Kinetics of hydrogen abstraction by amino radicals from alkanes in the gas phase. A flash photolysis-laser resonance absorption study

1980 ◽  
Vol 102 (9) ◽  
pp. 2897-2902 ◽  
Author(s):  
M. Demissy ◽  
R. Lesclaux
Keyword(s):  
Gas Phase ◽  
Flash Photolysis ◽  
Hydrogen Abstraction ◽  
Resonance Absorption ◽  
Absorption Study ◽  
Laser Resonance ◽  
Photolysis Laser ◽  
Kinetics Of

Rates of OH Radical Reactions. I. Reactions with H2, CH4, C2H6, and C3H8 at 295 K

1975 ◽  
Vol 53 (22) ◽  
pp. 3374-3382 ◽  
Author(s):  
R. P. Overend ◽  
G. Paraskevopoulos ◽  
R. J. Cvetanović
Keyword(s):  
Gas Phase ◽  
Rate Constants ◽  
Flash Photolysis ◽  
Hydrogen Abstraction ◽  
Resonance Absorption ◽  
Oh Radicals ◽  
Oh Radical ◽  
Absolute Rate ◽  
Absorption Spectrophotometry ◽  
Secondary Reactions

A fast flash photolysis kinetic spectrophotometer capable of measuring rates of up to 105 s−1 is described. The rates of hydrogen abstraction from H2, CH4, C2H6, and C3H8 by OH radicals at 295 ± 2 K, have been measured in the gas phase by hydroxyl resonance absorption spectrophotometry. The influence of secondary reactions on the measured rates and the derivation of the absolute rate constants is discussed in detail.The absolute rate constants in units of cm3 mol−1 s−1 were found to be: [Formula: see text][Formula: see text][Formula: see text] and [Formula: see text]

A flash photolysis investigation of the UV absorption spectrum and self-reaction kinetics of CH2ClCH2O2 radicals in the gas phase

1988 ◽  
Vol 146 (6) ◽  
pp. 589-595 ◽  
Author(s):  
Philippe Dagaut ◽  
Timothy J. Wallington ◽  
Michael J. Kurylo
Keyword(s):  
Absorption Spectrum ◽  
Reaction Kinetics ◽  
Gas Phase ◽  
Flash Photolysis ◽  
Uv Absorption ◽  
Kinetics Of ◽  
Uv Absorption Spectrum

The question of a pressure effect in the reaction OH + HNO3. A laser flash-photolysis resonance-absorption study

1985 ◽  
Vol 117 (2) ◽  
pp. 132-137 ◽  
Author(s):  
Gurvinder S. Jolly ◽  
George Paraskevopoulos ◽  
Donald L. Singleton
Keyword(s):  
Flash Photolysis ◽  
Laser Flash Photolysis ◽  
Pressure Effect ◽  
Laser Flash ◽  
Resonance Absorption ◽  
Absorption Study

ChemInform Abstract: FLASH PHOTOLYSIS OF ACETONE IN GAS PHASE, KINETICS OF ETHANE FORMATION FROM METHYL RADICALS

1975 ◽  
Vol 6 (13) ◽  
Author(s):  
MARJA-LIISA POHJONEN ◽  
LEILA LEINONEN ◽  
HELGE LEMMETYINEN ◽  
JOUKO KOSKIKALLIO
Keyword(s):  
Gas Phase ◽  
Flash Photolysis ◽  
Methyl Radicals ◽  
Gas Phase Kinetics ◽  
Ethane Formation ◽  
Kinetics Of

ChemInform Abstract: Kinetics of Reactions Between Methyl and Acetyl Radicals in Gas Phase Produced by Flash Photolysis of Acetic Anhydride.

ChemInform ◽  
1990 ◽  
Vol 21 (41) ◽  
Author(s):  
E. HASSINEN ◽  
K. KALLIORINNE ◽  
J. KOSKIKALLIO
Keyword(s):  
Acetic Anhydride ◽  
Gas Phase ◽  
Flash Photolysis ◽  
Kinetics Of

The Rate-Constant of the Reaction of Hydroxyl Radicals With Methanol, Ethanol and (D3)Methanol

1986 ◽  
Vol 39 (11) ◽  
pp. 1775 ◽  
Author(s):  
PG Greenhill ◽  
BV Ogrady
Keyword(s):  
Hydroxyl Radicals ◽  
Rate Constant ◽  
Flash Photolysis ◽  
Hydrogen Abstraction ◽  
Reaction Scheme ◽  
Resonance Absorption ◽  
Rate Coefficients ◽  
Secondary Reactions ◽  
Temperature Ranges ◽  
Predominant Process

The rate coefficients for hydrogen abstraction by hydroxyl radicals from methanol and ethanol have been determined in the temperature ranges 260-803 K and 255-459 K respectively. Flash photolysis combined with resonance absorption detection of OH was used to obtain results which may be described by the Arrhenius expressions:   Methanol ��� k(T) = (8.0�1.9)×10-12 exp[-(664�88)K/T]cm3 s-1 ������� (1)   Ethanol ���� k(T) = (1.25�0.24)×10-11 exp[-(360�52)K/T]cm3 s-1 (2)  The results obtained for methanol are in excellent agreement with results obtained by other workers, but the Arrhenius parameters for ethanol are markedly different to those obtained in the only other study of the temperature dependence of this reaction. The rate constant for reaction with (D3)methanolhas been determined at 293 K: (D3)Methanol ����� k(293) = 5.0�0.2×10-13 cm3 s-1 (3) The presence of an isotope effect confirms that the predominant process is abstraction of hydrogen from the carbon rather than the oxygen. The results obtained for the reaction with ethanol were analysed by using a 21 reaction scheme to determine the effect of [OH]O and secondary reactions on k(T). The simulations indicate that secondary reactions involving OH are relatively unimportant in determining the bimolecular rate coefficients found in this study.

scholarly journals Kinetics of the gas phase reaction of the Criegee intermediate CH2OO with SO2 as a function of temperature

2021 ◽  
Vol 23 (35) ◽  
pp. 19415-19423
Author(s):  
Lavinia Onel ◽  
Rachel Lade ◽  
Jennifer Mortiboy ◽  
Mark A. Blitz ◽  
Paul W. Seakins ◽  
...  
Keyword(s):  
Gas Phase ◽  
Absorption Spectroscopy ◽  
Flash Photolysis ◽  
Uv Absorption ◽  
Phase Reaction ◽  
Time Resolved ◽  
Gas Phase Reaction ◽  
Uv Absorption Spectroscopy ◽  
Kinetics Of

The kinetics of the gas phase reaction of the Criegee intermediate CH2OO with SO2 have been studied as a function of temperature in the range 223–344 K at 85 Torr using flash photolysis of CH2I2/O2/SO2/N2 mixtures at 248 nm coupled to time-resolved broadband UV absorption spectroscopy.

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