Carbon, Disulfide Production

Thacker, Carlisle M.; Miller, Elmer

doi:10.1021/ie50410a019

Cited by 28 publications

(18 citation statements)

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“…Lepsoe (1937) presented equilibrium compositions for the reaction of hydrogen with sulfur dioxide and calculated the equilibrium constant for the reaction CH4 + 2SC>2 -* CO2 + S2 + H20. Thacker and Miller (1944) provided equilibria for methane, sulfur, and CS2 but they neither (Rl)…”

Section: Discussionmentioning

confidence: 99%

Thermodynamics of the Reaction between Sulfur Dioxide and Methane

Helstrom¹,

Atwood²

1977

Ind. Eng. Chem. Proc. Des. Dev.

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diffusion: its onset at fixed temperature, the drop in the slope of the constant line, and ratio of slopes.For nth-order reaction a treatment similar to that for first-order reactions but using the nth-order rate and the generalized Thiele modulus (see Bischoff, 1967) gives for the onset of strong pore diffusionWe can also show that the dividing line between regimes has a positive slope for > 1, and negative slope for < 1. Note that Figure 9 gives a vertical line for this transition for = 1.

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Section: Discussionmentioning

confidence: 99%

Thermodynamics of the Reaction between Sulfur Dioxide and Methane

Helstrom¹,

Atwood²

1977

Ind. Eng. Chem. Proc. Des. Dev.

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“…Among these processes include, the hydrodesulfurization and Claus processes to convert organosulfur compounds and hydrogen sulfide (H 2 S) into elemental sulfur (S 8 ) [1–3] . The generation and accessibility of H 2 S and S 8 from petroleum refining, in addition to other upstream sulfur products, such as, carbon disulfide (CS 2 ) creates a strong technological incentive for the petrochemical industry to create high value products from these abundant chemicals of oil refining [4–6] . Due to the large volumes of H 2 S, S 8 and CS 2 that are generated, the conversion of these materials into feedstocks for both commodity and specialty polymers has been identified as an attractive new revenue stream to increase the valorization of these chemicals which would profoundly affect these industrial sectors.…”

Section: Figurementioning

confidence: 99%

Segmented Polyurethanes and Thermoplastic Elastomers from Elemental Sulfur with Enhanced Thermomechanical Properties and Flame Retardancy

et al. 2021

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The production of elemental sulfur from petroleum refining has created atechnological opportunity to increase the valorization of elemental sulfur by the creation of highperformance sulfur based plastics with improved thermomechanical properties,elasticity and flame retardancy.W ereport on asynthetic polymerization methodology to prepare the first example of sulfur based segmented multi-block polyurethanes (SPUs) and thermoplastic elastomers that incorporate an appreciable amount of sulfur into the final target material. This approach applied both the inverse vulcanization of S 8 with olefinic alcohols and dynamic covalent polymerizations with dienes to prepare sulfur polyols and terpolyols that were used in polymerizations with aromatic diisocyanates and short chain diols.Using these methods,anew class of high molecular weight, soluble blockcopolymer polyurethanes were prepared as confirmed by SizeE xclusion Chromatography,N MR spectroscopy, thermal analysis,a nd microscopic imaging. These sulfur-based polyurethanes were readily solution processed into large area free standing films where both the tensile strength and elasticity of these materials were controlled by variation of the sulfur polyol composition. SPUs with both high tensile strength (13-24 MPa) and ductility (348 %strain at break) were prepared, along with SPU thermoplastic elastomers (578 %s train at break) which are comparable values to classical thermoplastic polyurethanes (TPUs). The incorporation of sulfur into these polyurethanes enhanced flame retardancy in comparison to classical TPUs,w hich points to the opportunity to impart new properties to polymeric materials as ac onsequence of using elemental sulfur.

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“…Hydrogen sulfide is formed when hydrogen is fed into sulfur at 350 C with or without a catalyst (e.g., bauxite, aluminum silicate, cobalt molybdate) [109], [110]. High pressure also aids the reaction.…”

Section: Production By Chemical Reactionmentioning

confidence: 99%

“…18 Hydrogen Sulfidehydrogen sulfide and carbon disulfide. Carbon disulfide can be hydrolyzed, giving additional hydrogen sulfide [110] , [115], [116]. With higher alkanes (>C 10 ) having a low vapor pressure, reaction takes place at 200 -300 C [115], [117].…”

Section: Production By Chemical Reactionmentioning

confidence: 99%

Hydrogen Sulfide

Pouliquen¹,

Blanc²,

Arretz³

et al. 2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Physical Properties 3. Chemical Properties 3.1. Acid Properties 3.2. Reducing Properties 3.3. Reactions with Organic Compounds 3.3.1. Hydrogen Sulfide as a Nucleophilic Reagent 3.3.2. Hydrogen Sulfide as a Radical Reagent 3.3.3. Reaction of Hydrogen Sulfide in the Form of Hydrosulfide 4. Production 4.1. Production by Chemical Reaction 4.2. Recovery from Gas 5. Environmental Protection 6. Analysis 7. Storage, Handling, and Transportation 7.1. Storage and Handling 7.2. Transportation 8. Uses 9. Economic Aspects 10. Toxicology 11. Occupational Health and Safety

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Carbon, Disulfide Production

Abstract: High yields of carbon disulfide can be obtained by the reaction of methane with sulfur at 700°C. and below when the reaction is carried out in the presence of a suitable cata-

Cited by 28 publications

References 1 publication

Thermodynamics of the Reaction between Sulfur Dioxide and Methane

Thermodynamics of the Reaction between Sulfur Dioxide and Methane

Segmented Polyurethanes and Thermoplastic Elastomers from Elemental Sulfur with Enhanced Thermomechanical Properties and Flame Retardancy

Hydrogen Sulfide

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