Synthesis of methyl mercaptan from methanol and hydrogen sulfide on acidic catalysts
A study has been made of the interaction of methanol with excess H/sub 2/S at 360/degrees/C on acidic-type catalysts. It has been established that the most active in forming methyl mercaptan (MM) are ..gamma..-Al/sub 2/O/sub 3/, /eta/-Al/sub 2/O/sub 3/, and oxides of V, Mo, W, and Cr - either massive or supported on Al/sub 2/O/sub 3/. The use of SiO/sub 2/ or AlSi (aluminosilicate) as a support results in lower catalyst activities. The overall activity of the catalysts is increased with increasing surface concentration and strength of the aprotic centers. The selectivity with respect to MM formation at conversions above 60% is no greater than 50%, owing to further reaction of MM with methanol to form dimethyl sulfide. The reaction presumably proceeds through a stage of interaction of activated H/sub 2/S with CH/sub 3/O surface groupings that are formed by dissociation chemisorption of methanol.
- Research Organization:
- Institute of Catalysis, Novosibirsk (USSR)
- OSTI ID:
- 5923253
- Journal Information:
- Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 29:3; ISSN KICAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ALUMINIUM SILICATES
ANTIMONY COMPOUNDS
ANTIMONY OXIDES
BORON COMPOUNDS
BORON OXIDES
CATALYSIS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISORPTION
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COMPARATIVE EVALUATIONS
DEUTERIUM COMPOUNDS
HETEROGENEOUS CATALYSIS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXY COMPOUNDS
INFRARED SPECTRA
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
METHANOL
MINERALS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SEPARATION PROCESSES
SILICA
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SORPTION
SPECTRA
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THIOLS
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
VANADIUM COMPOUNDS
VANADIUM OXIDES
ZEOLITES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES