Catalyst for preparing divinylbenzene and its preparation method and application
A divinylbenzene and catalyst technology, applied in the field of catalyst and its preparation, can solve the problems of high ratio of mono-diene and low catalyst activity, and achieve the effects of improving yield, improving dispersibility, and increasing the probability of macropore formation
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Embodiment 1
[0034] Combine 310.0 grams of iron oxide red with a grain size of 30 to 210 nanometers, and 163.3 grams of iron oxide yellow with a grain size of 35 to 220 nanometers, 70.4 grams of potassium carbonate, 87.1 grams of cerium oxalate, 10.3 grams of ammonium molybdate, and 4.5 Grams of magnesium oxide and 15.0 grams of carboxymethyl cellulose are stirred in a kneader for 1 hour. Add an appropriate amount of deionized water, then mix for another half an hour. Take out the extruded bar and squeeze it into granules with a diameter of 3 mm and a length of 5-10 mm. Put it in an oven, bake at 60°C for 2 hours, and bake at 100°C for 10 hours, then place in an atmosphere box furnace, adjust the air flow rate of the roasting to 50 ml / min, roast at 150°C for 8 hours, and then at 800°C Calcined for 20 hours to obtain the finished catalyst.
[0035] Load 100 ml of finished catalyst into the reactor, under normal pressure and liquid space velocity for 0.5 hours -1 The activity evaluation was ca...
Embodiment 2
[0037] Combine 255.5 grams of iron oxide red with a grain size of 40 to 250 nanometers and 100.3 grams of iron oxide yellow with a grain size of 35 to 300 nanometers, 65.5 grams of potassium carbonate, 22.9 grams of ammonium molybdate, 15.4 grams of magnesium oxide, and 11.9 Grams of calcium carbonate, 2.1 grams of polymethylstyrene microspheres and 16.6 grams of carboxymethyl cellulose were stirred in the kneader for 1 hour. 106.4 grams of cerium nitrate was dissolved in an appropriate amount of deionized water, and then added to the kneader. Mix for half an hour, take out the extruded bar, squeeze it into pellets with a diameter of 3 mm and a length of 5-10 mm, put them in an oven, bake at 70°C for 6 hours, and then place them in an atmosphere box furnace to adjust the air flow rate for roasting to 80 ml / Min, calcined at 300°C for 4 hours, and then calcined at 750°C for 10 hours to obtain the finished catalyst.
[0038] The activity evaluation was carried out according to the ...
Embodiment 3
[0040] Combine 215.2 grams of iron oxide red with a grain size of 25 to 200 nanometers and 92.1 grams of iron oxide yellow with a grain size of 30 to 220 nanometers, 71.0 grams of potassium carbonate, 73.3 grams of cerium oxalate, 16.5 grams of ammonium molybdate, and 5.1 Grams of calcium hydroxide, 9.6 grams of magnesium oxide, 5.1 grams of hydroxyethyl cellulose and 20.4 grams of carboxymethyl cellulose were stirred in a kneader for 1 hour. 22.2 grams of cerium nitrate was dissolved in an appropriate amount of deionized water, and then added to the kneading Mix in the machine for another half an hour, take out the extruded strips, squeeze them into pellets with a diameter of 3 mm and a length of 5-10 mm, put them in an oven, bake at 60°C for 2 hours, and at 100°C for 10 hours, then place in an atmosphere box furnace , Adjust the air flow rate of calcination to 100 ml / min, calcine at 350°C for 4 hours, and then calcine at 820°C for 5 hours to obtain the finished catalyst.
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