scholarly journals Concerted HO2 Elimination from α-Aminoalkylperoxyl Free Radicals: Experimental and Theoretical Evidence from the Gas-Phase NH2•CHCO2– + O2 Reaction

2012 ◽  
Vol 3 (7) ◽  
pp. 805-811 ◽  
Author(s):  
Gabriel da Silva ◽  
Benjamin B. Kirk ◽  
Celli Lloyd ◽  
Adam J. Trevitt ◽  
Stephen J. Blanksby
Keyword(s):  
Free Radicals ◽  
Gas Phase ◽  
Theoretical Evidence

μSr studies of free radicals in the gas phase

1995 ◽  
Vol 190 (2) ◽  
pp. 493-503 ◽  
Author(s):  
M. Senba ◽  
D. J. Arseneau ◽  
J. J. Pan ◽  
M. Shelley ◽  
D. G. Fleming
Keyword(s):  
Free Radicals ◽  
Gas Phase

Photochemical oxidation of atmospheric sulphur dioxide

1979 ◽  
Vol 290 (1376) ◽  
pp. 543-550 ◽  
Keyword(s):  
Free Radicals ◽  
Gas Phase ◽  
Sulphur Dioxide ◽  
Heterogeneous Reactions ◽  
Photochemical Oxidation ◽  
Gas Phase Reactions ◽  
Oxidation Rates ◽  
Polluted Atmosphere ◽  
Gas Phase Oxidation ◽  
Background Troposphere

Oxidation of atmospheric sulphur dioxide can occur by homogeneous photochemically initiated gas-phase reactions as well as by heterogeneous reactions in cloud and fog droplets. Gas phase oxidation can result from reactions of excited SO 2 molecules formed by absorption of solar u.v. radiation by ground state SO 2 , from reactions of SO 2 with photochemically generated OH and RO 2 free radicals, and from its reaction with transient species produced in thermal ozone—alkene reactions. Evaluation of the available mechanistic and rate data reveals that, of these three processes, oxidation by free radicals, particularly OH, is likely to be the most important in the atmosphere. Oxidation rates of up to 4 % h -1 are predicted for a hydrocarbon-NO x polluted atmosphere under western European summertime conditions. This can lead to the formation of elevated concentrations of sulphuric acid and sulphate aerosol in polluted air. In the natural background troposphere oxidation rates are much less, ca . 0.3 % h -1 averaged over 24 h, but probably still significant as a source of atmospheric sulphates.

Experimental and theoretical evidence for the generation of a stable hydrazine dication in the gas phase

1987 ◽  
Vol 77 (2-3) ◽  
pp. R3-R6 ◽  
Author(s):  
Thomas Drewello ◽  
Carlito B. Lebrilla ◽  
Helmut Schwarz ◽  
Daniel Stahl
Keyword(s):  
Gas Phase ◽  
Theoretical Evidence
Sign in / Sign up

Export Citation Format

Share Document