. Statistics;Cited by:   An experimental, temperature-dependent kinetic study of the gas-phase reaction of the hydroxyl radical with molecular bromine (reaction 1) has been performed using a pulsed laser photolysis/pulsed-laser-induced fluorescence technique over a wide temperature range of – K, and at pressures between and kPa of by: 9.Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes R.

Atkinson To cite this version: R. Atkinson. Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes.

Atmo-spheric Chemistry and Physics Discussions, European Geosciences Union,3 (4), pp ￿hal￿.