Method for ion liquid abstraction-catalytic oxidation desulfurization
A catalytic oxidative desulfurization and ionic liquid technology, applied in the refining of oxygenated compounds, petroleum industry, refining hydrocarbon oil, etc., can solve the problem of low sulfur removal rate, and achieve high removal efficiency, mild reaction conditions, and simple separation. Effect
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[0042] Example 1 In a double-necked reaction flask with magnetic stirring, add 1 mL of ionic liquid [C 4 mim][BF 4 ] Add 0.00052mmol of catalyst: H 3 PW 12 O 40 And 1.56mmol 30% H 2 O 2 With 5mL simulated oil, the ionic liquid phase is in the lower layer, the oil phase is in the upper layer, the catalyst and H 2 O 2 Dissolved in ionic liquid; after magnetic stirring at 70°C for 1h, the simulated oil was separated, and the content of DBT in the oil was detected by GC-FID (internal standard method). The sulfur removal rate was calculated to be 75.6%.
Example Embodiment
[0043] Example 2 In a double-necked reaction flask with magnetic stirring, add 2 mL of ionic liquid [C 8 mim][PF 6 ] Add 0.00052mmol of catalyst: H 3 PMo 12 O 40 And 1.56mmol 30% H 2 O 2 With 5mL simulated oil, the ionic liquid phase is in the lower layer, the oil phase is in the upper layer, the catalyst and H 2 O 2 Dissolved in ionic liquid; after magnetic stirring at 70°C for 1 hour, the simulated oil was separated, and the content of DBT in the oil was detected by GC-FID (internal standard method). The sulfur removal rate was calculated to be 62.6%.
Example Embodiment
[0044] Example 3 In a double-necked reaction flask with magnetic stirring, add 2 mL of ionic liquid [C 4 mim][PF 6 ] Add 0.00052mmol of catalyst: H 3 SiMo 12 O 40 And 1.56mmol 30% H 2 O 2 With 5mL simulated oil, the ionic liquid phase is in the lower layer, the oil phase is in the upper layer, the catalyst and H 2 O 2 Dissolved in ionic liquid; after magnetic stirring at 60°C for 1 hour, the simulated oil was separated, and the content of DBT in the oil was detected by GC-FID (internal standard method), and the sulfur removal rate was calculated to be 68.6%.
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