Catalyst for producing alkenyl aromatic hydrocarbons
A technology for producing alkenyl aromatics and alkenyl aromatics, which is applied in the field of low rare earth catalysts and their preparation, and can solve the problems of poor stability of catalysts with low cerium content, etc.
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Embodiment 1
[0036] would be equivalent to 54.76 parts Fe 2 o 3 iron oxide red, equivalent to 18.25 parts of Fe 2 o 3 Iron oxide yellow, equivalent to 13.01 parts K 2 Potassium carbonate of O, equivalent to 6.82 parts of CeO 2 of cerium oxalate, equivalent to 1.96 parts of MoO 3 Ammonium molybdate, 2.46 parts of MnO 2 , 2.74 parts of MgO and 4.8 parts of methyl cellulose were stirred in a kneader for 1.5 hours, added deionized water accounting for 24.6% of the total weight of catalyst raw materials, stirred for 0.9 hours, took out the extruded strips, and extruded them into diameters of 3 mm and lengths of 5 mm. The particles were put into an oven, baked at 55°C for 2.5 hours, and baked at 110°C for 8.0 hours, and then placed in an atmosphere box furnace, adjusting the air flow rate for roasting to 80 ml / min, roasting at 350°C for 4 hours, and then at 820 The catalyst was calcined for 5 hours at °C to obtain the finished catalyst. The catalyst composition is listed in Table 1.
[00...
Embodiment 2
[0043] Except replacing MgO with CaO, catalyst preparation method and catalyst evaluation conditions are the same as embodiment 1, specifically:
[0044] would be equivalent to 54.76 parts Fe 2 o 3 iron oxide red, equivalent to 18.25 parts of Fe 2 o 3 Iron oxide yellow, equivalent to 13.01 parts K 2 Potassium carbonate of O, equivalent to 6.82 parts of CeO 2 of cerium oxalate, equivalent to 1.96 parts of MoO 3 Ammonium molybdate, 2.46 parts of MnO 2 , Calcium hydroxide equivalent to 2.74 parts of CaO and 4.8 parts of methyl cellulose were stirred in a kneader for 1.5 hours, added deionized water accounting for 24.6% of the total weight of the catalyst raw materials, stirred for 0.9 hours, took out the extrusion, and extruded into a diameter of 3 Millimeters and 5mm long particles, put them in an oven, bake at 55°C for 2.5 hours, and bake at 110°C for 8.0 hours, then place them in an atmosphere box furnace, adjust the air flow rate for roasting to 80 ml / min, and bake at 3...
Embodiment 3
[0047] Except replacing MgO with BaO, catalyst preparation method and catalyst evaluation conditions are the same as embodiment 1, specifically:
[0048] would be equivalent to 54.76 parts Fe 2 o 3 iron oxide red, equivalent to 18.25 parts of Fe 2 o 3 Iron oxide yellow, equivalent to 13.01 parts K 2 Potassium carbonate of O, equivalent to 6.82 parts of CeO 2 of cerium oxalate, equivalent to 1.96 parts of MoO 3 Ammonium molybdate, 2.46 parts of MnO 2 , barium carbonate equivalent to 2.74 parts of BaO and 4.8 parts of methyl cellulose were stirred in a kneader for 1.5 hours, added deionized water accounting for 24.6% of the total weight of the catalyst raw material, stirred for 0.9 hours, taken out and extruded, extruded into a diameter of 3 mm , 5 mm long particles, put them into an oven, bake at 55°C for 2.5 hours, and bake at 110°C for 8.0 hours, then place them in an atmosphere box furnace, adjust the air flow rate for roasting to 80 ml / min, and bake at 350°C for 4 hou...
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