Author: Yue Zeng
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659157943
Category :
Languages : en
Pages : 112
Book Description
Alkoxy radicals are key intermediates of the degradation of Volatile Organic Compounds (VOCs). Of the three major reaction pathways, reaction of alkoxy radicals with molecular oxygen is more consistently important than unimolecular decomposition and isomerization. The kinetics of alkoxy radicals reacting with oxygen has been well studied for small alkoxy radicals derived from alkanes; however, there was no data for larger alkoxy radicals derived from more complicated organic compounds, such as aromatic hydrocarbons. In this study, benzyloxy (C6H5CH2O ) has been investigated in order to understand the effect of the aromatic ring on the kinetics of alkoxy radicals reaction with oxygen. The ratio of reactions benzyloxy with oxygen and versus nitrogen dioxide has been investigated by relative rate constant method with product determination by GC-FID. Then rate constants of these two reactions have been estimated and input in kinetic model by Kintecus software. Model and experiment results have been compared and suggestions for improvement have been addressed."
Kinetic Studies of Reaction of Benzyloxy Radical with Oxygen
Author: Yue Zeng
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659157943
Category :
Languages : en
Pages : 112
Book Description
Alkoxy radicals are key intermediates of the degradation of Volatile Organic Compounds (VOCs). Of the three major reaction pathways, reaction of alkoxy radicals with molecular oxygen is more consistently important than unimolecular decomposition and isomerization. The kinetics of alkoxy radicals reacting with oxygen has been well studied for small alkoxy radicals derived from alkanes; however, there was no data for larger alkoxy radicals derived from more complicated organic compounds, such as aromatic hydrocarbons. In this study, benzyloxy (C6H5CH2O ) has been investigated in order to understand the effect of the aromatic ring on the kinetics of alkoxy radicals reaction with oxygen. The ratio of reactions benzyloxy with oxygen and versus nitrogen dioxide has been investigated by relative rate constant method with product determination by GC-FID. Then rate constants of these two reactions have been estimated and input in kinetic model by Kintecus software. Model and experiment results have been compared and suggestions for improvement have been addressed."
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659157943
Category :
Languages : en
Pages : 112
Book Description
Alkoxy radicals are key intermediates of the degradation of Volatile Organic Compounds (VOCs). Of the three major reaction pathways, reaction of alkoxy radicals with molecular oxygen is more consistently important than unimolecular decomposition and isomerization. The kinetics of alkoxy radicals reacting with oxygen has been well studied for small alkoxy radicals derived from alkanes; however, there was no data for larger alkoxy radicals derived from more complicated organic compounds, such as aromatic hydrocarbons. In this study, benzyloxy (C6H5CH2O ) has been investigated in order to understand the effect of the aromatic ring on the kinetics of alkoxy radicals reaction with oxygen. The ratio of reactions benzyloxy with oxygen and versus nitrogen dioxide has been investigated by relative rate constant method with product determination by GC-FID. Then rate constants of these two reactions have been estimated and input in kinetic model by Kintecus software. Model and experiment results have been compared and suggestions for improvement have been addressed."
Kinetic Studies of Reaction of Benzyloxy Radical with Oxygen be Relative Rate Constant Method
Kinetic Studies on Free Radical Reactions Involving Chiral Radicals
Author: Le Zeng
Publisher:
ISBN:
Category : Free radicals (Chemistry)
Languages : en
Pages : 260
Book Description
Publisher:
ISBN:
Category : Free radicals (Chemistry)
Languages : en
Pages : 260
Book Description
Kinetic Studies of Free Radical Reactions with Reference to Atmospheric Chemistry
Kinetic Studies of Reactions Involving Hydroxyl Radicals in Aqueous Solution
Kinetic Studies of Free Radical Reactions
Author: Hamish Cattanach Low
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 354
Book Description
Chemical Processes in Atmospheric Oxidation
Author: Georges Le Bras
Publisher: Springer Science & Business Media
ISBN: 3642592163
Category : Science
Languages : en
Pages : 316
Book Description
Oxidation and removal of atmospheric constituents involve complex sequences of reactions which can lead to the production of photo-oxidants such as ozone. In order to understand and model these complex reaction sequences, it is necessary to have a comprehensive understanding of reaction mechanisms and accurate estimates of kinetic parameters for relevant gas-phase atmospheric reactions. This book presents recent advances in the field and includes the following topics: e.g. 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, and the interaction between radical species.
Publisher: Springer Science & Business Media
ISBN: 3642592163
Category : Science
Languages : en
Pages : 316
Book Description
Oxidation and removal of atmospheric constituents involve complex sequences of reactions which can lead to the production of photo-oxidants such as ozone. In order to understand and model these complex reaction sequences, it is necessary to have a comprehensive understanding of reaction mechanisms and accurate estimates of kinetic parameters for relevant gas-phase atmospheric reactions. This book presents recent advances in the field and includes the following topics: e.g. 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, and the interaction between radical species.
Kinetics and Mechanisms of the Reactions of Alkyl Radicals with Oxygen and with Complexes of Co(III), Ru(III), and Ni(III).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 167
Book Description
The kinetics of the reactions of C2H5 radical with Co(NH3)5X{sup 2+}, Ru(NH3)5X{sup 2+}, and Co(dmgH)2 (X) (Y) (X = Br, Cl, N3, SCN; Y = H2O, CH3CN) complexes were studied using laser flash photolysis of ethylcobalt complexes. The kinetics were obtained by the kinetic probe method. Some relative rate constants were also determined by a competition method based on ethyl halide product ratios. The kinetics of colligation reactions of a series of alkyl radicals with [beta]-Ni(cyclam){sup 2+} were studied using flaser flash photolysis of alkylcobalt complexes. Again, the kinetics were obtained by employing the kinetic probe competition method. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H2O{sup 2+} were studied. Activation parameters were obtained for the unimolecular homolysis of C2H5Ni(cyclam)H2O{sup 2+}. Kinetic and thermodynamic data obtained from these reactions were compared with those for the [sigma]-bonded organometallic complexes. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H2O{sup 2+} complexes were studied by monitoring the formation of the oxygen insertion product RO2Ni(cyclam)H2O{sup 2+}. The higher rate constants for the reactions of alkyl radicals with oxygen in solution, as compared with those measured in the gas phase, were discussed. 30 refs.
Publisher:
ISBN:
Category :
Languages : en
Pages : 167
Book Description
The kinetics of the reactions of C2H5 radical with Co(NH3)5X{sup 2+}, Ru(NH3)5X{sup 2+}, and Co(dmgH)2 (X) (Y) (X = Br, Cl, N3, SCN; Y = H2O, CH3CN) complexes were studied using laser flash photolysis of ethylcobalt complexes. The kinetics were obtained by the kinetic probe method. Some relative rate constants were also determined by a competition method based on ethyl halide product ratios. The kinetics of colligation reactions of a series of alkyl radicals with [beta]-Ni(cyclam){sup 2+} were studied using flaser flash photolysis of alkylcobalt complexes. Again, the kinetics were obtained by employing the kinetic probe competition method. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H2O{sup 2+} were studied. Activation parameters were obtained for the unimolecular homolysis of C2H5Ni(cyclam)H2O{sup 2+}. Kinetic and thermodynamic data obtained from these reactions were compared with those for the [sigma]-bonded organometallic complexes. The kinetics of the unimolecular homolysis of a series of RNi(cyclam)H2O{sup 2+} complexes were studied by monitoring the formation of the oxygen insertion product RO2Ni(cyclam)H2O{sup 2+}. The higher rate constants for the reactions of alkyl radicals with oxygen in solution, as compared with those measured in the gas phase, were discussed. 30 refs.