Method for propylene preparation through butane disproportionation
A technology of butene and propylene, applied in the field of butene disproportionation to propylene, can solve the problem of low catalyst activity and achieve the effects of good reaction activity and good technical effect
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Embodiment 1
[0023] Weigh 500 grams of commercial MgO, add 2.5 liters of deionized water, heat and stir the resulting white turbid solution at 80°C for 5 hours, filter the water in the solution with suction, and dry the product at 120°C for 6 hours to obtain a magnesium oxide carrier.
[0024] Mix 200 grams of carrier magnesia and 1% scallop powder and put them into the blender evenly. After stirring for 12 minutes, add 19 grams of ammonium metatungstate, then add 250 grams of deionized water, knead, extrude, and dry at 550 The catalyst was prepared by calcining at ℃ for 4 hours, which was designated as SL-1.
[0025] The evaluation of the catalyst was carried out on an olefin disproportionation evaluation device, and the raw materials were 60% butene-1 and 40% 2-butene in terms of mass fraction. The reaction is at a temperature of 300°C, a pressure of 3MPa in absolute pressure, and a weight space velocity of butene of 4.8 hours -1 The evaluation was carried out under the conditions, and ...
Embodiment 2
[0028] Weigh 500 grams of commercial MgO, add 2 liters of deionized water, and heat and stir the obtained white turbid solution at 60°C for 4 hours, then let it stand for 2 hours, filter the water in the solution, and dry the product at 120°C for 4 hours to obtain the magnesium oxide carrier .
[0029] Mix 200 grams of carrier magnesia and 1% scallop powder and put them into the blender evenly. After stirring for 30 minutes, add 24 grams of ammonium metatungstate, then add 150 grams of deionized water, knead, extrude, and dry at 550 The catalyst was prepared by calcining at ℃ for 4 hours, which was designated as SL-2.
[0030] The evaluation of the catalyst is carried out on the olefin disproportionation evaluation device, the reaction is at a temperature of 350 ° C, a pressure of 2.5 MPa in absolute pressure, and a weight space velocity of butene of 6 hours -1 The evaluation was carried out under the conditions, and the evaluation results are shown in Table 1.
[0031]
Embodiment 3
[0033] Weigh 500 grams of commercial MgO, add 1.5 liters of deionized water, and heat and stir the obtained white turbid solution at 100°C for 2 hours, then let it stand for 2 hours, filter the water in the solution, and dry the product at 100°C for 8 hours to obtain a magnesium oxide carrier .
[0034] Mix 200 grams of carrier magnesia and 1% scallop powder and put them into the blender evenly. After stirring for 20 minutes, add 48 grams of ammonium metatungstate, then add 180 grams of deionized water, knead, extrude, and dry at 550 The catalyst was prepared by calcining at ℃ for 4 hours, which was designated as SL-3.
[0035] The evaluation of the catalyst was carried out on the olefin disproportionation evaluation device. The reaction was carried out at a temperature of 250°C, a pressure of 1 MPa in absolute pressure, and a weight space velocity of butene of 2 hours. -1 The evaluation was carried out under the conditions, and the evaluation results are shown in Table 1.
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