Catalytic conversion of dimethyl sulfide to methyl mercaptan
A study was carried out on the catalytic conversion of dimethyl sulfide (DMS) to methyl mercaptan (MM) in the presence of hydrogen sulfide at 280-475/sup 0/C. The contact time was 0.2-80 sec. The concentration of DMS in the starting mixture was varied from 10 to 34 vol. %. An increase in the conversion of DMS to MM occurs with increasing temperature, increasing contact time, and decreasing DMS concentration in the starting mixture. The effect of acid-base characteristics of the catalyst surface on the rate of conversion of DMS to MM was demonstrated for a series of catalysts. Catalysts with predominantly basic sites have low activity, while protic acid sites have moderate activity. The greatest rate of conversion of DMS to MM is observed on catalysts with a large amount of strong aprotic acid sties (pure ..gamma..-Al/sub 2/O/sub 3/ and acid-promoted ..gamma..-Al/sub 2/O/sub 3/).
- Research Organization:
- Institute of Catalysis, Novosibirsk (USSR)
- OSTI ID:
- 6181094
- Journal Information:
- Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 29:2; ISSN KICAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ALUMINIUM SILICATES
AMMONIUM COMPOUNDS
AMMONIUM TUNGSTATES
CARBON COMPOUNDS
CARBONATES
CATALYSIS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION YIELD
CHROMATOGRAPHY
HETEROGENEOUS CATALYSIS
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXIDES
INORGANIC ACIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MATERIALS TESTING
MINERALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
SEPARATION PROCESSES
SILICA
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SPECTRA
SULFIDES
SULFUR COMPOUNDS
SULFURIC ACID
TESTING
THIOLS
TUNGSTATES
TUNGSTOPHOSPHORIC ACID
YIELDS
ZEOLITES