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Preparation method of catalyst carrier material containing molecular sieve and amorphous silica-alumina

A catalyst carrier 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 blocking molecular sieves, easy access to each other's channels, and agglomeration of amorphous silicon-alumina, so as to avoid agglomeration, The effect of enhancing binding force

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 amorphous silica-alumina

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Embodiment 1

[0030] 255 g of solid aluminum chloride was added to 1.5 liters of distilled water, while heating and stirring until dissolved, to obtain an aluminum chloride solution (a). Concentrated ammonia water is added with an appropriate amount of distilled water to be diluted into about 10wt% dilute ammonia water (b), 8g of octadecylamine is dissolved in 120ml of dehydrated alcohol, and 20g of modified Y-type molecular sieves Y-1 (SiO2) are added inside under agitation. 2 / Al 2 O 3 A molar ratio of 11.0, a unit cell constant of 24.42 Å, and a relative crystallinity of 95%), a solution (c) was formed. Take 10L water glass (industrial grade, modulus 3.0) and dilute it in 20L deionized water to prepare solution (d). Take a stainless steel reaction tank, add (a) to the tank and heat it to 65°C with stirring, open the valve of the container containing (b), and drop the system in the tank to pH=4.5 within 10 minutes. Add 250ml of solution (c) into the tank, continue to dropwise add (b), ...

Embodiment 2

[0032] 266 g of solid aluminum sulfate was added to 1.2 liters of distilled water, while heating and stirring until dissolved, to obtain an aluminum sulfate solution (a). The concentrated ammonia water is added with an appropriate amount of distilled water to be diluted into about 10wt% dilute ammonia water (b), 21g of hexadecylamine is dissolved in 200ml of absolute ethanol, and 104g of modified Y-type molecular sieves Y-1 (SiO2) are added. 2 / Al 2 O 3 The molar ratio is 11.0, the unit cell constant is 24.42?, and the relative crystallinity is 95%) by beating to form slurry (c). Take 10L water glass (industrial grade, modulus 3.0) and dilute it in 20L deionized water to prepare solution (d). Take a stainless steel reaction tank, add (a) to the tank and heat it to 65°C with stirring, open the valve of the container containing (b), and drop the system in the tank to pH=4.5 within 10 minutes, open the tank containing The valve of the container of (c), continue to drip (b), co...

Embodiment 3

[0034] 255 g of solid aluminum sulfate was added to 1.2 liters of distilled water, while heating and stirring until dissolved, to obtain an aluminum sulfate solution (a). The solid sodium metaaluminate is formulated into a concentration of 20g Al 2 O 3 / l sodium aluminate solution (b), 98g decylamine is dissolved in 2.5L absolute ethanol, to which 979g 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?, the relative crystallinity is 95%), and the slurry (c) is obtained. Take 10L water glass (industrial grade, modulus 3.0) and dilute it in 20L deionized water to prepare solution (d). Take a stainless steel reaction tank, put 2l of deionized water into it and heat it to 65°C with stirring, open the valves of the containers (a), (b) and (c) at the same time, control the pH of the system = 8.0, and control the pH of the system to be 8.0 within 45 minutes. (a) (c) and (d) are finished. Keep the temperature at 65°C, p...

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Abstract

The invention discloses a preparation method of a catalyst carrier material containing a molecular sieve and amorphous silica-alumina. The preparation method comprises the following steps of adding a mixture of a molecular sieve and an organic amine into amorphous silica-alumina in gelling, after gelling of the amorphous silica-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 silica-alumina on the surface of the molecular sieve, improves the binding strength of the molecular sieve and the silica-alumina, avoids agglomeration of the amorphous silica-alumina and the molecular sieve and channel blocking caused by the agglomeration, realizes mutual communication of channels of the silica-alumina and the molecular sieve, and fully develops synergism of the silica-alumina and the molecular sieve. The hydrothermal treatment is conducive to formation of regular mesoporouses in the amorphous silica-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 present invention involves a preparation method of molecular sieve and non-fixed silicon aluminum catalytic carrier carrier material, especially the preparation method for composite molecular sieves for hydrogenation catalysts-non-fixed silicon aluminum carrier materials. Background technique [0002] Hydrogenation and cracking technology is one of the important means of secondary processing of crude oil and light oil light quality, and it has been increasingly applied. [0003] The acid components in the catalyst are generally provided by the molecular sieve and / or non-fixed silica-aluminum aluminum (hereinafter referred to as non-fixed silicon aluminum) and non-fixed aluminum oxide contained in the catalyst.For molecular sieve, non-fixed silicon oxide-alumina and non-fixed aluminum oxide, its acidity order is decreasing in order, but the concentration of the hole distribution is increasing in order, which also determines that the three are in the cata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J29/08B01J29/70B01J29/18B01J29/60B01J29/85B01J35/10C10G47/20
Inventor 蒋广安张晔方向晨王继锋
Owner CHINA PETROLEUM & CHEM CORP
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