Coal tar hydrogenation catalyst and preparation method thereof
A hydrogenation catalyst and coal tar technology, which is applied in the direction of catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problem that the catalyst cannot be directly used as raw material of coal tar, and achieve easy vulcanization, high acidity, and improved utilization rate Effect
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Embodiment 1
[0074] (1) Preparation of silicon aluminum material
[0075] The preparation concentration is 80gAl 2 O 3 / L of aluminum sulfate solution and concentration of 50gSiO 2 Silica sol solution with / L and modulus of 2.8 is for use, and a dilute sulfuric acid solution with a concentration of 0.5 mol / L is prepared for use. Formulated with a caustic ratio of 1.15 and a concentration of 180 gAl 2 O 3 / L sodium metaaluminate solution for use.
[0076] Measure 1.0L concentration as 50gSiO 2 / L of silica sol solution was added to the container, and under stirring conditions, slowly add 0.8L of 80gAl 2 O 3 / L of aluminum sulfate solution, this process produces aluminum hydroxide colloid, but the solution still exists in liquid form. Then, a 1 mol / L dilute sulfuric acid solution was added to adjust the pH to 3.5, and the acidification treatment was completed to obtain a mixed solution A.
[0077] Add 1000 mL of deionized water to the 5000 mL reactor as bottom water, start stirring ...
Embodiment 2
[0083] Other conditions are the same as in Example 1, except that the silica sol is changed to water glass solution, the amount of water added at the bottom of the reactor is changed to 800ml, and the pH of the controlled reaction is changed to 8.5 to obtain a dry sample of silicon-alumina material PO-2. The silicon-alumina material P-2 was obtained by calcining at 600 °C for 5 h, and its properties are shown in Table 1.
[0084] Take 500 g of the prepared PO-2 silicon-alumina dry sample, add 5.14 g of corn starch, 9.85 g of acetic acid (85wt%) and 480 g of water, mix well, and then form a spherical shape. 0.7-1.2mm carrier Z2.
[0085] The carrier Z2 was saturated with the solution L1, and dried at 110 °C for 2 h. The catalyst C2 was obtained by calcining at 500 °C for 4 h at a volume ratio of nitrogen and water vapor of 2:1. The specific properties are shown in Table 2.
Embodiment 3
[0087] Other conditions are the same as in Example 1, except that the concentration of the silica sol solution is changed to 70SiO 2 / L, then add 1mol / L dilute sulfuric acid solution, adjust the pH to 4.0, change the mixture A to 25mL / min, the treatment temperature is 250℃, the treatment pressure is 0.4MPa, and the treatment is 4h to obtain a dry sample of silicon-alumina material PO-3, calcined at 600 ℃ for 5h to obtain the silicon-alumina material P-3, whose properties are shown in Table 1.
[0088] Take 500 g of the prepared PO-3 dry sample, add 6.15 g of methyl cellulose, 12.42 g of tartaric acid and 460 g of water, mix well, and then form a spherical shape. 1.2mm carrier Z3.
[0089] The carrier Z3 was saturated with the solution L1 solution, and dried at 110 °C for 2 h. The catalyst C3 was obtained by calcining at 480° C. for 3 h at a volume ratio of nitrogen and water vapor at 1:1. The specific properties are shown in Table 2.
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