Process for the production of mono-halothiophenols and thiophenols
AssigneeStauffer Chemical Company
InventorKyung S. Shim
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Abstract
A process for the production of a mono-halothiophenol, e.g. para-chlorothiophenol, and thiophenol. The process comprises reacting a reactant mixture of benzene and dihalobenzene, e.g. para-dichlorobenzene, with hydrogen sulfide in the presence of an absorptive catalyst, such as activated carbon, calcined petroleum coke, etc.
Claims16
A process for the production of mono-halothiophenol and thiophenol comprising reacting a reactant mixture of benzene and dihalobenzene with hydrogen sulfide in the presence of an absorptive catalyst having a surface area of from about 1 to about 1,000 square meters per gram and selected from the group consisting of:
- activated carbon,
- petroleum coke,
- charcoal,
- calcined petroleum coke,
- alumina,
- clay,
- silica gel, and
- molecular sieves.
In a process for producing thiophenol by reacting benzene with hydrogen sulfide in the presence of an absorptive catalyst, the improvement comprising increasing the yield of thiophenol by reacting in the presence of a yield increasing amount of dihalobenzene.
Dependencies are inferred from the claim text.