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Preparation method of EU-1/MOR (mordenite) co-crystallized molecular sieve

A symbiotic molecular sieve, EU-1 technology, applied in the direction of crystalline aluminosilicate zeolite, etc., can solve the problems of increasing cost, increasing operation steps, and polluting the environment

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

[0009] Judging from the currently published information, toxic and expensive organic templates are mostly used in the preparation process of symbiotic molecular sieves, and the use of templates cannot be avoided when preparing symbiotic molecular sieves containing EU-1 and MOR components.
As we all know, the proportion of organic template agent in the preparation cost of zeolite molecular sieve is the highest. The use of template agent also increases the operation steps of removing organic matter from molecular sieve, which not only increases the cost, but also pollutes the environment.
And operators will cause great harm to their health when they come into contact with organic templates

Method used

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  • Preparation method of EU-1/MOR (mordenite) co-crystallized molecular sieve
  • Preparation method of EU-1/MOR (mordenite) co-crystallized molecular sieve
  • Preparation method of EU-1/MOR (mordenite) co-crystallized molecular sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Take 11 g of sodium hydroxide and 8.2 g of sodium aluminate in 500 mL of distilled water, and stir vigorously until they are completely dissolved. Add 83 g of white carbon black slowly and stir vigorously for 30 min. Then 60 g of hexamethonium bromide was added. Then put it into a closed reactor and crystallize in an oven at 195°C for 72h. The obtained product was washed 4 times with distilled water until neutral, dried at 120°C for 12 hours, and then placed in a muffle furnace for 6 hours at 550°C. The obtained sample was a sodium type EU-1 molecular sieve with a silicon-aluminum molar ratio of 35.

[0033] Take 7 g of sodium hydroxide and 2.2 g of sodium aluminate in 500 mL of distilled water, and stir vigorously until they are completely dissolved. Add 33 g of white carbon black slowly and stir vigorously for 30 min. Then 3 g of EU-1 molecular sieve seeds were added and stirred vigorously for 30 min. Then it was aged at room temperature for 4 hours, and then put ...

Embodiment 2

[0035] Take 11 g of sodium hydroxide and 8.2 g of sodium aluminate in 500 mL of distilled water, and stir vigorously until they are completely dissolved. Add 83 g of white carbon black slowly and stir vigorously for 30 min. Then 60 g of hexamethonium bromide was added. Then put it into a closed reactor and crystallize in an oven at 195°C for 72h. The obtained product was washed 4 times with distilled water until neutral, dried at 120°C for 12 hours, and then placed in a muffle furnace for 6 hours at 550°C. The obtained sample was a sodium type EU-1 molecular sieve with a silicon-aluminum molar ratio of 35.

[0036] Take 7.5 g of sodium hydroxide and 1.8 g of sodium aluminate in 500 mL of distilled water, and stir vigorously until they are completely dissolved. Add 30 g of white carbon black slowly and stir vigorously for 30 min. Then 3.8 g of EU-1 molecular sieve seed crystals were added and stirred vigorously for 20 min. Then it was aged at room temperature for 5 hours, t...

Embodiment 3

[0038] Take 11 g of sodium hydroxide and 8.2 g of sodium aluminate in 500 mL of distilled water, and stir vigorously until they are completely dissolved. Add 83 g of white carbon black slowly and stir vigorously for 30 min. Then 60 g of hexamethonium bromide was added. Then put it into a closed reactor and crystallize in an oven at 195°C for 72h. The obtained product was washed 4 times with distilled water until neutral, dried at 120°C for 12 hours, and then placed in a muffle furnace for 6 hours at 550°C. The obtained sample was a sodium type EU-1 molecular sieve with a silicon-aluminum molar ratio of 35.

[0039] Take 6.5 g of sodium hydroxide and 2.0 g of sodium aluminate in 500 mL of distilled water, and stir vigorously until they are completely dissolved. Add 35 g of white carbon black slowly and stir vigorously for 40 min. Then 4 g of EU-1 molecular sieve seeds were added and stirred vigorously for 30 min. Then it was aged at room temperature for 7 hours, then put in...

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Abstract

The invention discloses a preparation method of an EU-1 / MOR (mordenite) co-crystallized molecular sieve. The method is as follows: according to the mol ratio of 9-13Na2O:40-65SiO2:A12O3:2200-4000H2O, mixing an inorganic alkali, a silicon source, an aluminum source and water to make an initial silicon aluminum gel, then adding EU-1 molecular sieve, wherein the mass ratio of the added EU-1 molecular sieve and the added silicon source by SiO2 is 0.05-0.20, after even mixing, crystallizing at 180-240 DEG C for 15-70h, then separating, washing and drying to obtain the EU-1 / MOR (mordenite) co-crystallized molecular sieve. According to the method, the EU-1 / MOR (mordenite) co-crystallized molecular sieve can be synthesized without use of an organic template agent, and raw materials for the synthesis are conventional inorganic materials, and do not contain toxic and harmful substances, so that the whole preparation process is green and environmental-friendly, and the operation process is simple and easy.

Description

technical field [0001] The invention relates to a preparation method of EU-1 / MOR symbiotic molecular sieve. Background technique [0002] Intergrowth molecular sieve is a kind of molecular sieve material with a composite structure of various compositions. Its pores and acid properties are the organic combination of the pores and acid properties of its constituent molecular sieves. It has better multi-level pores and reasonable acid distribution than individual molecular sieves. When complex reactants with different molecular diameters are used, they can exert a synergistic catalytic effect, so they show excellent catalytic performance. [0003] EU-1 molecular sieve is a medium-porous high-silicon molecular sieve with EUO topology, which contains a ten-membered ring channel along the [100] direction and a branch bag with a depth of 0.8nm in the [001] direction connected to it and a diameter of twelve-membered rings. . Mordenite (MOR) has two types of pore systems, one is th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/02
Inventor 范峰凌凤香王少军张会成陈晓刚杨春雁
Owner CHINA PETROLEUM & CHEM CORP
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