CATALYST, METHOD OF MAKING SAID CATALYST AND METHOD OF OBTAINIING DIMETHYL SULPHIDE Russian patent published in 2009 - IPC B01J27/43 B01J21/04 B01J37/02 C07C319/14 C07C321/12 

FIELD: chemistry.

SUBSTANCE: invention relates to dimethyl sulphide, which is used as an odorant and raw material for synthesis of various valuable thio compounds, particularly dimethyl sulphoxide, which is an extracting agent, solvent and medicine. Described is a catalyst for obtaining dimethyl sulphide through conversion of dimethyl disulphide, which is 10.0-18.5 wt % cobalt sulphide, deposited on aluminium oxide. Description is given of a method of preparing a catalyst by saturating aluminium oxide with a solution of cobaltous acetate with subsequent drying, baking in air and treatment of the catalyst with a mixture of hydrogen sulphide and hydrogen at T=390-410°C, and with hydrogen at T=200-330°C. A method is described for obtaining dimethyl sulphide through conversion of dimethyl disulphide in the presence of a catalyst with the above described content. The process is carried out at feed rate of 50-250 mmol dimethyl disulphide per hour per 1 g of catalyst.

EFFECT: increased dimethyl sulphide output.

4 cl, 15 ex, 1 tbl