scholarly journals Gas-phase degradation of 2-butanethiol initiated by OH radicals and Cl atoms: kinetics, product yields and mechanism at 298 K and atmospheric pressure

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22618-22626
Author(s):  
Alejandro L. Cardona ◽  
Rodrigo G. Gibilisco ◽  
María B. Blanco ◽  
Peter Wiesen ◽  
Mariano Teruel
Keyword(s):  
Gas Phase ◽  
Atmospheric Pressure ◽  
Relative Rate ◽  
Product Distribution ◽  
Rate Coefficients ◽  
Oh Radicals ◽  
Product Yields ◽  
Cl Atoms ◽  
Relative Rate Coefficients

Relative rate coefficients and product distribution of the reaction of 2-butanethiol (2butSH) with OH radicals and Cl atoms were obtained at atmospheric pressure and 298 K.

scholarly journals Direct and relative rate coefficients for the gas-phase reaction of OH radicals with 2-methyltetrahydrofuran at room temperature

2016 ◽  
Vol 119 (1) ◽  
pp. 5-18
Author(s):  
Ádám Illés ◽  
Mária Farkas ◽  
Gábor László Zügner ◽  
Gyula Novodárszki ◽  
Magdolna Mihályi ◽  
...  
Keyword(s):  
Gas Phase ◽  
Room Temperature ◽  
Relative Rate ◽  
Rate Coefficients ◽  
Oh Radicals ◽  
Phase Reaction ◽  
Gas Phase Reaction ◽  
Relative Rate Coefficients

scholarly journals Atmospheric sink of methyl chlorodifluoroacetate and ethyl chlorodifluoroacetate: temperature dependent rate coefficients, product distribution of their reactions with Cl atoms and CF2ClC(O)OH formation

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 51834-51844
Author(s):  
María B. Blanco ◽  
Ian Barnes ◽  
Peter Wiesen ◽  
Mariano A. Teruel
Keyword(s):  
Relative Rate ◽  
Product Distribution ◽  
Rate Coefficients ◽  
Gas Phase Reactions ◽  
Temperature Dependent ◽  
Dependent Rate ◽  
P Rate ◽  
Distribution Studies ◽  
First Time ◽  
Cl Atoms

Rate coefficients as a function of temperature and product distribution studies have been performed for the first time for the gas-phase reactions of chlorine atoms with methyl chlorodifluoracetate (k1) and ethyl chlorodifluoroacetate (k2) using the relative rate technique.

Gas-phase reactivity study of a series of hydrofluoroolefins (HFOs) toward OH radicals and Cl atoms at atmospheric pressure and 298 K

2014 ◽  
Vol 88 ◽  
pp. 107-114 ◽  
Author(s):  
Carmen M. Tovar ◽  
María B. Blanco ◽  
Ian Barnes ◽  
Peter Wiesen ◽  
Mariano A. Teruel
Keyword(s):  
Gas Phase ◽  
Atmospheric Pressure ◽  
Oh Radicals ◽  
Reactivity Study ◽  
Cl Atoms

An absolute- and relative-rate study of the gas-phase reaction of OH radicals and Cl atoms with n-alkyl nitrates

1991 ◽  
Vol 178 (2-3) ◽  
pp. 163-170 ◽  
Author(s):  
Ole J. Nielsen ◽  
Howard W. Sidebottom ◽  
Michael Donlon ◽  
Jack Treacy
Keyword(s):  
Gas Phase ◽  
Relative Rate ◽  
Oh Radicals ◽  
Phase Reaction ◽  
Alkyl Nitrates ◽  
Gas Phase Reaction ◽  
Rate Study ◽  
Cl Atoms

Gas-phase reactivity study of (E)-3-pentenenitrile and 4-pentenenitrile towards OH radicals and Cl atoms at atmospheric pressure

2012 ◽  
Vol 61 ◽  
pp. 597-604 ◽  
Author(s):  
Juan P. Colomer ◽  
María B. Blanco ◽  
Alicia B. Peñéñory ◽  
Ian Barnes ◽  
Peter Wiesen ◽  
...  
Keyword(s):  
Gas Phase ◽  
Atmospheric Pressure ◽  
Oh Radicals ◽  
Reactivity Study ◽  
Cl Atoms

scholarly journals Atmospheric degradation of 3-methylfuran: kinetic and products study

2011 ◽  
Vol 11 (7) ◽  
pp. 3227-3241 ◽  
Author(s):  
A. Tapia ◽  
F. Villanueva ◽  
M. S. Salgado ◽  
B. Cabañas ◽  
E. Martínez ◽  
...  
Keyword(s):  
Gas Phase ◽  
Aromatic Ring ◽  
Atmospheric Pressure ◽  
Ring Opening ◽  
Room Temperature ◽  
Rate Coefficients ◽  
Main Reaction ◽  
Phase Reaction ◽  
Reaction Products ◽  
Cl Atoms

