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Richard A. Cox

Bio: Richard A. Cox is an academic researcher from Polaris Industries. The author has contributed to research in topics: Reaction rate constant & Radical. The author has an hindex of 24, co-authored 33 publications receiving 8387 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, the authors present a compilation of critically evaluated kinetic data on elementary homogeneous gas phase chemical reactions for use in modelling combustion processes Data sheets are presented for some 196 reactions each data sheet sets out relevant thermodynamic data, rate coefficient measurements, an assessment of the reliability of the data, references and recommended rate parameters Tables summarizing the preferred rate data are also given
Abstract: This compilation contains critically evaluated kinetic data on elementary homogeneous gas phase chemical reactions for use in modelling combustion processes Data sheets are presented for some 196 reactions Each data sheet sets out relevant thermodynamic data, rate coefficient measurements, an assessment of the reliability of the data, references, and recommended rate parameters Tables summarizing the preferred rate data are also given The reactions considered are limited largely to those involved in the combustion of methane and ethane in air but a few reactions relevant to the chemistry of exhaust gases and to the combustion of aromatic compounds are also included

1,986 citations

Journal ArticleDOI
TL;DR: A critical evaluation of the kinetics and photochemistry of gas phase chemical reactions of neutral species involved in middle atmosphere chemistry (10-55 km altitude) was carried out by the authors under the auspices of the CODATA Task Group on Chemical Kinetics.
Abstract: This paper contains a critical evaluation of the kinetics and photochemistry of gas phase chemical reactions of neutral species involved in middle atmosphere chemistry (10–55 km altitude). The work has been carried out by the authors under the auspices of the CODATA Task Group on Chemical Kinetics. Data sheets have been prepared for 148 thermal and photochemical reactions, containing summaries of the available experimental data with notes giving details of the experimental procedures. For each reaction a preferred value of the rate coefficient at 298 K is given together with a temperature dependency where possible. The selection of the preferred value is discussed, and estimates of the accuracies of the rate coefficients and temperature coefficients have been made for each reaction. The data sheets are intended to provide the basic physical chemical data needed as input for calculations which model atmospheric chemistry. A table summarizing the preferred rate data is provided, together with an Appendix listing the available data on enthalpies of formation of the reactant and product species.

1,661 citations

01 Jan 1995
TL;DR: In this article, a compilation of kinetic data on elementary, homogeneous, gas phase reactions of neutral species involved in combustion systems has been presented under the auspices of the European Community Energy Research and Development Program.
Abstract: This compilation updates and expands a previous evaluation of kinetic data on elementary, homogeneous, gas phase reactions of neutral species involved in combustion systems [J. Phys. Chem. Ref. Data 21, 411 (1992)]. The work has been carried out under the auspices of the European Community Energy Research and Development Program. Data sheets are presented for some 78 reactions and two tables in which preferred rate parameters are presented for reactions of ethyl, i‐propyl, t‐butyl, and allyl radicals are given. Each data sheet sets our relevant thermodynamic data, experimental kinetic data, references, and recommended rate parameters with their error limits. A table summarizing the recommended rate data is also given. The new reactions fall into two categories: first, to expand the previous compilation relating largely to the combustion in air of methane, ethane and aromatic compounds; and second, provide data for some of the key radicals involved in the combustion of higher alkanes.

1,463 citations

Journal ArticleDOI
TL;DR: In this paper, the authors present a summary table of reactions containing the recommended rate coefficients along with the assigned error limits, and refer the reader to the full article to obtain the data sheets for each reaction which contain the available experimental data upon which the recommendations are based.
Abstract: Here we present the summary Table of reactions containing the recommended rate coefficients along with the assigned error limits. The reader is referred to the full article to obtain the data sheets for each reaction which contain the available experimental data upon which the recommendations are based

631 citations

Journal ArticleDOI
TL;DR: A review of the state of the art in peroxy radical detection can be found in this article, where a number of experimental techniques have been used for the generation and detection of peroxy radicals and products of their reactions.

628 citations


Cited by
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Journal ArticleDOI
TL;DR: The present status of knowledge of the gas phase reactions of inorganic Ox, Hox and NOx species and of selected classes of volatile organic compounds (VOCs) and their degradation products in the troposphere is discussed in this paper.

2,722 citations

Journal ArticleDOI
TL;DR: In this article, it is proposed that the hydroxyl radical, OH·, is the primary oxidant in the photocatalytic system and four possible mechanisms are suggested, all based on OH· attack of the organic reactant.

1,929 citations

Journal ArticleDOI
TL;DR: In this article, a detailed chemical kinetic mechanism has been developed and used to study the oxidation of n-heptane in flow reactors, shock tubes, and rapid compression machines, where the initial pressure ranged from 1-42 atm, the temperature from 550-1700 K, the equivalence ratio from 0.3-1.5, and nitrogen-argon dilution from 70-99%.

1,835 citations

Journal ArticleDOI
TL;DR: A model for the photochemistry of the global troposphere constrained by observed concentrations of H2O, O3, CO, CH4, NO, NO2, and HNO3 is presented in this paper.
Abstract: A model for the photochemistry of the global troposphere constrained by observed concentrations of H2O, O3, CO, CH4, NO, NO2, and HNO3 is presented. Data for NO and NO2 are insufficient to define the global distribution of these gases but are nonetheless useful in limiting several of the more uncertain parameters of the model. Concentrations of OH, HO2, H2O2, NO, NO2, NO3, N2O5, HNO2, HO2NO2, CH3O2, CH3OOH, CH2O, and CH3CCl3 are calculated as functions of altitude, latitude, and season. Results imply that the source for nitrogen oxides in the remote troposphere is geographically dispersed and surprisingly small, less than 107 tons N yr−1. Global sources for CO and CH4 are 1.5 × 109 tons C yr−1 and 4.5 × 108 tons C yr−1, respectively. Carbon monoxide is derived from combustion of fossil fuel (15%) and oxidation of atmospheric CH4 (25%), with the balance from burning of vegetation and oxidation of biospheric hydrocarbons. Production of CO in the northern hemisphere exceeds that in the southern hemisphere by about a factor of 2. Industrial and agricultural activities provide approximately half the global source of CO. Oxidation of CO and CH4 provides sources of tropospheric O3 similar in magnitude to loss by in situ photochemistry. Observations of CH3CCl3 could offer an important check of the tropospheric model and results shown here suggest that computed concentrations of OH should be reliable within a factor of 2. A more definitive test requires better definition of release rates for CH3CCl3 and improved measurements for its distribution in the atmosphere.

1,762 citations