Hydrogenation catalyst containing molecular sieves and amorphous silica-alumina

A technology of amorphous silica-alumina and hydrogenation catalysts, applied in molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the agglomeration of amorphous silica-alumina, reduction of catalyst specific surface area and pore volume, and easy access to each other. pore channels or blockage of molecular sieves, etc., to enhance the binding force and avoid agglomeration.

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 molecular sieve, the poor connectivity between the molecular sieve and the amorphous silica-alumina channel, reduces the specific surface area and pore volume of the catalyst, and the distribution of active metals is not easy to control, which makes the hydrogenation function of the catalyst mismatch with the cracking function, affecting the catalyst performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 218g of solid aluminum chloride, 11g of sodium tungstate, and 9g of nickel nitrate into 1 liter of distilled water while heating and stirring until dissolved to obtain solution (a). Dilute the concentrated ammonia water with an appropriate amount of distilled water to form about 10wt% dilute ammonia water (b), and dissolve 33.4 g of xylitol in 500 ml 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 7.2g of diethanolamine in 100ml of water, heat to 60°C, add 18.5g of Y-type molecular sieve Y-1 (SiO 2 / Al 2 o 3 =11.0, unit cell constant is 24.42 Å, 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), open the...

Embodiment 2

[0043] Add 330g of solid aluminum sulfate, 74g of sodium tungstate, and 65g of nickel nitrate into 1 liter 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), and dissolve 98g of 1,4-butanediol 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 52.5g of ethanolamine in 100ml of water, heat to 60°C, add 260g of Y-type molecular sieve Y-1 (SiO 2 / Al 2 o 3 =11.0, unit cell constant is 24.42 Å, 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 ...

Embodiment 3

[0046] Add 211g of solid aluminum sulfate, 902g of sodium tungstate, and 795g of nickel nitrate into 1 liter 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). 151 g of 1,4-butanedioic acid was dissolved in 1 L of water to form solution (c). 179g of ethylenediamine was dissolved in 500ml of water, heated to 60°C, and 1783g of Y-type molecular sieve Y-1 (SiO 2 / Al 2 o 3 =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 hydrogenation catalyst containing molecular sieves and amorphous silica-alumina. The hydrogenation catalyst comprises hydrogenation active metal components, the molecular sieves and amorphous silica-alumina, wherein the hydrogenation active metal components are mainly loaded on amorphous silica-alumina; the molecular sieves are coated with amorphous silica-alumina; the hydrogenation active metal components account for 3-100% of amorphous silica-alumina by weight in terms of oxide; the weight ratio of the molecular sieves to amorphous silica-alumina is (1:19)-(19:1). The hydrogenation catalyst has the beneficial effects that the hydrogenation catalyst fully isolates the hydrogenation active metals from the acid centers of the molecular sieves, adjusts the hydrogenation and acid functions and has relatively high requirements for acidity and relatively low requirements for hydrogenation properties.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a hydrogenation catalyst containing molecular sieve and amorphous silicon aluminum and a preparation method thereof. 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 contain...

Claims

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Application Information

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IPC IPC(8): B01J29/076B01J29/16B01J29/78C10G47/20
Inventor 蒋广安李宝忠张晔郑庆华刘雪玲王继锋
Owner CHINA PETROLEUM & CHEM CORP
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