scholarly journals Extractants Based on Coordinating Liquid Polar Solvents for Removal of Sulfur Compounds from Diesel Fuels

2018 ◽  
Vol 8 (8) ◽  
pp. 1259 ◽  
Author(s):  
Natalia Kobotaeva ◽  
Tatiana Skorokhodova ◽  
Oleg Andrienko ◽  
Elena Marakina ◽  
Victor Sachkov
Keyword(s):  
Organic Solvents ◽  
Solvent Molecule ◽  
Diesel Fraction ◽  
Polar Solvents ◽  
Acceptor Center ◽  
Metal Chlorides ◽  
Diesel Fuels ◽  
Metal Trifluoroacetates ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

To remove sulfur-containing compounds (SCC) from the diesel fraction 200–360 °C extraction systems have been created based on coordinating organic solvents—dimethylformamide and dimethylsulfoxide, metal chlorides (CoCl2, CuCl2, CdCl2, MnCl2 and CrCl3), and metal trifluoroacetates (Co(TFA)2, Cu(TFA)2 and Mn(TFA)2). Using PMR spectroscopy the coordination of metal chloride and metal trifluoroacetate on the oxygen atom in the carbonyl group of DMF was shown to redistribute electron density in the solvent molecule and to enhance properties of the acceptor center localized on the nitrogen atom. The removal of sulfur-containing compounds from the diesel fraction proceeded under mild conditions—at the temperature of 25 °C and atmospheric pressure. The degree of SCC removal from the diesel fraction in 30 minutes extraction was more than 90%. The interaction of organic solvents with metal salts and sulfur-containing compounds of the diesel fraction was considered within the framework of the concept of “hard and soft acids and bases” (HSAB). The most complete SCC extraction was carried out with DMF-Mn(TFA)2, MnCl2 and CrCl3 systems, that was probably connected with the implementation of the ‘hard base–hard acid’ system.

scholarly journals Extractants Based on Coordinating Liquid Polar Solvents for Removal of Sulfur Compounds from Diesel Fuels

2018 ◽  
Author(s):  
Natalia Kobotaeva ◽  
Tatiana Skorohodova ◽  
Oleg Andrienko ◽  
Elena Marakina ◽  
Victor Sachkov
Keyword(s):  
Organic Solvents ◽  
Atmospheric Pressure ◽  
Solvent Molecule ◽  
Diesel Fraction ◽  
Polar Solvents ◽  
Acceptor Center ◽  
Diesel Fuels ◽  
Metal Trifluoroacetates ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

To remove sulfur-containing compounds (SCC) from the diesel fraction 200-360 °C extraction systems have been created based on coordinating organic solvents - dimethylformamide and dimethylsulfoxide and chlorides (CoCl2, CuCl2, CdCl2, MnCl2 and CrCl3) and metal trifluoroacetates (Co (TFA)2, Cu(TFA)2 and Mn(TFA)2). Using PMR spectroscopy the coordination of chloride and metal trifluoroacetate on the oxygen atom in the carbonyl group of DMFA was shown to redistribute electron density in the solvent molecule and to enhance properties of the acceptor center localized on the nitrogen atom. The removal of sulfur-containing compounds from the diesel fraction proceeded under mild conditions - at the temperature of 25 °C and atmospheric pressure. The degree of SCC removal from the diesel fraction in 30 minutes extraction was more than 90%. The interaction of organic solvents with metal salts and sulfur-containing compounds of the diesel fraction was considered within the framework of the concept of "hard and soft acids and bases" (HSAB). The most complete SCC extraction was carried out by "DMFA - Mn(TFA)2, MnCl2 and CrCl3 systems, that was probably connected with the implementation of the" hard base - hard acid "system.

