Sulphur heterocycles in coal-derived products

Nishioka, Masaharu; Lee, Milton L.; Castle, Raymond N.

doi:10.1016/0016-2361(86)90301-7

Cited by 68 publications

(30 citation statements)

References 41 publications

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“…Benzothiophene (BT) and dibenzothiophene are typical polycyclic aromatic sulfur hydrocarbons (PASHs) with basic structural element of PASHs in coal-derived liquids and crude oils (Nishioka et al, 1986). Many researchers have reported the toxic and mutagenic potential of PASHs (Eastmond et al, 1984;Karcher et al, 1981;Pelroy et al, 1983;McFall et al, 1984).…”

Section: Introductionmentioning

confidence: 99%

Sonochemical degradation of polycyclic aromatic sulfur hydrocarbons (PASHs) in aqueous solutions exemplified by benzothiophene

Kim

Huang²

2005

Journal of the Chinese Institute of Engineers

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The degradation of polycyclic aromatic sulfur hydrocarbons (PASHs) in aqueous solutions due to sonochemical processes was studied. Benzothiophene (BT), and dibenzothiophene (DBT) in addition to two polycyclic aromatic hydrocarbons, namely phenanthrene (Phe) and naphthalene (Nap) were compared. Results showed that all polycyclic aromatic compounds were decomposed rapidly following a pseudo-first-order kinetics upon ultrasonic irradiation in aqueous solutions. The rate constant increased with increasing pH and decreased with increasing initial benzothiophene concentration. Whereas, for temperature, the rate increased with temperature up to 50°C then decreased upon further increase in temperature above 50°C. Hydroxybenzothiophenes, dihydroxybenzothiophenes, and benzothiophene-dione were identified as major intermediates. Also evolution of carbon dioxide and sulfite was observed. Hydroxyl radicals play the major role in the decomposition of PASHs. The toxicity of sonochemically treated solutions was evaluated by monitoring the respiration rate of E. coli. Results indicate that a sonochemically treated benzothiophene sample improved the respiration rate of E. coli compared to an untreated sample.

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Section: Introductionmentioning

confidence: 99%

Sonochemical degradation of polycyclic aromatic sulfur hydrocarbons (PASHs) in aqueous solutions exemplified by benzothiophene

Kim

Huang²

2005

Journal of the Chinese Institute of Engineers

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“…The carrier gas was helium. Com pounds were identified according to their retention times by comparing the mass fragmentograms with mass spectra available in the NIST and WILEY librar ies and published data [11][12][13][14][15][16][17][18]. The amount of the components in the oils was determined from peak areas.…”

Section: Methodsmentioning

confidence: 99%

Aromatic sulfur-containing structural units of resins and asphaltenes in heavy hydrocarbon feedstock

et al. 2012

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The composition of aromatic sulfur compounds of oils formed during the thermolysis (160-650°C) of resins and asphaltenes from heavy crude of the Permian-Carboniferous deposit in the Usa oilfield (Komi Republic) has been studied. (C 1 -C 4 ) alkylbenzothiophenes; dibenzothiophene and (C 1 -C 3 ) alkyl derivatives; and phenanthro[4,5 bcd] , benzo[b]naphtho , triphenyleno[1,12 bcd] , dinaphtho[2,3 b:2',3' d] , perylo[1,12 bcd] , benzothieno[3,2 b]benzo , benzo[1,2 b:3,4 b']bisbenzo , and phenyldiben zothiophenes have been identified. The tri and tetracyclic structures with predominance of diben zothiophene and benzo[b]naphtho[2,1 d]thiophene prevail in the oils obtained by the thermolysis of resins and asphaltenes.

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“…Praparativ wurden 4b und 6b-8b durch Um-* Korrespondenz bitte an diesen Autor richten. Wir kommen zu dem Ergebnis, dap anellierte Thiophene selektiv zu Sulfonen oxidiert werden konnen, wenn keine Bindungen zwischen Thiophen-C-und Methylen-C-Atomen vorhanden sind (2, 3,5,[9][10][11]. Bei Vorliegen von Bindungen zwischen Thiophen-C-und Methylen-C-Atomen (1, 4, 6-8) reicht dagegen die Selektivitat der Oxidation fur ein analytisches Verfahren nicht aus.…”

Section: Eine Moglichkeit Zur Analytischen Erfassung Von Anellierten unclassified

SCHWEFELVERBINDUNGEN DES ERDÖLS XIV¹. OXIDATION VON THIOPHENEN MIT AROMATISCHEN UND NICHTAROMATISCHEN b,d-ANELLIERTEN RINGEN

Nink

Boberg

1991

Phosphorus, Sulfur, and Silicon and the Related Elements

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Sulphur heterocycles in coal-derived products

Cited by 68 publications

References 41 publications

Sonochemical degradation of polycyclic aromatic sulfur hydrocarbons (PASHs) in aqueous solutions exemplified by benzothiophene

Sonochemical degradation of polycyclic aromatic sulfur hydrocarbons (PASHs) in aqueous solutions exemplified by benzothiophene

Aromatic sulfur-containing structural units of resins and asphaltenes in heavy hydrocarbon feedstock

SCHWEFELVERBINDUNGEN DES ERDÖLS XIV¹. OXIDATION VON THIOPHENEN MIT AROMATISCHEN UND NICHTAROMATISCHEN b,d-ANELLIERTEN RINGEN

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Sulphur heterocycles in coal-derived products

Cited by 68 publications

References 41 publications

Sonochemical degradation of polycyclic aromatic sulfur hydrocarbons (PASHs) in aqueous solutions exemplified by benzothiophene

Sonochemical degradation of polycyclic aromatic sulfur hydrocarbons (PASHs) in aqueous solutions exemplified by benzothiophene

Aromatic sulfur-containing structural units of resins and asphaltenes in heavy hydrocarbon feedstock

SCHWEFELVERBINDUNGEN DES ERDÖLS XIV1. OXIDATION VON THIOPHENEN MIT AROMATISCHEN UND NICHTAROMATISCHEN b,d-ANELLIERTEN RINGEN

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SCHWEFELVERBINDUNGEN DES ERDÖLS XIV¹. OXIDATION VON THIOPHENEN MIT AROMATISCHEN UND NICHTAROMATISCHEN b,d-ANELLIERTEN RINGEN