Reactions of hydroxyl radicals with methanethiol, dimethyl sulfide, and dimethyl disulfide in air

1983 ◽  
Vol 87 (13) ◽  
pp. 2387-2395 ◽  
Author(s):  
Shiro Hatakeyama ◽  
Hajime Akimoto
Keyword(s):  
Hydroxyl Radicals ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide

scholarly journals H–Abstraction from Dimethyl Sulfide in the Presence of an Excess of Hydroxyl Radicals. A Quantum Chemical Evaluation of Thermochemical and Kinetic Parameters Unveil an Alternative Pathway to Dimethyl Sulfoxide.

2020 ◽  
Author(s):  
Zoi Salta ◽  
Jacopo Lupi ◽  
Vincenzo Barone ◽  
Oscar Ventura
Keyword(s):  
Dimethyl Sulfoxide ◽  
Hydroxyl Radicals ◽  
Quantum Chemical ◽  
Dimethyl Sulfide ◽  
Computational Study ◽  
Alternative Pathway ◽  
Oxidation Mechanism ◽  
State Theory ◽  
Rate Coefficients ◽  
Reduced Sulfur Compounds

<div> Elucidation of the oxidation mechanism of naturally emitted reduced sulfur compounds, especially dimethyl sulfide, plays a central role in understanding background acid precipitation in the natural environment. Most frequently, theoretical studies of the addition and H-elimination reactions of dimethyl sulfide with hydroxyl radicals are studied considering the presence of oxygen that further reacts with the radicals formed in the initial steps. Although the reaction of intermediate species with additional hydroxyl radicals has been considered as part of the global mechanism of oxidation, few if any attention has been dedicated to the possibility of reactions of the initial radicals with a second •OH molecule. In this work we performed a computational study using quantum-chemical methods, of the mechanism of H-abstraction from dimethyl sulfide under normal atmospheric conditions and in reaction chambers at different O2 partial pressure, including complete absence of oxygen. Additionally, important rate coefficients were computed using canonical and variational transition state theory. The rate coefficient for abstraction affords a 4.72 x 10-12 cm3 molecule1 s-1 value, very close to the most recent experimental one (4.13 x 10-12 cm3 molecule-1 s-1). According to our best results, the initial methyl thiomethyl radical was obtained at -25.2 kcal/mol (experimentally -22.4 kcal/mol), and four important paths were identified on the potential energy surface. From the interplay of thermochemical and kinetic arguments, it was possible to demonstrate that the preferred product of the reaction of dimethyl sulfide with two hydroxyl radicals, is actually dimethyl sulfoxide. </div><div> </div>

Volatile Sulfur Compounds Produced by Methionine Degrading Bacteria and the Relationship to Concrete Corrosion

1984 ◽  
Vol 39 (3-4) ◽  
pp. 240-243 ◽  
Author(s):  
Manfred Pohl ◽  
Eberhard Bock ◽  
Marian Rinken ◽  
Mitat Aydin ◽  
Wilfried A. König
Keyword(s):  
Waste Water ◽  
Gas Chromatography ◽  
Glucose Concentration ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide ◽  
Proteus Vulgaris ◽  
Concrete Corrosion ◽  
Degrading Bacteria ◽  
The Relationship ◽  
Volatile Sulfur

Pseudomonas fluorescens, Proteus vulgaris, and Serratia marcescens, members of the microflora of soil and waste water, attacked methionine in the presence of glucose. The sulfur of methionine was released as methane thiol, dimethyl sulfide and dim ethyl disulfide. The volatile sulfur com pounds were qualitatively and quantitatively investigated by gas chromatography. Dimethyl disulfide was formed of methane thiol by various bacteria to a different extent. Growing in the presence of oxygen, S. marcescens oxidized most of the m ethane thiol to dim ethyl disulfide. In the presence of glucose. P. fluorescens dissimilated m ethionine with production of m ethane thiol and dimethyl disulfide. The dissimilation was stimulated with decreasing glucose concentration

Control of dimethyl sulfide and dimethyl disulfide odors during pig manure composting using nitrogen amendment

2017 ◽  
Vol 224 ◽  
pp. 419-427 ◽  
Author(s):  
Bing Zang ◽  
Shuyan Li ◽  
Frederick C. Michel ◽  
Guoxue Li ◽  
Difang Zhang ◽  
...  
Keyword(s):  
Dimethyl Sulfide ◽  
Dimethyl Disulfide ◽  
Pig Manure ◽  
Nitrogen Amendment

Activity of catalysts in the synthesis of dimethyl sulfide from dimethyl disulfide

2009 ◽  
Vol 50 (3) ◽  
pp. 414-419 ◽  
Author(s):  
A. V. Mashkina ◽  
L. N. Khairulina
Keyword(s):  
Dimethyl Sulfide ◽  
Dimethyl Disulfide
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