Synthesis of Mercaptans

Folkins, H. O.; Miller, Elmer

doi:10.1021/i260004a007

Cited by 24 publications

(11 citation statements)

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“…3b, one desorption peak at 400 K can be detected over all the catalysts, which is attributed to CO 2 desorbed from weak basic sites. For K 8 Mo 1 /c-Al 2 O 3 and K 4 Mo 1 /c-Al 2 O 3 catalysts, the wide shoulder desorption peaks are potentially attributed to the decomposition of K 2 CO 3 at higher than 600 K. Furthermore, the intensity of the bands for weak basic sites was significantly enhanced with the molar ratio of K/Mo increasing, and the quantities of weak basic sites varied in the sequence: 3 , which probably because that K ? cation made the alkalinity of the catalysts enhanced with the molar ratio of K/Mo increasing.…”

Section: Surface Acid-base Propertiesmentioning

confidence: 98%

“…The desorbed NH 3 was monitored with a MS signal of m/e = 16 and 17 in multiple ion detection (MID) mode. So did the CO 2 -TPD experiment as NH 3 -TPD experiment had been done with CO 2 substituting for NH 3 . Desorbed CO 2 component was monitored with a MS signal of m/e = 44 in MID mode.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…In particular, the main application of methanethoil is to produce methionine, widely used as a feed supplement for poultry [1,2]. Industrially, methanethiol is predominantly produced by the reaction of methanol and hydrogen sulfide over the transition metal oxide-supported and alkali metal-promoted c-Al 2 O 3 catalysts [3][4][5][6]. However, as early as 1960s, Olin et al [7] reported that the H 2 S-containing synthesis gas is a feasible route for the production of methanethiol.…”

Section: Introductionmentioning

confidence: 99%

“…And what is more, compared to the CH 3 OH-H 2 S route, H 2 S-containing synthesis gas as a simple feedstock for the production of methanethiol has a significant economic advantage [8,9]. In the past 20 years, the reaction routes for the formation of methanethiol mainly include CH 3 OH-H 2 S reaction method [10][11][12], H 2 S-containing synthesis gas conversion method [13][14][15][16], CH 3 SCH 3 -H 2 S conversion method [17][18][19], and COS-H 2 S-H 2 conversion method [20][21][22] and so on. The synthesis of methanethiol from carbon disulfide and hydrogen, however, is seldom reported and needs to be explored in more detail.…”

Section: Introductionmentioning

confidence: 99%

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Catalytic Synthesis of Methanethiol from Carbon Disulfide and Hydrogen Over Sulfided KMo/Al2O3 Catalysts

et al. 2015

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A series of K x Mo/c-Al 2 O 3 catalysts (x = 1, 2, 4, 8), used for the catalytic synthesis of methanethiol from carbon disulfide and hydrogen, were prepared, and characterized by N 2 adsorption-desorption, XRD, in situ pyridine adsorption FT-IR and NH 3 /CO 2 -TPD techniques. Experimental results showed that all the K x Mo/c-Al 2 O 3 catalysts can undergo sulfurization process during the reaction, and the alkalinity of the catalysts was significantly enhanced with increasing in the molar ratio of K to Mo. In addition, the alkalinity of the catalysts was found to be conducive to the improvement of yield of methyl mercaptan, while the acidity of the catalysts significantly promoted the disproportionation of CH 3 SH-CH 3 SCH 3 and the hydrogenation to CH 4 . The conversion of CS 2 was found to be 100 % on all the catalysts in the evaluated temperature range from 533 to 653 K. The optimal yield of CH 3 SH was found to be 94.6 % over K 4 Mo/c-Al 2 O 3 catalyst, when the reaction temperature was at 583 K. Graphical AbstractKeywords Methanethiol Á Carbon disulfide Á

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Section: Surface Acid-base Propertiesmentioning

confidence: 98%

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Catalytic Synthesis of Methanethiol from Carbon Disulfide and Hydrogen Over Sulfided KMo/Al2O3 Catalysts

et al. 2015

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“…300 C. Thiols were first obtained by reacting hydrogen sulfide with alcohols on thorin or on pumice impregnated with thorin [73]. Subsequently, more selective, more active catalysts were developed based on activated alumina containing promoters such as soda or potash [74], metallic oxides, alkaline salts of transition-metal oxo acids [75], and heteropolyacids or their alkaline salts [76].…”

Section: Hydrogen Sulfide As a Nucleophilic Reagentmentioning

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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Thiols and Organic Sulfides

Roy¹

2000

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Aliphatic Thiols, Sulfides, Disulfides, and Polysulfides 1.1. Introduction 1.2. Properties of Aliphatic Thiols 1.2.1. Physical Properties 1.2.2. Chemical Properties 1.3. Production of Aliphatic Thiols 1.3.1. From Alcohols 1.3.2. From Alkenes 1.3.3. Other Production Methods 1.4. Construction Materials, Storage, and Transport 1.5. Uses of Aliphatic Thiols 1.6. Alkyl Sulfides, Disulfides, and Polysulfides 1.6.1. Physical and Chemical Properties 1.6.2. Production of Alkyl Sulfides 1.6.3. Production of Alkyl Disulfides 1.6.4. Production of Alkyl Polysulfides 1.6.5. Uses of Alkyl Sulfides, Disulfides, and Polysulfides 2. Aromatic Thiols, Sulfides, Disulfides, and Polysulfides 2.1. Physical and Chemical Properties 2.2. Production of Aromatic Thiols 2.2.1. By Reduction 2.2.2. By Thiolation 2.3. Uses of Aromatic Thiols 2.4. Production of Aryl Sulfides, Disulfides, and Polysulfides 2.5. Uses of Aryl Sulfides, Disulfides, and Polysulfides 3. Heterocyclic Thiols, Sulfides, and Disulfides 3.1. Introduction 3.2. Physical and Chemical Properties 3.3. Production 3.3.1. Heterocyclic Thiols by Substitution 3.3.2. Heterocyclic Thiols by Cyclization 3.3.3. Heterocyclic Sulfides and Disulfides 3.4. Uses of Heterocyclic Thiols, Sulfides, and Disulfides 3.4.1. Pharmaceuticals 3.4.2. Agricultural Chemicals 3.4.3. Other Uses 4. Toxicology 5. Acknowledgement

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Synthesis of Mercaptans

Cited by 24 publications

References 1 publication

Catalytic Synthesis of Methanethiol from Carbon Disulfide and Hydrogen Over Sulfided KMo/Al2O3 Catalysts

Catalytic Synthesis of Methanethiol from Carbon Disulfide and Hydrogen Over Sulfided KMo/Al2O3 Catalysts

Hydrogen Sulfide

Thiols and Organic Sulfides

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