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

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the carrier material is prepared by directly adding molecular sieves in the process of forming amorphous silica-alumina. In this way, amorphous silica-alumina is prone to agglomeration, and it is also easy to enter the pores of the other party or block the pores of molecular sieves, which affects the amorphous silica-alumina. The distribution on the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a preparation method of a hydrogenation catalyst composition containing molecular sieves and amorphous silica-alumina. The method comprises the following steps: adding a mixture of the molecular sieves and organic amines before or in the process of preparing an amorphous silica-alumina-hydrogenation active metal oxide composite oxide by a coprecipitation method; carrying out aging after gel forming is completed and then carrying out hydrothermal treatment, filtration, washing and drying; then forming, drying and roasting, thus obtaining the hydrogenation catalyst composition. A catalyst prepared by the method can organically combine the molecular sieves and amorphous silica-alumina together with good combination degree and dispersion degree, thereby avoiding agglomeration and even blockage of the molecular sieves and amorphous silica-alumina, simultaneously controlling the distribution of hydrogenation components on various acidic components effectively and improving the usability of the catalyst. The hydrogenation catalyst composition prepared by the method is especially suitable for hydrogenation catalysts with relatively high requirements for acidity and relatively low requirements for hydrogenation properties.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst composition, in particular to a method for preparing a hydrogenation catalyst composition containing molecular sieves and amorphous silicon-alumina. Background technique [0002] Hydrocracking technology is one of the important means for the secondary processing of crude oil and the lightening of heavy oil. Because of its strong adaptability to raw materials, flexible production operations and product solutions, and good product quality, it has become an important way to produce high-quality light clean oil products and solve the source of chemical raw materials. [0003] Hydrocracking catalysts are generally dual-functional catalysts, and their cracking activity and hydrogenation activity are respectively provided by the acidic component and hydrogenation active component in the catalyst. [0004] The acidic component of the catalyst is generally provided by molecular sieves con...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J29/78C10G47/20
Inventor 蒋广安刘雪玲李宝忠张晔郑庆华王继锋
Owner CHINA PETROLEUM & CHEM CORP
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