The reactions of carbon with sulphur compounds. Part 4. Adsorption of gaseous sulphur and carbon disulphide by charcoal

1956 ◽  
Vol 52 ◽  
pp. 660 ◽  
Author(s):  
K. W. Sykes ◽  
P. White
Keyword(s):  
Carbon Disulphide ◽  
Sulphur Compounds

Effect of sulphur compounds on the heptane pyrolysis kinetics

1985 ◽  
Vol 50 (12) ◽  
pp. 2893-2902 ◽  
Author(s):  
Martin Bajus ◽  
Jozef Baxa
Keyword(s):  
Thermal Decomposition ◽  
Stainless Steel ◽  
Carbon Disulphide ◽  
Reaction Times ◽  
Pyrolysis Kinetics ◽  
Sulphur Compounds ◽  
Dithiophosphoric Acid ◽  
Tube Reactor ◽  
Flow Through ◽  
Steel Flow

The effect of 1-didecyl sulphide, diethyl disulphide, p,p'-dichlorodiphenyl disulphide, 1-butanethiol, 0,0'-di-1-butyl dithiophosphate zinc, 0,0'-diethyl dithiophosphoric acid and carbon disulphide, respectively, on the kinetics and selectivity of the thermal decomposition of heptane at 700 °C and 100 kPa was studied in a stainless steel flow-through tube reactor. The sulphur substance content was 0.1-1.0 wt.%. 1-Didecyl sulphide, p,p'-dichlorodiphenyl disulphide, 1-butylthiol, 0,0'-di-1-butyl dithiophosphate zinc and carbon disulphide favour the decomposition of heptane by 5-17%. A decrease in the heptane decomposition rate was observed in the presence of diethyl disulphide (2.8%) and 0,0'-diethyl dithiophosphoric acid (13.9%). The selectivity of decomposition to ethylene is increased by diethyl disulphide, p,p'-dichlorodiphenyl disulphide, carbon disulphide and 1-didecyl sulphide and, in the range of short reaction times, also by 0,0'-diethyl dithiophosphoric acid, 0,0'-di-1-butyl dithiophosphate zinc and 1-butanethiol.

Chemiluminescence from the reactions of ozone with sulphur compounds

1984 ◽  
Vol 62 (3) ◽  
pp. 417-423 ◽  
Author(s):  
P. K. Arora ◽  
J. P. S. Chatha
Keyword(s):  
Gas Phase ◽  
Singlet State ◽  
Carbon Disulphide ◽  
Emission Spectra ◽  
Reaction Pathways ◽  
Ozone Molecule ◽  
Dimethyl Sulphide ◽  
Sulphur Compounds ◽  
Remarkable Similarity ◽  
Dimethyl Disulphide

Emissions from excited SO2 in its singlet state (1B1, and/or 1A2) and triplet state (3B1) have been observed in gas-phase chemiluminescent reactions of ozone with a number of sulphur compounds. The compounds studied are carbon disulphide, thiophene, diallyl sulphide, diallyl disulphide, dimethyl sulphide, dimethyl disulphide, and thiophenol. The reaction pathways responsible for the formation of excited molecules are discussed. The remarkable similarity between the emission spectra of the reactions and the chemiluminescence from the SO + O3 reaction confirms that SO is a precursor for the observed chemiluminescence. Disulphides are found to be more chemiluminescent than monosulphides. The absence of chemiluminescence from HCHO* in the reactions of ozone with allyl sulphide and disulphide indicates that the attack of ozone molecule is on the C—S bond in organic sulphides.

Coke formation during the pyrolysis of hydrocarbons in the presence of sulphur compounds

1985 ◽  
Vol 50 (12) ◽  
pp. 2903-2909 ◽  
Author(s):  
Martin Bajus ◽  
Jozef Baxa
Keyword(s):  
Carbon Disulphide ◽  
Coke Formation ◽  
Steel Tube ◽  
Inhibition Mechanism ◽  
Stainless Steel Tube ◽  
Tube Flow ◽  
Sulphur Compounds ◽  
Dithiophosphoric Acid ◽  
Inhibiting Effect ◽  
Flow Through

The effect of 1-butanethiol, 0,0'-di-1-butyl dithiophosphate zinc, 0,0'-diethyl dithiophosphoric acid and carbon disulphide, respectively, on the formation of coke during the pyrolysis of a reformer raffinate at 820 °C and 100 kPa was studied using a stainless steel tube flow-through reactor. The sulphur compounds were added in amounts of 0.05 to 5.0 wt.%. The coke formation was followed from the beginning of the experiment. The coking rate was lower as compared with the pyrolysis of the pure reformer raffinate; 0,0'-di-1-butyl dithiophosphate zinc, 0,0'-diethyl dithiophosphoric acid and carbon disulphide have a strong inhibiting effect on the coke formation. The coking inhibition mechanism is discussed.

Oxidation Of Sulphur Compounds

1884 ◽  
Vol 17 (438supp) ◽  
pp. 6995-6996
Author(s):  
G. Lunge
Keyword(s):  
Sulphur Compounds

The Liquefaction of Oxygen and the Solidification of Carbon Disulphide and Alcohol

1883 ◽  
Vol 16 (416supp) ◽  
pp. 6641-6641
Author(s):  
S. V. Wroblewski ◽  
K Olszewski
Keyword(s):  
Carbon Disulphide

Microbial efficiency in a meromictic reservoir

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Grażyna Mazurkiewicz-Boroń ◽  
Teresa Bednarz ◽  
Elżbieta Wilk-Woźniak
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Consumption ◽  
Release Rate ◽  
Oxygen Consumption Rate ◽  
Consumption Rate ◽  
Metabolic Efficiency ◽  
Sulphur Compounds ◽  
Carbon Dioxide Release ◽  
Microbial Efficiency ◽  
Ion Contents

Microbial efficiency in a meromictic reservoirIndices of microbial efficiency (expressed as oxygen consumption and carbon dioxide release) were determined in the water column of the meromictic Piaseczno Reservoir (in an opencast sulphur mine), which is rich in sulphur compounds. Phytoplankton abundances were low in both the mixolimnion (up to 15 m depth) and monimolimnion (below 15 m depth). In summer and winter, carbon dioxide release was 3-fold and 5-fold higher, respectively, in the monimolimnion than in the mixolimnion. Laboratory enrichments of the sulphur substrate of the water resulted in a decrease in oxygen consumption rate of by about 42% in mixolimnion samples, and in the carbon dioxide release rate by about 69% in monimolimnion samples. Water temperature, pH and bivalent ion contents were of major importance in shaping the microbial metabolic efficiency in the mixolimnion, whilst in the monimolimnion these relationships were not evident.

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