A kind of thioether oxidation method
A technology of thioether oxidation and thioether, which is applied in chemical instruments and methods, organic chemistry, and the preparation of organic compounds, and can solve the problem that the utilization rate of oxidant and the selectivity of dimethyl sulfoxide need to be improved.
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Embodiment 1
[0034] Dimethyl sulfide, hydrogen peroxide (provided as 30% by weight hydrogen peroxide) as oxidizing agent, and methanol as solvent were mixed to form a liquid mixture which was fed from the bottom of the fixed bed reactor and flowed through Catalyst bed, the catalyst bed is filled with carbon nanomaterials (nanocarbon materials with a particle size of 3-10nm account for 40% by weight of the total amount of carbon nanomaterials, and carbon nanomaterials with a particle size of 10-20nm account for the total amount of carbon nanomaterials. 60% by weight of the amount).
[0035] Among them, the molar ratio of dimethyl sulfide to hydrogen peroxide is 1:1, the molar ratio of dimethyl sulfide to methanol is 1:5, and the weight hourly space velocity of dimethyl sulfide is 2.0h -1 , the reaction temperature is 30°C. During the reaction, water is used as the heat exchange medium to exchange heat with the catalyst bed to remove the heat of reaction. During the reaction, the pressure in...
Embodiment 2
[0042] Dimethyl sulfide, hydrogen peroxide (provided as 30% by weight hydrogen peroxide) as oxidizing agent, and methanol as solvent were mixed to form a liquid mixture which was fed from the bottom of the fixed bed reactor and flowed through Catalyst bed, the catalyst bed is filled with carbon nanomaterials (nanocarbon materials with a particle size of 3-10nm account for 20% by weight of the total amount of carbon nanomaterials, and carbon nanomaterials with a particle size of 10-20nm account for the total amount of carbon nanomaterials. 80% by weight of the amount).
[0043] Among them, the molar ratio of dimethyl sulfide to hydrogen peroxide is 1:0.5, the molar ratio of dimethyl sulfide to methanol is 1:8, and the weight hourly space velocity of dimethyl sulfide is 150h -1 , the reaction temperature is 50°C. During the reaction, water is used as the heat exchange medium to exchange heat with the catalyst bed to remove the heat of reaction. During the reaction, the pressure ...
Embodiment 3
[0046] Dimethyl sulfide, hydrogen peroxide (provided in the form of 30% by weight of hydrogen peroxide) as an oxidant and methanol as a solvent and a catalyst nano-carbon material (a particle size of 3-10nm nano-carbon material accounts for the total amount of nano-carbon material 60% by weight of the amount, the nano-carbon material whose particle size is 10-20nm accounts for 40% by weight of the total amount of nano-carbon material) is mixed to form a liquid mixture, and the liquid mixture is sent from the bottom of the moving bed reactor and flows through the reactor , where the molar ratio of dimethyl sulfide to hydrogen peroxide is 1:2, the molar ratio of dimethyl sulfide to methanol is 1:10, and the weight hourly space velocity of dimethyl sulfide is 40h -1 , the reaction temperature is 40°C. During the reaction, water is used as the heat exchange medium to exchange heat with the reacted material to remove the heat of reaction. During the reaction, the pressure in the mov...
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