A kind of coal tar hydrogenation catalyst and its preparation method and application
A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of small catalyst particle size, achieve uniform dispersion, good Stability and the effect of improving overall performance
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Embodiment 1
[0039] Weigh 1000g of ferric oxyhydroxide filter cake prepared by wet air oxidation method, which contains 400g of ferric oxyhydroxide, add 80g of citric acid dissolved in 1L of water to it and stir to make it evenly mixed, the modification treatment time is 1h, and the treated slurry is use.
[0040] Preparation of sodium metaaluminate solution concentration is 50gAl 2 o 3 / L, a total of 1L, heated to 75°C for use, the concentration of aluminum sulfate solution is 20gAl 2 o 3 / L for a total of 2L, heated to 75°C for use.
[0041] Add 1.0L of distilled water into the gel tank and heat to 75°C. Weigh 500g macroporous alumina (specific surface area 220m 2 / g, pore volume 0.92mL / g, average pore diameter 17nm) and 100g Y-type molecular sieve (SiO 2 / Al 2 o 3 =11.5), add it into the gelling tank and stir evenly, and then add sodium metaaluminate solution and aluminum sulfate solution, the gelling temperature is kept at 75°C, and the pH value is kept at 7.5. After gelling, ...
Embodiment 2
[0044] Other conditions are with embodiment 1, just change citric acid addition into 140g, Y type molecular sieve (SiO 2 / Al 2 o 3 =11.5) was changed to 70g, the treatment time was 2h, the gelling temperature was 85°C, the pH value of gelling was 8.0, the aging temperature was 150°C, and the aging time was 6h, and the catalyst B-2 was prepared.
Embodiment 3
[0046] Other conditions are the same as in Example 1, but the preparation of sodium metaaluminate solution concentration is 60gAl 2 o 3 / L totals 2L, the concentration of aluminum sulfate solution is 20gAl 2 o 3 / L is 4L in total, the bottom water in the gel-forming tank is 3L, and 800g of alumina is added to prepare catalyst B-3.
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