FIELD: biotechnology.
SUBSTANCE: invention relates to a process for the preparation of dimethyl sulfoxide which comprises the following steps: (1) contacting hydrogen sulfide with methanol to produce a mixture containing dimethyl sulfide, and separating dimethyl sulfide from the mixture; and (2) in the presence of a solvent, contacting dimethyl sulfide obtained in step (1) with at least one oxidant and a catalyst to produce a mixture containing dimethyl sulfoxide, wherein said catalyst comprises at least one titanium silicate molecular sieve, the solvent is selected from water and C1-C6-alcohol.
EFFECT: invention relates to a process for the preparation of dimethyl sulfoxide.
25 cl, 2 dwg, 20 ex, 1 tbl
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