Synthetic method of novel mesoporous-microporous NaY zeolite

A synthesis method and molecular sieve technology, applied in the direction of crystalline aluminosilicate zeolite, octahedral crystalline aluminosilicate zeolite, etc., can solve the problems of small molecules, inappropriate ratio of polymer to silicone modifier, etc., and achieve synthesis cost The effect of reducing, saving operation time, and mild synthesis conditions

Inactive Publication Date: 2012-11-14
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the molecular size of the silicone polymer they selected was small, or the ratio of the polym...

Method used

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  • Synthetic method of novel mesoporous-microporous NaY zeolite
  • Synthetic method of novel mesoporous-microporous NaY zeolite
  • Synthetic method of novel mesoporous-microporous NaY zeolite

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Example 1: Preparation of silane modifier MP-20000

[0038] Step 1: Dissolve 0.50g of 3-(2.3-glycidyloxypropoxy)propyltrimethoxysilane (GPMS) (2.12mmol) and 10.6g of polyethyleneimine (0.53mmol) in 8g of solvent and react at 100°C 24h.

[0039] Step 2: The resultant is evacuated with a rotary evaporator to remove ethanol, so as to obtain the silane modifier MP-20000.

Embodiment 2

[0040] Embodiment two: the preparation of meso-microporous NaY molecular sieve

[0041] Step 1: Weigh 72.13g of water glass and 15.83g of directing agent into a 250ml flask; weigh 6.00g of MP-20000 and dissolve in 4.25g of TMOAH; weigh 8.00g of NaOH and NaAlO 2 : 1.00g is put into the beaker, dissolves (lye) with 45ml deionized water; Weigh Al 2 (SO 4 ) 3 : Put 21.88g into a beaker and dissolve with 40ml deionized water;

[0042] Step 2: Add the mixture of MP-20000 and TMOAH into the flask, then add lye, adjust the pH value, and finally add Al dropwise 2 (SO 4 ) 3 ; when Al 2 (SO 4 ) 3 Halfway through the dropwise addition, increase the speed to make the gel react evenly; after the dropwise addition, keep stirring at 25°C for 1 hour;

[0043] Step 3: Stop stirring and crystallize in a kettle at 110°C for 24 hours;

[0044] Step 4: cooling, suction filtration, drying, and calcination to obtain mesoporous NaY molecular sieve

[0045] Step 5: Characterization: use XRD ...

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Abstract

The invention relates to a novel mesoporous-microporous NaY zeolite and a synthetic method thereof. The method comprises a step that the mesoporous-microporous NaY zeolite is obtained by in-situ synthesis through introducing a template which is a silane modified polymer in the Y zeolite synthesis process, and has the advantages of short synthetic period and easily controlled operation conditions. The novel mesoporous-microporous NaY zeolite has a good hydrothermal stability, and has wide application prospects in the fields of petroleum catalytic cracking, hydrocracking and the like.

Description

technical field [0001] The invention relates to a novel meso-microporous NaY molecular sieve material and a synthesis method, belonging to the technical field of molecular sieve materials. Background technique [0002] The availability of conventional petroleum resources is decreasing day by day, and the processing of heavy oil and residual oil is receiving more and more attention. Heavy oil is characterized by large molecules and complex molecular structures. Moreover, heavy oil is enriched with most of the sulfur, nitrogen and metal compounds in crude oil. These compounds are not only difficult to crack and easy to form coke, but also deposited on the surface of the catalyst are very easy to poison the catalyst and lose its activity. [0003] The above-mentioned characteristics of heavy oil put forward special requirements for catalytic cracking catalysts. As a typical microporous molecular sieve, Y-type molecular sieve is still the most popular in modern catalytic cracki...

Claims

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Application Information

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IPC IPC(8): C01B39/24
Inventor 徐春艳刘敬彩
Owner BEIJING UNIV OF CHEM TECH
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