Method and reactor for catalytic oxidation of cumene by structured carbon nanotube catalyst
A technology of structured carbon and carbon nanotubes, applied in the field of catalysis, can solve the problems of difficult separation and low mass transfer efficiency, and achieve the effects of overcoming separation difficulties, high reaction efficiency, and saving man-hours
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Embodiment 1～5
[0034] The catalyst adopts carbon nanotube / foam Ni structured catalyst, the content of carbon nanotube on it is 5.5-6.7wt%, and the loading capacity of aluminum oxide is 5.6-6.9wt%. The Ni foam is a cylinder with a diameter of 45mm, a thickness of 10-30mm, and a porosity of 40ppi.
[0035] 160ml of cumene and 3ml of cumene hydroperoxide (initiator) are ultrasonically treated, and they are mixed and added to the rotating foam stirred paddle tank reactor of loading carbon nanotube / foam Ni structured catalyst 1 (such as figure 2 shown), then set the stirring rate to 500r / min, heat to 80°C, and then feed oxygen to a pressure of 0.4Mpa, and react for 8h. After the reaction is finished, the liquid mixture is separated and purified to obtain the product cumene hydroperoxide. The product was analyzed by gas chromatography and the conversion rate of cumene and the yield of cumene hydroperoxide (CHP) were calculated. Comparative examples 1, 2, 3, 4, 5 can find out that carbon nanotub...
Embodiment 6～13
[0039] The catalyst adopts a carbon nanotube / foam Ni structured catalyst, on which the carbon nanotube content is 5.6wt%, and the loading amount of alumina is 4.8wt%. The foamed Ni has a diameter of 45 mm, a thickness of 30 mm, and a porosity of 40 ppi.
[0040] 160ml of cumene and 3ml of cumene hydroperoxide (initiator) are ultrasonically treated and added to the rotating foam stirring paddle tank reactor loaded with carbon nanotube / foam Ni structured catalyst, and the carbon nanotube and isopropyl The mass ratio of benzene is 0.007:1, the stirring speed is set to a predetermined value (as shown in Table 2), after heating to 80°C, oxygen is introduced, the pressure is 0.4Mpa, and the reaction is 8h. After the reaction is finished, the liquid mixture is separated and purified to obtain the product cumene hydroperoxide. Get the product and carry out gas chromatographic analysis, and calculate the conversion rate of cumene and the yield of cumene hydroperoxide (CHP). From comp...
Embodiment 14～18
[0044] The catalyst adopts a carbon nanotube / foam Ni structured catalyst, on which the carbon nanotube content is 6.7wt%, and the loading amount of alumina is 6.9wt%. The foamed Ni has a diameter of 45 mm, a thickness of 30 mm, and a porosity of 40 ppi.
[0045] 160ml of cumene and 3ml of cumene hydroperoxide (initiator) were ultrasonically treated, and after being mixed evenly, they were added to the rotating foam stirred paddle tank reactor loaded with carbon nanotube / foam Ni structured catalyst, and the carbon nanotube and isopropyl benzene The mass ratio of propylbenzene is 0.01:1, the stirring speed is 400r / min, after heating to 80°C, oxygen is introduced, the pressure is 0.4Mpa, and the reaction time is shown in Table 3. After the reaction is finished, the liquid mixture is separated and purified to obtain the product cumene hydroperoxide. Get the product and carry out gas chromatographic analysis, and calculate the conversion rate of cumene and the yield of cumene hydr...
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