Catalyst and preparation method and application thereof, and hydrorefining method
A hydrofining and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems that the catalytic activity of catalysts needs to be further improved, and achieve The effect of improving the catalytic activity
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[0021] The invention provides a method for preparing a catalyst, the method comprising impregnating a shaped porous carrier with an aqueous solution, performing hydrothermal treatment on the impregnated mixture in a closed reactor, and drying the solid product obtained by the hydrothermal treatment. The porous support contains silica and alumina, and the aqueous solution contains at least one Group VIII metal-containing compound and at least one Group VIB metal-containing compound with or without a co-solvent.
[0022] The method according to the invention comprises impregnating the formed porous support with an aqueous solution containing at least one Group VIB metal-containing compound and at least one Group VIII metal-containing compound with or without co-solvent.
[0023] According to the method of the present invention, in the aqueous solution, the concentration of the compound containing the Group VIB metal and the compound containing the Group VIII metal is such that th...
Embodiment 1
[0069] 2000 grams of aluminum hydroxide powder (the dry rubber powder produced by Changling Refining and Chemical Company Catalyst Factory, dry basis 71% by weight) and 1039 grams of silica sol (Qingdao Ocean Chemical Plant product, silicon dioxide content is 30% by weight) are mixed uniformly . The resulting mixture was extruded into a butterfly-shaped strip with a circumcircle diameter of 1.4 mm using an extruder, and the extruded wet strip was dried at 120°C for 4 hours, and then roasted at 600°C for 3 hours to obtain carrier S1 and carrier S1 The content of silicon oxide in the middle is 18.0% by weight, and the content of aluminum oxide is 82.0% by weight.
[0070] 50 grams of ammonium molybdate (commercially purchased from Beijing Kangpu Huiwei Technology Co., Ltd.) was added to 120 milliliters of water, and under heating and stirring, dropwise added ammoniacal liquor with a concentration of 25% by weight until the ammonium molybdate was dissolved, and then added 30 gram...
Embodiment 2
[0072] Add 15 grams of basic cobalt carbonate and 30 grams of molybdenum trioxide into 120 milliliters of water, add 10 grams of phosphoric acid (85% by weight) with stirring, heat and stir to dissolve, then add water to make the volume to 200 milliliters. 100 g of support S1 was impregnated with the above aqueous solution for 0.2 hours by the excess impregnation method. Place the impregnated mixture in an autoclave, and add 15 milliliters of isopropanol to the autoclave for hydrothermal treatment. The conditions for hydrothermal treatment include: temperature is 200°C, time is 10 hours, pressure is 2.1MPa, Among them, P 0 =1.5MPa, ΔP=0.6MPa. The mixture obtained by the hydrothermal treatment was cooled to room temperature, and after filtration, the solid obtained was dried at 120° C. for 2 hours, followed by further drying at 250° C. for 3 hours, to obtain catalyst B-2 according to the invention. The composition of Catalyst B-2 is shown in Table 1.
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