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Preparation method of catalyst carrier material containing molecular sieve and alumina

A catalyst carrier, molecular sieve technology, applied in molecular sieve catalysts, catalyst carriers, physical/chemical process catalysts, etc., can solve the problems of clogging molecular sieves, easy access to each other's pores, and agglomeration of amorphous silicon and aluminum, so as to improve performance, enhance The effect of cohesion

Active Publication Date: 2013-05-15
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, which affects the performance of the catalyst

Method used

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  • Preparation method of catalyst carrier material containing molecular sieve and alumina

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Embodiment 1

[0032] Add 500 g of solid aluminum chloride into 3 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 10wt% dilute ammonia water (b), and dissolve 96g of hexanehexyl alcohol in 300ml of water to form a solution (c). Dissolve 8.4g of ethylenediamine in 100ml of water, heat to 60°C, stir for half an hour, add 21g of treated 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%), the stirring is continued for 2 hours, and the modified molecular sieve (d) which has pre-adsorbed the organic amine is obtained after filtration. Take a stainless steel reaction tank, add (a) into the tank, stir and heat to 60°C, open the valve of the container containing (b), and control the system in the tank to drop to pH=4.0 within 10 minute...

Embodiment 2

[0034] 300g of solid aluminum sulfate was added to 3 liters of distilled water while heating and stirring until dissolved to obtain aluminum sulfate 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 45g of pentapentyl alcohol in 1L of water to obtain a solution (c). Dissolve 18g of 1,4-butanediamine in 1L of water, heat to 60°C, stir for half an hour, add 89g 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 molecular sieve slurry (d) is obtained after stirring for 2 hours. Take a stainless steel reaction tank, add (a) into the tank, stir and heat to 60°C, open the valve of the container containing (b), control the system in the tank to drop to pH=4.0 within 10 minutes, open the storage The valves of the containers (c) and (d), continue to add (b) drop...

Embodiment 3

[0036] Add 300 g of solid aluminum sulfate into 3 L 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), 89g of 1,3-propanediol was dissolved in 300ml of water to form solution (c). 72g of diethanolamine was dissolved in 6L of water, heated to 60°C, and 715g 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%), the temperature is kept stirring for 2 hours, and the treated molecular sieve (d) is obtained by filtration. Take a stainless steel reaction tank, put 2l of deionized water into it, stir and heat to 60°C, then add (d), open the valve of the container containing (a), (b) and (c) at the same time, control the pH of the system to 8.0, Control the drops of (a) and (c) within 45 minutes and close the valve. Keep t...

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Abstract

The invention discloses a preparation method of a catalyst carrier material containing a molecular sieve and alumina. The preparation method comprises the following steps of adding a mixture of a molecular sieve and an organic amine, and an organic alcohol and / or an organic acid into amorphous alumina in gelling, after gelling of the amorphous alumina, carrying out aging, then carrying out hydrothermal treatment and then carrying out filtration, washing and drying to obtain the catalyst carrier material. The preparation method realizes ordered arrangement and uniform deposition of the alumina on the surface of the molecular sieve, improves the binding strength of the molecular sieve and the alumina, avoids agglomeration of the amorphous alumina and the molecular sieve and channel blocking caused by the agglomeration, realizes mutual communication of channels of the alumina and the molecular sieve, and fully develops synergism of the alumina and the molecular sieve. The hydrothermal treatment is conducive to formation of regular mesoporouses of the alumina so that catalyst use performances are improved. The catalyst carrier material can be used as an acidic component in a catalyst and is especially suitable for being used as a hydrocracking catalyst carrier.

Description

technical field [0001] The invention relates to a method for preparing a catalyst carrier material containing molecular sieve and alumina, in particular to a method for preparing a molecular sieve-alumina composite carrier material used for a hydrogenation catalyst. Background technique [0002] The rapid development of the world economy and the gradual heavy and inferior quality of crude oil make the market demand for light oil products and chemical raw materials increase year by year. Catalysts are also increasingly used in hydrocarbon processing. Through the deep processing of crude oil, processing heavy oil and residual oil, and maximizing the production of light fractions are important means to make full use of existing crude oil resources. The development of efficient petrochemical catalysts is also the core content of comprehensive utilization of existing crude oil resources. [0003] Catalysts in hydrocarbon processing technology generally use molecular sieves as t...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J35/10B01J29/08B01J29/40B01J29/70
Inventor 蒋广安张晔方向晨王继锋
Owner CHINA PETROLEUM & CHEM CORP
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