Production method of aromatic solvent oil and solvent oil selective hydrogenation catalyst
A technology for aromatic hydrocarbon solvent oil and hydrogenation catalyst, which can be applied to hydrocarbon oil treatment products, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., and can solve problems such as affecting the economics of hydrogenation industrial units. , to achieve the effect of active stability guarantee, increased specific surface area, excellent strength and hardness
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[0042] Preferably, the preparation method of the carrier includes: mixing alumina and fullerene, adding an extrusion aid, extruding into a strip, and then drying and calcining.
[0043] Further, the temperature of the drying treatment is 120-160°C.
[0044] Further, the temperature of the calcination treatment is 450-700° C., and the calcination time is 1-15 hours.
[0045] Preferably, the fullerene is used in an amount of 0.8-1.5 wt%, particularly preferably 1.0-1.5 wt%, of the total mass of the carrier.
[0046] Preferably, the fullerene solution is formed by dissolving fullerene in toluene.
[0047] In the catalyst of the present invention, before the fullerene in the carrier is mixed with alumina, it is first dissolved in toluene, the dissolution temperature used for the toluene dissolution is 20-40°C, the pressure is 0.10-0.25MPa, and the dissolution time 3-10 minutes; the mass ratio of toluene to fullerene used in the toluene dissolution is 200-350:1.
[0048] Further...
Embodiment 1
[0080] (1) Preparation of catalyst carrier:
[0081] a1. Dissolve 1.20 g of fullerene C60 powder with a purity of 99.5% in 400 g of toluene at a pressure of 0.25 MPa and 30° C. for 10 min to obtain a purple fullerene solution;
[0082] b1. Mix macroporous alumina (commercially available common macroporous alumina powder with a pore volume of 0.8 to 1.5ml / g) and small pore alumina (commercially available with a pore volume of 0.3 to 0.6ml / g) Ordinary small-pore alumina powder) is mixed and stirred according to the mass ratio of 1:1 as alumina raw material;
[0083] c1. Put the ultrasonic vibration introducing rod in the solution obtained in a1, the temperature is 30°C, and the ultrasonic power is 1000W;
[0084] d1. Take 99g of the alumina raw material mixed in step b1, add the fullerene solution in step c1, and mix thoroughly for 50 minutes, then add extrusion aids, such as citric acid, in an amount that satisfies the shape of the carrier, and then knead and roll Pressing and ...
Embodiment 2
[0093] (1) Preparation of catalyst carrier:
[0094] a1. Dissolve 1.40 g of fullerene C60 powder with a purity of 99.5% in 460 g of toluene at a pressure of 0.20 MPa and 40° C. for 3 minutes to obtain a purple fullerene solution;
[0095] b1, with embodiment 1;
[0096] c1. Put the ultrasonic vibration introducing rod in the solution obtained in a1, the temperature is 40°C, and the ultrasonic power is 500W;
[0097] d1. Take 99g of the alumina raw material mixed in step b1, add the fullerene solution in step c1, and mix thoroughly for 60 minutes, then add an extrusion aid, such as citric acid, in an amount that satisfies the shape of the carrier, then knead and roll Pressing and forming into strips;
[0098] e1 Dry the strip-shaped carrier extruded in step d1 at room temperature, then put it in an oven and bake it at 120°C for 4 hours, and then break it into about 2-3mm for later use;
[0099] fl. Put the dried bar in step e1 in a muffle furnace, and calcinate at 450° C. fo...
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