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A kind of preparation method of hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum

A hydrogenation catalyst and amorphous silicon-alumina technology, which is applied in the direction of molecular sieve catalysts, catalyst carriers, chemical instruments and methods, etc., can solve the problems of amorphous silicon-alumina agglomeration, blockage of molecular sieves, and easy entry into the pores of each other, so as to benefit Uniform distribution, improved performance, enhanced binding effect

Active Publication Date: 2014-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, amorphous silicon-alumina is prone to agglomeration, and it is also easy to enter the pores of the other party or block the orifice of the molecular sieve, which affects the distribution of amorphous silicon-alumina on the molecular sieve, and the connectivity between molecular sieve and amorphous silicon-alumina channels is poor. The specific surface area and pore volume of the catalyst are reduced, and the distribution of the active metal of the catalyst is uneven, which affects the performance of the catalyst

Method used

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  • A kind of preparation method of hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum

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Experimental program
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Effect test

Embodiment 1

[0036] Add 366g of solid aluminum chloride into 1.5 liters of distilled water while heating and stirring until dissolved to obtain aluminum chloride solution (a). Add an appropriate amount of distilled water to the concentrated ammonia water and dilute it into about 10% dilute ammonia water (b), and dissolve 70g of xylitol in 500ml of water 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). Dissolve 20.5g of diethanolamine in 100ml of water, heat to 60°C, add 52g of modified 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 for 2 hours to obtain slurry (e). Take a stainless steel reaction 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, and continue to drop (b), ...

Embodiment 2

[0039] 366g of solid aluminum sulfate was added to 1.5 liters of distilled water while heating and stirring until dissolved to obtain aluminum sulfate solution (a). Dilute the concentrated ammonia water into about 10% dilute ammonia water (b) by adding an appropriate amount of distilled water, and dissolve 55g of adipic acid in 500ml of water 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). Dissolve 21g of ethanolamine in 100ml of water, heat to 60°C, add 107g of modified Y-type molecular sieve Y-1 (SiO 2 / Al 2 o 3The molar ratio is 11.0, the unit cell constant is 24.42 Å, and the relative crystallinity is 95%) beating for 2 hours to obtain slurry (e). Take a stainless steel reaction tank, add (a) into the tank, stir and heat to 65°C, open the valve of the container containing (b), and control the system in the tank to drop to pH=4.5 within 10 minutes, at this time, add Add in t...

Embodiment 3

[0042] 366g of solid aluminum sulfate was added to 1.5 liters of distilled water while heating and stirring until dissolved to obtain aluminum sulfate solution (a). Prepare the solid sodium metaaluminate to a concentration of 20g Al 2 o 3 / l sodium aluminate solution (b). 109 g of 1,4-butanedioic acid was dissolved in 1 L of water to form solution (c). 119g of ethylenediamine was dissolved in 500ml of water, heated to 60°C, and 1189g of modified 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%), and the slurry (d) is obtained after stirring for 2 hours. Take 10L water glass (industrial grade, modulus 3.0) and dilute it in 20L deionized water to prepare solution (e). Take a steel reaction tank, put 2l of deionized water into it, stir and heat it to 65°C, open the valves of the containers containing (a), (b), (c) and (d) at the same time, and control the pH of the system to 8.0 , ...

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Abstract

The invention discloses a preparation method of a hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum. The method includes: preparing catalyst carrier material, introducing hydrogenation active components by impregnation method or co-precipitation method to obtain final hydrogenation catalyst, wherein the preparation process of carrier material is: adding molecular sieve and organic A mixture of amines, organic alcohols and / or organic acids, aged after the amorphous silica-alumina colloid is formed, then subjected to hydrothermal treatment, filtered, washed and dried to obtain a catalyst carrier material. The method of the present invention can arrange the silicon-alumina on the molecular sieve surface orderly and uniformly, and strengthen the bonding force between the molecular sieve and the silicon-aluminum, avoid the phenomenon of agglomeration or even blockage between the amorphous silicon-aluminum and the molecular sieve, and make the silicon The pores of the aluminum and the molecular sieve are connected to each other, so that the silica-alumina and the molecular sieve can fully play a synergistic effect and improve the performance of the catalyst. The catalyst prepared by the method of the invention can be used in various hydrogenation processes.

Description

Technical field [0001] The present invention involves a preparation method for hydrogenation catalysts, especially for preparation methods for hydrogenation catalysts containing molecular sieves and non -fixed silica aluminum. Background technique [0002] The rapid development of the world economy and the gradual deterioration of crude oil have increased the demand for light oil and chemical raw materials year by year.Hydrogenation and cracking technology is one of the important means of secondary processing of crude oil and light oil light quality. [0003] Key hydrogenation catalysts for hydrogenation technology.Hydrogenation catalyst is a dual -function catalyst. Its cracking activity and hydrogenation activity are provided by the acidic components and hydrogenation activity components in the catalyst.The acid components in the catalyst are generally provided by the molecular sieve and / or non -fixed silica aluminum contained in the catalyst.Molecular sieve has a strong acidit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16B01J29/78B01J32/00C10G47/20
Inventor 蒋广安张晔方向晨王继锋
Owner CHINA PETROLEUM & CHEM CORP
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