Preparation method of hydrogenation catalyst composition containing molecular sieves and amorphous silica-alumina
A hydrogenation catalyst, amorphous silicon-alumina technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the agglomeration of amorphous silicon-alumina, the reduction of catalyst specific surface area and pore volume, and the influence of catalyst performance. and other problems to achieve the effect of enhancing the bonding force and improving the performance
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Embodiment 1
[0037] Add 129g of solid aluminum chloride, 86.5g of sodium tungstate, and 76.3g of nickel nitrate into 2 liters of distilled water while heating and stirring until dissolved to obtain solution (a). Add an appropriate amount of distilled water to the concentrated ammonia water and dilute it into about 10wt% dilute ammonia water (b), dissolve 4.3g of hexadecylamine in 200ml of absolute ethanol, add 11g of Y-type molecular sieve Y-1 (SiO 2 / Al 2 o 3 The molar ratio is 11.0, the unit cell constant is 24.42?, and the relative crystallinity is 95%) to form a solution (c). Take 10L of water glass (industrial grade, modulus 3.0) and dilute it in 20L of deionized water to prepare solution (d). Take a plastic tank, add (a) into the tank, stir and heat to 65°C, open the valve of the container containing (b), and add the system in the tank dropwise to pH=4.5 within 10 minutes. Add 250ml of solution (c) into the tank, continue to add (b) dropwise, and control the dropwise addition of t...
Embodiment 2
[0040] Add 129g of solid aluminum sulfate, 93g of sodium tungstate, and 82g of nickel nitrate into 2 liters of distilled water while heating and stirring until dissolved to obtain solution (a). Dilute the concentrated ammonia water into about 10wt% dilute ammonia water (b) by adding an appropriate amount of distilled water, dissolve 23g of hexadecylamine in 200ml of absolute ethanol, add 115.3g of Y-type molecular sieve Y-1 (SiO 2 / Al 2 o 3 The molar ratio is 11.0, the unit cell constant is 24.42 Å, and the relative crystallinity is 95%) beating to form a slurry (c). Take 10L of water glass (industrial grade, modulus 3.0) and dilute it in 20L of deionized water to prepare solution (d). Take a plastic tank, add (a) into the tank, stir and heat to 65°C, open the valve of the container containing (b), control the system in the tank to drop to pH=4.5 within 10 minutes, open the storage The valve of the container of (c), continue to drop (b), control the dropwise addition of the...
Embodiment 3
[0043] Add 129g of solid aluminum sulfate, 551g of sodium tungstate, and 486g of nickel nitrate into 2 liters of distilled water while heating and stirring until dissolved to obtain solution (a). Prepare the solid sodium metaaluminate to a concentration of 20g Al 2 o 3 / l sodium aluminate solution (b), 109g dodecylamine is dissolved in 2.5L dehydrated alcohol, adds 1090gY type molecular sieve Y-1 (SiO 2 / Al 2 o 3 The molar ratio is 11.0, the unit cell constant is 24.42 Å, and the relative crystallinity is 95%), and the slurry (c) is obtained. Take 10L of water glass (industrial grade, modulus 3.0) and dilute it in 20L of deionized water to prepare solution (d). Take a glue tank, put 2l of deionized water into it, stir and heat it to 65°C, open the valves of the containers (a), (b) and (c) at the same time, control the pH of the system to 8.0, and control the pH of the system within 45 minutes (a) (c) and (d) drop off. Keep the temperature at 65°C, pH=8.0, and after stayi...
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