Mesoporous and microporous ZSM-5/alumina catalyst and preparation method and application thereof

A technology of ZSM-5 and catalyst, which is applied in catalytic cracking gasoline hydrogenation upgrading catalyst and its preparation, and in the field of catalyst and its preparation, which can solve the problems such as the increase of anti-knock index

Active Publication Date: 2021-07-09
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, Mobil developed NiZSM-5 / Al 2 o 3 The catalyst contains about 1.0m% Ni, and the ratio of molecular sieve to alumina is 65:35. The modification results show that NiZSM-5 / Al 2 o 3 When the catalyst directly treats FCC gasoline with a boiling range of 35°C-260°C, both RON and MON increase, the antiknock index increases by 1.3 units, and the liquid yield is 94.3%, showing a good octane number maintenance effect, but The desulfurization rate is only 55.3%, and the sulfur content in the product is still as high as 1700μg / g

Method used

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  • Mesoporous and microporous ZSM-5/alumina catalyst and preparation method and application thereof
  • Mesoporous and microporous ZSM-5/alumina catalyst and preparation method and application thereof
  • Mesoporous and microporous ZSM-5/alumina catalyst and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a mesoporous ZSM-5 / Al 2 o 3 Catalyst, its preparation method comprises the following steps.

[0062] Preparation of ZSM-5 Molecular Sieve Directing Agent

[0063] (1) Using tetrapropylammonium bromide as a template, weigh 35g of deionized water, 0.9g of sodium hydroxide and 0.5g of sodium metaaluminate, and stir in a water bath at 35°C until a uniform solution is formed;

[0064] (2) Take by weighing 4g tetrapropylammonium bromide and slowly join in the solution (1), and continue stirring in a water bath;

[0065] (3) Gradually add 20g of silica sol to the working solution (the addition speed is preferably medium), there is heat generation, and it must be stirred while adding until the system is uniform;

[0066] (4) 2.05g of gallium nitrate dissolved in 30g of water is slowly added to the material system, and kept stirring until the system is uniform;

[0067] (5) Transfer the material to a crystallization kettle, carry out crystallization ...

Embodiment 2

[0073] This embodiment provides a mesoporous ZSM-5 / Al 2 o 3 Catalyst, its preparation method comprises the following steps.

[0074] Preparation of ZSM-5 Molecular Sieve Directing Agent

[0075] (1) Using cetyltrimethylammonium bromide as a template, weigh 35g of deionized water, 0.9g of sodium hydroxide and 0.5g of sodium metaaluminate, and stir in a water bath at 35°C until a uniform solution is formed;

[0076] (2) Take 4g of cetyltrimethylammonium bromide and slowly add it to the solution (1), and continue stirring in a water bath;

[0077] (3) Gradually add 20g of silica sol to the working solution (the addition speed is preferably medium), there is heat generation, and it must be stirred while adding until the system is uniform;

[0078] (4) Dissolve 1.23g of gallium nitrate in 30g of water and slowly add to the material system, and keep stirring until the system is uniform;

[0079] (5) Transfer the material to a crystallization kettle, carry out crystallization at ...

Embodiment 3

[0085] This embodiment provides a mesoporous ZSM-5 / Al 2 o 3 Catalyst, its preparation method comprises the following steps.

[0086] Preparation of ZSM-5 Molecular Sieve Directing Agent

[0087] (1) Using cetyltrimethylammonium bromide as a template, weigh 35g of deionized water, 0.9g of sodium hydroxide and 0.5g of sodium metaaluminate, and stir in a water bath at 35°C until a uniform solution is formed;

[0088] (2) Take 4g of cetyltrimethylammonium bromide and slowly add it to the solution (1), and continue stirring in a water bath;

[0089] (3) Gradually add 20g of tetraethyl orthosilicate to the working solution (the addition speed is preferably medium), there is heat release, and it must be stirred while adding until the system is uniform;

[0090] (4) 2.05g of gallium nitrate dissolved in 30g of water is slowly added to the material system, and kept stirring until the system is uniform;

[0091] (5) Transfer the material to a crystallization kettle, carry out crysta...

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Abstract

The invention provides a mesoporous and microporous ZSM-5 / alumina catalyst and a preparation method and application thereof. The catalyst consists of active components, a carrier, an organic ligand and a modified component; the carrier is ZSM-5 / Al2O3; the active components are Ni and Mo; based on 100% of the total weight of the catalyst, the active component accounts for 9.8-25.4% of the total weight of the catalyst; the content of the modified component in terms of oxide is 1%-3%; and the molar ratio of the introduction amount of the organic ligand to the metal Ni is (0.5-5.0): 1. The invention also provides a preparation method of the catalyst. The catalyst can catalyze hydrofining of FCC gasoline, the gasoline yield is higher than 99%, the sulfur content is lower than 10 ppm, and the octane number loss of a research method is within 1 unit.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to a catalytic cracking gasoline hydrogenation upgrading catalyst and a preparation method thereof, belonging to the technical field of catalysts. Background technique [0002] Studies have found that motor vehicle exhaust is one of the main sources of haze weather, and sulfide in motor vehicle exhaust is one of the main pollutants. my country's gasoline composition is dominated by FCC gasoline components, accounting for about 70%, which is characterized by insufficient high-sulfur, high-olefin and high-octane components. Moreover, as the feedstock processed by FCC develops in the direction of heavy weight, the sulfur content and olefin content in FCC gasoline will further increase. Therefore, FCC gasoline desulfurization, olefin reduction, and octane maintenance have become the key issues to be solved in my country's clean gasoline production technology. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/48B01J21/04B01J37/02B01J37/08B01J37/10B01J35/10C10G45/12
CPCB01J29/48B01J21/04B01J37/0201B01J37/086B01J37/10B01J37/0009C10G45/12B01J2229/186C10G2300/202C10G2300/305C10G2400/02B01J35/635B01J35/633B01J35/615
Inventor 宋绍彤段爱军孙长宇郑鹏肖承坤梅金林
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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