Preparation method of catalyst for bio-oil hydrodeoxygenation
A hydrodeoxygenation and catalyst technology, which is used in the preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, chemical instruments and methods, etc., can solve the problems of easy aggregation and deactivation of catalyst active phases, poor hydrothermal stability, etc. Acid and active phase dispersibility, not easy to run off, improve the effect of sulfur fixation
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Embodiment 1
[0044] (1) Preparation of catalyst dry strips:
[0045] Take by weighing 1000 grams of dry rubber powder and 30 grams of safflower powder and mix them evenly, then add 900 milliliters of aqueous solution containing 28 g of nitric acid, and extrude them into cylindrical wet bars with an outer diameter of φ1.4 mm on a plunger extruder. Then the cylindrical wet strip was dried at 120°C for 4 hours, and then calcined at 600°C for 3 hours to obtain carrier Z with a pore volume of 0.7mL / g and a specific surface area of 280m 2 / g.
[0046] Add 100g of ammonium heptamolybdate, 30g of nickel nitrate and 1000g of ammonia water into 400mL of aqueous solution, heat and stir until completely dissolved to obtain 500mL of impregnation solution. Take 400g of the above-mentioned carrier Z, spray all the above-mentioned impregnating liquid evenly on the carrier Z, then put the obtained semi-dry catalyst into an oven and dry it at 120°C for 4 hours to obtain the dry catalyst strip G1 impregna...
Embodiment 2
[0055] (1) Preparation of dry catalyst strips: the same as in Example 1.
[0056] (2) Oxygenated organic matter treatment:
[0057]Place G1 in a ventilated vertical tube furnace, and roast at a constant temperature of 400°C for 3 hours. During the roasting process, the pre-configured aqueous solution with a phenol content of 7% by weight should be prepared according to the space velocity of 5h -1 , using a plunger pump to continuously push into the catalyst roasting bed layer, and finally obtain the catalyst C2 in the oxidation state. Wherein, relative to 100 parts by weight of dry catalyst strips, the mass of the aqueous solution introduced is 0.2 in total.
[0058] (3) Pretreatment before vulcanization
[0059] Phosphoric acid is selected as the VA oxygen-containing inorganic acid, and the total injection amount is 100g. Specifically, 100 g of phosphoric acid was mixed with 900 g of water to prepare a 10% by weight phosphoric acid aqueous solution. Under a nitrogen atmos...
Embodiment 3-7
[0064] The difference between embodiments 3 to 7 and embodiment 1 is that the metal active components are different, and the moles of the VIB group metal elements and the VIII group metal elements are all the same as those in the examples, and the compounds of the active components are respectively:
[0065] MoO 3 / CoCl 2 、WO 3 / CoCl 2 、WO 3 / Ni(NO 3 ) 2 、Cr 2 o 3 +MoO 3 (equal molar mixture of the two) / CoCl 2 、Cr 2 o 3 +MoO 3 (equal molar mixture of the two) / CoCl 2 +FeO.
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