Molecular Reconstruction of Hydrocarbons and Sulfur-Containing Compounds in Atmospheric and Vacuum Gas Oils

2021 ◽  
Author(s):  
Aleksandar Bojkovic ◽  
Thomas Dijkmans ◽  
Hang Dao Thi ◽  
Marko Djokic ◽  
Kevin M. Van Geem
Keyword(s):  
Sulfur Containing ◽  
Sulfur Containing Compounds

scholarly journals Effect of WC/Ni–Cr additive on changes in the composition of an atmospheric residue in the course of cracking

2019 ◽  
Vol 17 (2) ◽  
pp. 499-508 ◽  
Author(s):  
Galina S. Pevneva ◽  
Natalya G. Voronetskaya ◽  
Nikita N. Sviridenko ◽  
Anatoly K. Golovko
Keyword(s):  
Molecular Weight ◽  
Tungsten Carbide ◽  
Aromatic Hydrocarbons ◽  
Aromatic Compounds ◽  
Low Molecular Weight ◽  
Nickel Chromium ◽  
Atmospheric Residue ◽  
Sulfur Containing ◽  
Catalytic Additive ◽  
Sulfur Containing Compounds

AbstractThe paper presents the results of investigation of changes in the composition of hydrocarbons and sulfur-containing compounds of an atmospheric residue in the course of cracking in the presence of a tungsten carbide–nickel–chromium (WC/Ni–Cr) catalytic additive and without it. The cracking is carried out in an autoclave at 500 °C for 30 min. The addition of the WC/Ni–Cr additive promotes the deepening of reactions of destruction not only of resins and asphaltenes, but also high molecular weight naphthene-aromatic compounds of the atmospheric residue. It is shown that the content of low molecular weight C9–C17 n-alkanes and C9–C10 alkylbenzenes rose sharply in the products of cracking with addition of WC/Ni–Cr in comparison with those produced without the additive. Alkyl- and naphthene-substituted aromatic hydrocarbons of benzene, naphthalene, phenanthrene series, polyarenes, benzo- and dibenzothiophenes are identified.

Effect of sulfur-containing compounds on viscose ripening

1980 ◽  
Vol 11 (3) ◽  
pp. 208-210
Author(s):  
E. P. Ovchinnikova ◽  
L. S. Abramova ◽  
Z. A. Rogovin
Keyword(s):  
Sulfur Containing ◽  
Sulfur Containing Compounds

Studies on analogs of DAMASCENOLIDETM: Part 4. Synthesis and odor evaluation of sulfur-containing analogs of DAMASCENOLIDETM

2021 ◽  
Author(s):  
Yamato Miyazawa ◽  
Kenji Kawaguchi ◽  
Ryo Katsuta ◽  
Tomoo Nukada ◽  
Ken Ishigami
Keyword(s):  
Sulfur Atom ◽  
Development Project ◽  
Aroma Compounds ◽  
Odor Intensity ◽  
Aroma Compound ◽  
Odor Evaluation ◽  
Damask Rose ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds

ABSTRACT DAMASCENOLIDETM [1, 4-(4-methylpent-3-en-1-yl)furan-2(5H)-one], which is isolated from damask rose, is a useful aroma compound with a citrus-like odor. We have previously reported on the synthesis and odor properties of 34 analogs of 1 as part of our new aroma compound development project. In order to develop better aroma compounds and to gather more information on structure-odor relationships, six novel sulfur-containing analogs of 1 were synthesized. Odor evaluation revealed that their odors differed significantly from those of the corresponding sulfur-free compounds. The introduction of a sulfur atom does not necessarily result in a sulfur-like odor. In particular, the 2(5H)-thiophenone analogs gave waxy, oily and lactone-like odors that are uncharacteristic of sulfur-containing compounds. In many synthesized analogs, the introduction of a sulfur atom led to an increase in odor intensity, as expected.

Control of the Nephrotoxicity of Cisplatin by Clinically Used Sulfur-Containing Compounds

1992 ◽  
Vol 18 (2) ◽  
pp. 181-188
Author(s):  
MARK M. JONES ◽  
MARK A. BASINGER ◽  
MYRON A. HOLSCHER
Keyword(s):  
Sulfur Containing ◽  
Sulfur Containing Compounds

Biochemical methods of freeing gas-air mixtures from sulfur containing compounds

1988 ◽  
Vol 19 (6) ◽  
pp. 373-378 ◽  
Author(s):  
I. G. Shimko ◽  
V. A. Spasov ◽  
S. K. Chinennaya ◽  
R. I. Zakirova ◽  
I. N. Tananina ◽  
...  
Keyword(s):  
Biochemical Methods ◽  
Sulfur Containing ◽  
Sulfur Containing Compounds
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