Sulfur-loaded hydrodesulfurization upgrading catalyst and preparation method
A hydrodesulfurization and catalyst technology, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low specific surface area of zinc oxide-containing materials and limited application of catalytic materials, and achieve good hydrogenation. Desulfurization and olefin reduction performance, reduction of hydrothermal treatment process, effect of large specific surface area
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Embodiment 1
[0034] Dissolve 2.4kg of zinc nitrate in 12L of water to make a solution containing zinc, and dissolve 0.32kg of sodium metaaluminate and 0.40kg of sodium carbonate in 5L of water to make a solution containing aluminum. Divide the zinc-containing solution into 4 equal parts, each 3L. Take 3L zinc-containing solution, control the system temperature to 75°C, add aluminum-containing solution dropwise to it until the pH value reaches 9.4; stop adding aluminum-containing solution dropwise, then add 3L zinc-containing solution dropwise to the mixing system, and continue to drop aluminum-containing solution Titrate until the pH value reaches 9.4; alternately titrate the aluminum-containing solution and the zinc-containing solution until all the zinc-containing solutions are added to the mixing system, and add the aluminum-containing solution dropwise until the pH reaches 9.4. The total titration time is 2 hours. The obtained mixture was aged at 75°C for 4 hours, cooled and washed unt...
Embodiment 2
[0041] Dissolve 1.9kg of zinc chloride in 20L of water to form a zinc-containing solution, and dissolve 0.40kg of sodium metaaluminate and 0.80kg of sodium carbonate in 8.5L of water to form an aluminum-containing solution. Take 8L of zinc-containing solution, control the system temperature at 65°C, add aluminum-containing solution dropwise to it until the pH value reaches 9.1; the remaining zinc-containing solution is divided into 3 equal parts, each 4L. The aluminum-containing solution and the zinc-containing solution are alternately titrated until all the zinc-containing solutions are added to the mixing system, and the aluminum-containing solution is added dropwise until the pH reaches 9.1. The total titration time is 6 hours. The obtained mixture was aged at 76°C for 8 hours, cooled and washed until neutral, and dried in an air atmosphere at 90°C for 10 hours to obtain a zinc-aluminum layered material 2 with the molecular formula Zn 0.67 Al 0.33 (OH) 2.03 (CO 3 ) 0.15...
Embodiment 3
[0048] Dissolve 800g of zinc nitrate in 4L of water to form a zinc-containing solution, and dissolve 120g of sodium metaaluminate and 120g of sodium carbonate in 1.7L of water to form an aluminum-containing solution. Take 2L zinc-containing solution, control the system temperature at 60°C, add aluminum-containing solution dropwise to it until the pH value reaches 9, stop adding the aluminum-containing solution dropwise, add the remaining 2L zinc-containing solution dropwise to the mixing system, and continue to drop the Aluminum solution until the pH value reaches 9, the total titration time is 4h. The obtained mixture was aged at 85°C for 4 hours, cooled and washed until neutral, and dried in an air atmosphere at 120°C for 5 hours to obtain a zinc-aluminum layered material 3 with the molecular formula Zn 0.59 Al 0.63 (OH) 2.44 (CO 3 ) 0.195 ·6H 2 O, the molar ratio of zinc to aluminum is 0.94, and the specific surface area is 260m 2 / g.
[0049] Take 50g of zinc-alumin...
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