Metal modified Y-type molecular sieve and preparation method thereof

A metal modification and molecular sieve technology, which is applied in the directions of fajhedral crystalline aluminosilicate zeolite and crystalline aluminosilicate zeolite, etc., can solve the problems of loss of metal elements and limiting the application of metal modified Y-type molecular sieves.

Pending Publication Date: 2021-06-04
山西腾茂科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the above two reasons, there is often a serious loss of metal elements in the process of metal modified Y-type molecular sieves (Liu Pusheng. The effect of rare earths on the structure stability of Y-type molecular sieves and the performance of RFCC catalysts (D). Jilin University: 2019 ), which greatly limits the practical application of metal-modified Y-type molecular sieves

Method used

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  • Metal modified Y-type molecular sieve and preparation method thereof
  • Metal modified Y-type molecular sieve and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The method of the present invention prepares metal-modified Y-type molecular sieve samples

[0026] (1) Mix 100 grams of NaY molecular sieve (dry basis) with 400 grams of deionized water, make a slurry, raise the temperature to 90°C, adjust the pH of the resulting slurry system to ≈4.5 with dilute hydrochloric acid, and then add 0.5 grams of CTAB and 5.37 grams of hexahydrate in sequence Metal chloride (containing 2 g M 2 o 3 ), and continued stirring for 1 hour.

[0027] (2) Adjust the pH of the slurry system obtained in the above step (1) to ≈7 with ammonia solution, continue to stir and react for 5 minutes, then filter, wash, dry and perform water vapor ultra-stabilization treatment.

[0028] (3) The molecular sieve sample obtained in step (2) was mixed with ammonium chloride salt solution, beaten, and subjected to ammonium ion exchange, and then filtered, washed and dried to obtain the metal-modified Y-type molecular sieve sample C1.

Embodiment 2

[0030] The method of the present invention prepares metal-modified Y-type molecular sieve samples

[0031] (1) Mix 100 grams of NaY molecular sieve (dry basis) with 1000 grams of deionized water, make a slurry, raise the temperature to 60°C, adjust the pH of the resulting slurry system to ≈3 with dilute hydrochloric acid, then add 3 grams of CTAB and 21.49 grams of hexahydrate in sequence Metal chloride (containing 8 grams of M 2 o 3 ), and continued to stir for 4 hours.

[0032] (2) Adjust the pH of the slurry system obtained in the above step (1) to 6.5 with ammonia solution, continue to stir and react for 30 minutes, then filter, wash, dry and perform water vapor ultra-stabilization treatment.

[0033] (3) Mix the molecular sieve sample obtained in step (2) with the ammonium chloride salt solution, beat, perform ammonium ion exchange, and then filter, wash and dry to obtain the metal-modified Y-type molecular sieve sample C2.

Embodiment 3

[0035] The method of the present invention prepares metal-modified Y-type molecular sieve samples

[0036](1) Mix 100 grams of NaY molecular sieve (dry basis) with 600 grams of deionized water, make a slurry, heat up to 80°C, adjust the pH of the resulting slurry system to ≈4 with dilute hydrochloric acid, and then add 1 gram of CTAB and 10.75 grams of hexahydrate in sequence Metal chloride (containing 4 g M 2 o 3 ), and continued to stir for 2 hours.

[0037] (2) Adjust the pH of the slurry system obtained in the above step (1) to ≈8 with ammonia solution, continue to stir and react for 10 minutes, then filter, wash, dry and perform water vapor ultra-stabilization treatment.

[0038] (3) Mix the molecular sieve sample obtained in step (2) with the ammonium chloride salt solution, make a slurry, perform ammonium ion exchange, and then filter, wash and dry to obtain the metal-modified Y-type molecular sieve sample C3.

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Abstract

The invention relates to a metal modified Y-type molecular sieve and a preparation method thereof, and belongs to the field of molecular sieve preparation and modification. The preparation method comprises the following steps of 1, mixing a NaY molecular sieve and deionized water, conducting pulping, conducting heating to 50-95 DEG C, adjusting the pH value of an obtained slurry system to be approximately equal to 3-5 with diluted hydrochloric acid, then adding a solution polarity adjusting component and metal salt sequentially, and continuously conducting stirring for ion exchange for 1-4 hours; (2) adjusting the pH value of the slurry system obtained in the step (1) to be about 6-10, preferably 6.5-8, continuously conducting stirring and reacting for 5-30 minutes, then conducting filtering, washing, drying and water vapor ultra-stabilization treatment; and (3) mixing the molecular sieve sample obtained in the step (2) with an ammonium salt solution, conducting pulping, carrying out ammonium ion exchange, and then conducting filtering, washing and drying to obtain the metal modified Y-type molecular sieve.

Description

technical field [0001] The invention relates to a metal-modified Y-type zeolite molecular sieve and a preparation method thereof, in particular to a metal-modified Y-type zeolite molecular sieve with high cracking activity that can be used in catalytic cracking reactions and a preparation method thereof. Background technique [0002] Catalytic cracking (FCC) is the most important means of lightening heavy oil in the oil refining industry, and it is also the secondary processing process of crude oil with the largest amount of catalyst. With the heavy and inferior quality of crude oil and the increase in market demand for light oil products, refineries put forward higher requirements for the quality of catalytic cracking catalysts in order to improve the ability of heavy crude oil catalytic cracking deep processing. Y-type molecular sieve has suitable acidity, high specific surface area and good thermal stability, and is the main active component of industrial FCC catalysts. T...

Claims

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Application Information

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IPC IPC(8): C01B39/24
CPCC01B39/24
Inventor 王丽陈柯江
Owner 山西腾茂科技股份有限公司
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