Abstract. A study of the kinetics and products obtained from the reactions of 3-methylfuran with the main atmospheric oxidants has been performed. The rate coefficients for the gas-phase reaction of 3-methylfuran with OH and NO3 radicals have been determined at room temperature and atmospheric pressure (air and N2 as bath gases), using a relative method with different experimental techniques. The rate coefficients obtained for these reactions were (in units cm3 molecule−1 s−1) kOH = (1.13 ± 0.22) × 10−10 and kNO3 = (1.26 ± 0.18) × 10−11. Products from the reaction of 3-methylfuran with OH, NO3 and Cl atoms in the absence and in the presence of NO have also been determined. The main reaction products obtained were chlorinated methylfuranones and hydroxy-methylfuranones in the reaction of 3-methylfuran with Cl atoms, 2-methylbutenedial, 3-methyl-2,5-furanodione and hydroxy-methylfuranones in the reaction of 3-methylfuran with OH and NO3 radicals and also nitrated compounds in the reaction with NO3 radicals. The results indicate that, in all cases, the main reaction path is the addition to the double bond of the aromatic ring followed by ring opening in the case of OH and NO3 radicals. The formation of 3-furaldehyde and hydroxy-methylfuranones (in the reactions of 3-methylfuran with Cl atoms and NO3 radicals) confirmed the H-atom abstraction from the methyl group and from the aromatic ring, respectively. This study represents the first product determination for Cl atoms and NO3 radicals in reactions with 3-methylfuran. The reaction mechanisms and atmospheric implications of the reactions under consideration are also discussed.

scholarly journals OH- and O3-initiated atmospheric degradation of camphene: temperature dependent rate coefficients, product yields and mechanisms

RSC Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 2733-2744 ◽  
Author(s):  
Elizabeth Gaona-Colmán ◽  
María B. Blanco ◽  
Ian Barnes ◽  
Peter Wiesen ◽  
Mariano A. Teruel
Keyword(s):  
Gas Phase ◽  
Relative Rate ◽  
Rate Coefficients ◽  
Temperature Dependent ◽  
Product Yields ◽  
Temperature Range ◽  
Dependent Rate ◽  
Atmospheric Degradation ◽  
Rate Method

Gas-phase rate coefficients for the reactions of OH and O3 with camphene have been measured over the temperature range 288–311 K using the relative rate method.

scholarly journals Gas-phase rate coefficients for a series of alkyl cyclohexanes with OH radicals and Cl atoms

2018 ◽  
Vol 50 (8) ◽  
pp. 544-555 ◽  
Author(s):  
Iustinian G. Bejan ◽  
Frank A. F. Winiberg ◽  
Nicholas Mortimer ◽  
Diogo J. Medeiros ◽  
Charlotte A. Brumby ◽  
...  
Keyword(s):  
Gas Phase ◽  
Rate Coefficients ◽  
Oh Radicals ◽  
Cl Atoms

scholarly journals Atmospheric oxidation of α,β-unsaturated ketones: kinetics and mechanism of the OH radical reaction

2021 ◽  
Author(s):  
Niklas Illmann ◽  
Rodrigo Gastón Gibilisco ◽  
Iustinian Gabriel Bejan ◽  
Iulia Patroescu-Klotz ◽  
Peter Wiesen
Keyword(s):  
Radical Reaction ◽  
Rate Coefficients ◽  
Organic Nitrates ◽  
Oh Radicals ◽  
Oh Radical ◽  
Peroxyacetyl Nitrate ◽  
Unsaturated Ketones ◽  
Product Yields ◽  
Mechanistic Investigation ◽  
Cl Atoms

Abstract. The OH radical initiated oxidation of 3-methyl-3-penten-2-one and 4-methyl-3-penten-2-one was investigated in two atmospheric simulation chambers at 298 ± 3 K and 990 ± 15 mbar using long-path FTIR spectroscopy. The rate coefficients of the reactions of 3-methyl-3-penten-2-one and 4-methyl-3-penten-2-one with OH radicals were determined to be (6.5 ± 1.2) × 10−11 cm3 molecule−1 s−1 and (8.1 ± 1.3) × 10−11 cm3 molecule−1 s−1, respectively. To enlarge the kinetics data pool the rate coefficients of the target species with Cl atoms were determined to be (2.8 ± 0.4) × 10−10 cm3 molecule−1 s−1 and (3.1 ± 0.4) × 10−10 cm3 molecule−1 s−1, respectively. The mechanistic investigation of the OH initiated oxidation focuses on the RO2 + NO reaction. The quantified products were acetoin, acetaldehyde, biacetyl, CO2 and peroxyacetyl nitrate (PAN) for the reaction of 3-methyl-3-penten-2-one with OH radicals and acetone, methyl glyoxal, 2-hydroxy-2-methylpropanal, CO2 and peroxyacetyl nitrate (PAN) for the reaction of 4-methyl-3-penten-2-one with OH, respectively. Based on the calculated product yields an upper limit of 0.15 was determined for the overall organic nitrates (RONO2) yield derived from the OH reaction of 4-methyl-3-penten-2-one. By contrast, no RONO2 formation was observed for the OH reaction of 3-methyl-3-penten-2-one. Additionally, a simple model is presented to correct product yields for secondary processes.

Sign in / Sign up

Export Citation Format

Share Document